1 2 Advanced Linux Sound Architecture - Driver 3 ========================================== 4 Configuration guide 5 6 7Kernel Configuration 8==================== 9 10To enable ALSA support you need at least to build the kernel with 11primary sound card support (CONFIG_SOUND). Since ALSA can emulate OSS, 12you don't have to choose any of the OSS modules. 13 14Enable "OSS API emulation" (CONFIG_SND_OSSEMUL) and both OSS mixer and 15PCM supports if you want to run OSS applications with ALSA. 16 17If you want to support the WaveTable functionality on cards such as 18SB Live! then you need to enable "Sequencer support" 19(CONFIG_SND_SEQUENCER). 20 21To make ALSA debug messages more verbose, enable the "Verbose printk" 22and "Debug" options. To check for memory leaks, turn on "Debug memory" 23too. "Debug detection" will add checks for the detection of cards. 24 25Please note that all the ALSA ISA drivers support the Linux isapnp API 26(if the card supports ISA PnP). You don't need to configure the cards 27using isapnptools. 28 29 30Creating ALSA devices 31===================== 32 33This depends on your distribution, but normally you use the /dev/MAKEDEV 34script to create the necessary device nodes. On some systems you use a 35script named 'snddevices'. 36 37 38Module parameters 39================= 40 41The user can load modules with options. If the module supports more than 42one card and you have more than one card of the same type then you can 43specify multiple values for the option separated by commas. 44 45Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed. 46 47 Module snd 48 ---------- 49 50 The core ALSA module. It is used by all ALSA card drivers. 51 It takes the following options which have global effects. 52 53 major - major number for sound driver 54 - Default: 116 55 cards_limit 56 - limiting card index for auto-loading (1-8) 57 - Default: 1 58 - For auto-loading more than one card, specify this 59 option together with snd-card-X aliases. 60 61 62 Module snd-pcm-oss 63 ------------------ 64 65 The PCM OSS emulation module. 66 This module takes options which change the mapping of devices. 67 68 dsp_map - PCM device number maps assigned to the 1st OSS device. 69 - Default: 0 70 adsp_map - PCM device number maps assigned to the 2st OSS device. 71 - Default: 1 72 nonblock_open 73 - Don't block opening busy PCM devices. Default: 1 74 75 For example, when dsp_map=2, /dev/dsp will be mapped to PCM #2 of 76 the card #0. Similarly, when adsp_map=0, /dev/adsp will be mapped 77 to PCM #0 of the card #0. 78 For changing the second or later card, specify the option with 79 commas, such like "dsp_map=0,1". 80 81 nonblock_open option is used to change the behavior of the PCM 82 regarding opening the device. When this option is non-zero, 83 opening a busy OSS PCM device won't be blocked but return 84 immediately with EAGAIN (just like O_NONBLOCK flag). 85 86 Module snd-rawmidi 87 ------------------ 88 89 This module takes options which change the mapping of devices. 90 similar to those of the snd-pcm-oss module. 91 92 midi_map - MIDI device number maps assigned to the 1st OSS device. 93 - Default: 0 94 amidi_map - MIDI device number maps assigned to the 2st OSS device. 95 - Default: 1 96 97 Common parameters for top sound card modules 98 -------------------------------------------- 99 100 Each of top level sound card module takes the following options. 101 102 index - index (slot #) of sound card 103 - Values: 0 through 31 or negative 104 - If nonnegative, assign that index number 105 - if negative, interpret as a bitmask of permissible 106 indices; the first free permitted index is assigned 107 - Default: -1 108 id - card ID (identifier or name) 109 - Can be up to 15 characters long 110 - Default: the card type 111 - A directory by this name is created under /proc/asound/ 112 containing information about the card 113 - This ID can be used instead of the index number in 114 identifying the card 115 enable - enable card 116 - Default: enabled, for PCI and ISA PnP cards 117 118 Module snd-adlib 119 ---------------- 120 121 Module for AdLib FM cards. 122 123 port - port # for OPL chip 124 125 This module supports multiple cards. It does not support autoprobe, so 126 the port must be specified. For actual AdLib FM cards it will be 0x388. 127 Note that this card does not have PCM support and no mixer; only FM 128 synthesis. 129 130 Make sure you have "sbiload" from the alsa-tools package available and, 131 after loading the module, find out the assigned ALSA sequencer port 132 number through "sbiload -l". Example output: 133 134 Port Client name Port name 135 64:0 OPL2 FM synth OPL2 FM Port 136 137 Load the std.sb and drums.sb patches also supplied by sbiload: 138 139 sbiload -p 64:0 std.sb drums.sb 140 141 If you use this driver to drive an OPL3, you can use std.o3 and drums.o3 142 instead. To have the card produce sound, use aplaymidi from alsa-utils: 143 144 aplaymidi -p 64:0 foo.mid 145 146 Module snd-ad1816a 147 ------------------ 148 149 Module for sound cards based on Analog Devices AD1816A/AD1815 ISA chips. 150 151 port - port # for AD1816A chip (PnP setup) 152 mpu_port - port # for MPU-401 UART (PnP setup) 153 fm_port - port # for OPL3 (PnP setup) 154 irq - IRQ # for AD1816A chip (PnP setup) 155 mpu_irq - IRQ # for MPU-401 UART (PnP setup) 156 dma1 - first DMA # for AD1816A chip (PnP setup) 157 dma2 - second DMA # for AD1816A chip (PnP setup) 158 clockfreq - Clock frequency for AD1816A chip (default = 0, 33000Hz) 159 160 This module supports multiple cards, autoprobe and PnP. 161 162 Module snd-ad1848 163 ----------------- 164 165 Module for sound cards based on AD1848/AD1847/CS4248 ISA chips. 166 167 port - port # for AD1848 chip 168 irq - IRQ # for AD1848 chip 169 dma1 - DMA # for AD1848 chip (0,1,3) 170 171 This module supports multiple cards. It does not support autoprobe 172 thus main port must be specified!!! Other ports are optional. 173 174 The power-management is supported. 175 176 Module snd-ad1889 177 ----------------- 178 179 Module for Analog Devices AD1889 chips. 180 181 ac97_quirk - AC'97 workaround for strange hardware 182 See the description of intel8x0 module for details. 183 184 This module supports multiple cards. 185 186 Module snd-ali5451 187 ------------------ 188 189 Module for ALi M5451 PCI chip. 190 191 pcm_channels - Number of hardware channels assigned for PCM 192 spdif - Support SPDIF I/O 193 - Default: disabled 194 195 This module supports one chip and autoprobe. 196 197 The power-management is supported. 198 199 Module snd-als100 200 ----------------- 201 202 Module for sound cards based on Avance Logic ALS100/ALS120 ISA chips. 203 204 port - port # for ALS100 (SB16) chip (PnP setup) 205 irq - IRQ # for ALS100 (SB16) chip (PnP setup) 206 dma8 - 8-bit DMA # for ALS100 (SB16) chip (PnP setup) 207 dma16 - 16-bit DMA # for ALS100 (SB16) chip (PnP setup) 208 mpu_port - port # for MPU-401 UART (PnP setup) 209 mpu_irq - IRQ # for MPU-401 (PnP setup) 210 fm_port - port # for OPL3 FM (PnP setup) 211 212 This module supports multiple cards, autoprobe and PnP. 213 214 The power-management is supported. 215 216 Module snd-als300 217 ----------------- 218 219 Module for Avance Logic ALS300 and ALS300+ 220 221 This module supports multiple cards. 222 223 The power-management is supported. 224 225 Module snd-als4000 226 ------------------ 227 228 Module for sound cards based on Avance Logic ALS4000 PCI chip. 229 230 joystick_port - port # for legacy joystick support. 231 0 = disabled (default), 1 = auto-detect 232 233 This module supports multiple cards, autoprobe and PnP. 234 235 The power-management is supported. 236 237 Module snd-atiixp 238 ----------------- 239 240 Module for ATI IXP 150/200/250/400 AC97 controllers. 241 242 ac97_clock - AC'97 clock (default = 48000) 243 ac97_quirk - AC'97 workaround for strange hardware 244 See "AC97 Quirk Option" section below. 245 ac97_codec - Workaround to specify which AC'97 codec 246 instead of probing. If this works for you 247 file a bug with your `lspci -vn` output. 248 -2 -- Force probing. 249 -1 -- Default behavior. 250 0-2 -- Use the specified codec. 251 spdif_aclink - S/PDIF transfer over AC-link (default = 1) 252 253 This module supports one card and autoprobe. 254 255 ATI IXP has two different methods to control SPDIF output. One is 256 over AC-link and another is over the "direct" SPDIF output. The 257 implementation depends on the motherboard, and you'll need to 258 choose the correct one via spdif_aclink module option. 259 260 The power-management is supported. 261 262 Module snd-atiixp-modem 263 ----------------------- 264 265 Module for ATI IXP 150/200/250 AC97 modem controllers. 266 267 This module supports one card and autoprobe. 268 269 Note: The default index value of this module is -2, i.e. the first 270 slot is excluded. 271 272 The power-management is supported. 273 274 Module snd-au8810, snd-au8820, snd-au8830 275 ----------------------------------------- 276 277 Module for Aureal Vortex, Vortex2 and Advantage device. 278 279 pcifix - Control PCI workarounds 280 0 = Disable all workarounds 281 1 = Force the PCI latency of the Aureal card to 0xff 282 2 = Force the Extend PCI#2 Internal Master for Efficient 283 Handling of Dummy Requests on the VIA KT133 AGP Bridge 284 3 = Force both settings 285 255 = Autodetect what is required (default) 286 287 This module supports all ADB PCM channels, ac97 mixer, SPDIF, hardware 288 EQ, mpu401, gameport. A3D and wavetable support are still in development. 289 Development and reverse engineering work is being coordinated at 290 http://savannah.nongnu.org/projects/openvortex/ 291 SPDIF output has a copy of the AC97 codec output, unless you use the 292 "spdif" pcm device, which allows raw data passthru. 293 The hardware EQ hardware and SPDIF is only present in the Vortex2 and 294 Advantage. 295 296 Note: Some ALSA mixer applications don't handle the SPDIF sample rate 297 control correctly. If you have problems regarding this, try 298 another ALSA compliant mixer (alsamixer works). 299 300 Module snd-azt2320 301 ------------------ 302 303 Module for sound cards based on Aztech System AZT2320 ISA chip (PnP only). 304 305 port - port # for AZT2320 chip (PnP setup) 306 wss_port - port # for WSS (PnP setup) 307 mpu_port - port # for MPU-401 UART (PnP setup) 308 fm_port - FM port # for AZT2320 chip (PnP setup) 309 irq - IRQ # for AZT2320 (WSS) chip (PnP setup) 310 mpu_irq - IRQ # for MPU-401 UART (PnP setup) 311 dma1 - 1st DMA # for AZT2320 (WSS) chip (PnP setup) 312 dma2 - 2nd DMA # for AZT2320 (WSS) chip (PnP setup) 313 314 This module supports multiple cards, PnP and autoprobe. 315 316 The power-management is supported. 317 318 Module snd-azt3328 319 ------------------ 320 321 Module for sound cards based on Aztech AZF3328 PCI chip. 322 323 joystick - Enable joystick (default off) 324 325 This module supports multiple cards. 326 327 Module snd-bt87x 328 ---------------- 329 330 Module for video cards based on Bt87x chips. 331 332 digital_rate - Override the default digital rate (Hz) 333 load_all - Load the driver even if the card model isn't known 334 335 This module supports multiple cards. 336 337 Note: The default index value of this module is -2, i.e. the first 338 slot is excluded. 339 340 Module snd-ca0106 341 ----------------- 342 343 Module for Creative Audigy LS and SB Live 24bit 344 345 This module supports multiple cards. 346 347 348 Module snd-cmi8330 349 ------------------ 350 351 Module for sound cards based on C-Media CMI8330 ISA chips. 352 353 wssport - port # for CMI8330 chip (WSS) 354 wssirq - IRQ # for CMI8330 chip (WSS) 355 wssdma - first DMA # for CMI8330 chip (WSS) 356 sbport - port # for CMI8330 chip (SB16) 357 sbirq - IRQ # for CMI8330 chip (SB16) 358 sbdma8 - 8bit DMA # for CMI8330 chip (SB16) 359 sbdma16 - 16bit DMA # for CMI8330 chip (SB16) 360 361 This module supports multiple cards and autoprobe. 362 363 The power-management is supported. 364 365 Module snd-cmipci 366 ----------------- 367 368 Module for C-Media CMI8338 and 8738 PCI sound cards. 369 370 mpu_port - 0x300,0x310,0x320,0x330 = legacy port, 371 1 = integrated PCI port, 372 0 = disable (default) 373 fm_port - 0x388 = legacy port, 374 1 = integrated PCI port (default), 375 0 = disable 376 soft_ac3 - Software-conversion of raw SPDIF packets (model 033 only) 377 (default = 1) 378 joystick_port - Joystick port address (0 = disable, 1 = auto-detect) 379 380 This module supports autoprobe and multiple cards. 381 382 The power-management is supported. 383 384 Module snd-cs4231 385 ----------------- 386 387 Module for sound cards based on CS4231 ISA chips. 388 389 port - port # for CS4231 chip 390 mpu_port - port # for MPU-401 UART (optional), -1 = disable 391 irq - IRQ # for CS4231 chip 392 mpu_irq - IRQ # for MPU-401 UART 393 dma1 - first DMA # for CS4231 chip 394 dma2 - second DMA # for CS4231 chip 395 396 This module supports multiple cards. This module does not support autoprobe 397 thus main port must be specified!!! Other ports are optional. 398 399 The power-management is supported. 400 401 Module snd-cs4232 402 ----------------- 403 404 Module for sound cards based on CS4232/CS4232A ISA chips. 405 406 port - port # for CS4232 chip (PnP setup - 0x534) 407 cport - control port # for CS4232 chip (PnP setup - 0x120,0x210,0xf00) 408 mpu_port - port # for MPU-401 UART (PnP setup - 0x300), -1 = disable 409 fm_port - FM port # for CS4232 chip (PnP setup - 0x388), -1 = disable 410 irq - IRQ # for CS4232 chip (5,7,9,11,12,15) 411 mpu_irq - IRQ # for MPU-401 UART (9,11,12,15) 412 dma1 - first DMA # for CS4232 chip (0,1,3) 413 dma2 - second DMA # for Yamaha CS4232 chip (0,1,3), -1 = disable 414 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default) 415 416 This module supports multiple cards. This module does not support autoprobe 417 thus main port must be specified!!! Other ports are optional. 418 419 The power-management is supported. 420 421 Module snd-cs4236 422 ----------------- 423 424 Module for sound cards based on CS4235/CS4236/CS4236B/CS4237B/ 425 CS4238B/CS4239 ISA chips. 426 427 port - port # for CS4236 chip (PnP setup - 0x534) 428 cport - control port # for CS4236 chip (PnP setup - 0x120,0x210,0xf00) 429 mpu_port - port # for MPU-401 UART (PnP setup - 0x300), -1 = disable 430 fm_port - FM port # for CS4236 chip (PnP setup - 0x388), -1 = disable 431 irq - IRQ # for CS4236 chip (5,7,9,11,12,15) 432 mpu_irq - IRQ # for MPU-401 UART (9,11,12,15) 433 dma1 - first DMA # for CS4236 chip (0,1,3) 434 dma2 - second DMA # for CS4236 chip (0,1,3), -1 = disable 435 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default) 436 437 This module supports multiple cards. This module does not support autoprobe 438 (if ISA PnP is not used) thus main port and control port must be 439 specified!!! Other ports are optional. 440 441 The power-management is supported. 442 443 Module snd-cs4281 444 ----------------- 445 446 Module for Cirrus Logic CS4281 soundchip. 447 448 dual_codec - Secondary codec ID (0 = disable, default) 449 450 This module supports multiple cards. 451 452 The power-management is supported. 453 454 Module snd-cs46xx 455 ----------------- 456 457 Module for PCI sound cards based on CS4610/CS4612/CS4614/CS4615/CS4622/ 458 CS4624/CS4630/CS4280 PCI chips. 459 460 external_amp - Force to enable external amplifier. 461 thinkpad - Force to enable Thinkpad's CLKRUN control. 462 mmap_valid - Support OSS mmap mode (default = 0). 463 464 This module supports multiple cards and autoprobe. 465 Usually external amp and CLKRUN controls are detected automatically 466 from PCI sub vendor/device ids. If they don't work, give the options 467 above explicitly. 468 469 The power-management is supported. 470 471 Module snd-cs5535audio 472 ---------------------- 473 474 Module for multifunction CS5535 companion PCI device 475 476 The power-management is supported. 477 478 Module snd-darla20 479 ------------------ 480 481 Module for Echoaudio Darla20 482 483 This module supports multiple cards. 484 The driver requires the firmware loader support on kernel. 485 486 Module snd-darla24 487 ------------------ 488 489 Module for Echoaudio Darla24 490 491 This module supports multiple cards. 492 The driver requires the firmware loader support on kernel. 493 494 Module snd-dt019x 495 ----------------- 496 497 Module for Diamond Technologies DT-019X / Avance Logic ALS-007 (PnP 498 only) 499 500 port - Port # (PnP setup) 501 mpu_port - Port # for MPU-401 (PnP setup) 502 fm_port - Port # for FM OPL-3 (PnP setup) 503 irq - IRQ # (PnP setup) 504 mpu_irq - IRQ # for MPU-401 (PnP setup) 505 dma8 - DMA # (PnP setup) 506 507 This module supports multiple cards. This module is enabled only with 508 ISA PnP support. 509 510 The power-management is supported. 511 512 Module snd-dummy 513 ---------------- 514 515 Module for the dummy sound card. This "card" doesn't do any output 516 or input, but you may use this module for any application which 517 requires a sound card (like RealPlayer). 518 519 The power-management is supported. 520 521 Module snd-echo3g 522 ----------------- 523 524 Module for Echoaudio 3G cards (Gina3G/Layla3G) 525 526 This module supports multiple cards. 527 The driver requires the firmware loader support on kernel. 528 529 Module snd-emu10k1 530 ------------------ 531 532 Module for EMU10K1/EMU10k2 based PCI sound cards. 533 * Sound Blaster Live! 534 * Sound Blaster PCI 512 535 * Emu APS (partially supported) 536 * Sound Blaster Audigy 537 538 extin - bitmap of available external inputs for FX8010 (see bellow) 539 extout - bitmap of available external outputs for FX8010 (see bellow) 540 seq_ports - allocated sequencer ports (4 by default) 541 max_synth_voices - limit of voices used for wavetable (64 by default) 542 max_buffer_size - specifies the maximum size of wavetable/pcm buffers 543 given in MB unit. Default value is 128. 544 enable_ir - enable IR 545 546 This module supports multiple cards and autoprobe. 547 548 Input & Output configurations [extin/extout] 549 * Creative Card wo/Digital out [0x0003/0x1f03] 550 * Creative Card w/Digital out [0x0003/0x1f0f] 551 * Creative Card w/Digital CD in [0x000f/0x1f0f] 552 * Creative Card wo/Digital out + LiveDrive [0x3fc3/0x1fc3] 553 * Creative Card w/Digital out + LiveDrive [0x3fc3/0x1fcf] 554 * Creative Card w/Digital CD in + LiveDrive [0x3fcf/0x1fcf] 555 * Creative Card wo/Digital out + Digital I/O 2 [0x0fc3/0x1f0f] 556 * Creative Card w/Digital out + Digital I/O 2 [0x0fc3/0x1f0f] 557 * Creative Card w/Digital CD in + Digital I/O 2 [0x0fcf/0x1f0f] 558 * Creative Card 5.1/w Digital out + LiveDrive [0x3fc3/0x1fff] 559 * Creative Card 5.1 (c) 2003 [0x3fc3/0x7cff] 560 * Creative Card all ins and outs [0x3fff/0x7fff] 561 562 The power-management is supported. 563 564 Module snd-emu10k1x 565 ------------------- 566 567 Module for Creative Emu10k1X (SB Live Dell OEM version) 568 569 This module supports multiple cards. 570 571 Module snd-ens1370 572 ------------------ 573 574 Module for Ensoniq AudioPCI ES1370 PCI sound cards. 575 * SoundBlaster PCI 64 576 * SoundBlaster PCI 128 577 578 joystick - Enable joystick (default off) 579 580 This module supports multiple cards and autoprobe. 581 582 The power-management is supported. 583 584 Module snd-ens1371 585 ------------------ 586 587 Module for Ensoniq AudioPCI ES1371 PCI sound cards. 588 * SoundBlaster PCI 64 589 * SoundBlaster PCI 128 590 * SoundBlaster Vibra PCI 591 592 joystick_port - port # for joystick (0x200,0x208,0x210,0x218), 593 0 = disable (default), 1 = auto-detect 594 595 This module supports multiple cards and autoprobe. 596 597 The power-management is supported. 598 599 Module snd-es968 600 ---------------- 601 602 Module for sound cards based on ESS ES968 chip (PnP only). 603 604 port - port # for ES968 (SB8) chip (PnP setup) 605 irq - IRQ # for ES968 (SB8) chip (PnP setup) 606 dma1 - DMA # for ES968 (SB8) chip (PnP setup) 607 608 This module supports multiple cards, PnP and autoprobe. 609 610 The power-management is supported. 611 612 Module snd-es1688 613 ----------------- 614 615 Module for ESS AudioDrive ES-1688 and ES-688 sound cards. 616 617 port - port # for ES-1688 chip (0x220,0x240,0x260) 618 mpu_port - port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable (default) 619 irq - IRQ # for ES-1688 chip (5,7,9,10) 620 mpu_irq - IRQ # for MPU-401 port (5,7,9,10) 621 dma8 - DMA # for ES-1688 chip (0,1,3) 622 623 This module supports multiple cards and autoprobe (without MPU-401 port). 624 625 Module snd-es18xx 626 ----------------- 627 628 Module for ESS AudioDrive ES-18xx sound cards. 629 630 port - port # for ES-18xx chip (0x220,0x240,0x260) 631 mpu_port - port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable (default) 632 fm_port - port # for FM (optional, not used) 633 irq - IRQ # for ES-18xx chip (5,7,9,10) 634 dma1 - first DMA # for ES-18xx chip (0,1,3) 635 dma2 - first DMA # for ES-18xx chip (0,1,3) 636 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default) 637 638 This module supports multiple cards, ISA PnP and autoprobe (without MPU-401 639 port if native ISA PnP routines are not used). 640 When dma2 is equal with dma1, the driver works as half-duplex. 641 642 The power-management is supported. 643 644 Module snd-es1938 645 ----------------- 646 647 Module for sound cards based on ESS Solo-1 (ES1938,ES1946) chips. 648 649 This module supports multiple cards and autoprobe. 650 651 The power-management is supported. 652 653 Module snd-es1968 654 ----------------- 655 656 Module for sound cards based on ESS Maestro-1/2/2E (ES1968/ES1978) chips. 657 658 total_bufsize - total buffer size in kB (1-4096kB) 659 pcm_substreams_p - playback channels (1-8, default=2) 660 pcm_substreams_c - capture channels (1-8, default=0) 661 clock - clock (0 = auto-detection) 662 use_pm - support the power-management (0 = off, 1 = on, 663 2 = auto (default)) 664 enable_mpu - enable MPU401 (0 = off, 1 = on, 2 = auto (default)) 665 joystick - enable joystick (default off) 666 667 This module supports multiple cards and autoprobe. 668 669 The power-management is supported. 670 671 Module snd-fm801 672 ---------------- 673 674 Module for ForteMedia FM801 based PCI sound cards. 675 676 tea575x_tuner - Enable TEA575x tuner 677 - 1 = MediaForte 256-PCS 678 - 2 = MediaForte 256-PCPR 679 - 3 = MediaForte 64-PCR 680 - High 16-bits are video (radio) device number + 1 681 - example: 0x10002 (MediaForte 256-PCPR, device 1) 682 683 This module supports multiple cards and autoprobe. 684 685 The power-management is supported. 686 687 Module snd-gina20 688 ----------------- 689 690 Module for Echoaudio Gina20 691 692 This module supports multiple cards. 693 The driver requires the firmware loader support on kernel. 694 695 Module snd-gina24 696 ----------------- 697 698 Module for Echoaudio Gina24 699 700 This module supports multiple cards. 701 The driver requires the firmware loader support on kernel. 702 703 Module snd-gusclassic 704 --------------------- 705 706 Module for Gravis UltraSound Classic sound card. 707 708 port - port # for GF1 chip (0x220,0x230,0x240,0x250,0x260) 709 irq - IRQ # for GF1 chip (3,5,9,11,12,15) 710 dma1 - DMA # for GF1 chip (1,3,5,6,7) 711 dma2 - DMA # for GF1 chip (1,3,5,6,7,-1=disable) 712 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V) 713 voices - GF1 voices limit (14-32) 714 pcm_voices - reserved PCM voices 715 716 This module supports multiple cards and autoprobe. 717 718 Module snd-gusextreme 719 --------------------- 720 721 Module for Gravis UltraSound Extreme (Synergy ViperMax) sound card. 722 723 port - port # for ES-1688 chip (0x220,0x230,0x240,0x250,0x260) 724 gf1_port - port # for GF1 chip (0x210,0x220,0x230,0x240,0x250,0x260,0x270) 725 mpu_port - port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable 726 irq - IRQ # for ES-1688 chip (5,7,9,10) 727 gf1_irq - IRQ # for GF1 chip (3,5,9,11,12,15) 728 mpu_irq - IRQ # for MPU-401 port (5,7,9,10) 729 dma8 - DMA # for ES-1688 chip (0,1,3) 730 dma1 - DMA # for GF1 chip (1,3,5,6,7) 731 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V) 732 voices - GF1 voices limit (14-32) 733 pcm_voices - reserved PCM voices 734 735 This module supports multiple cards and autoprobe (without MPU-401 port). 736 737 Module snd-gusmax 738 ----------------- 739 740 Module for Gravis UltraSound MAX sound card. 741 742 port - port # for GF1 chip (0x220,0x230,0x240,0x250,0x260) 743 irq - IRQ # for GF1 chip (3,5,9,11,12,15) 744 dma1 - DMA # for GF1 chip (1,3,5,6,7) 745 dma2 - DMA # for GF1 chip (1,3,5,6,7,-1=disable) 746 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V) 747 voices - GF1 voices limit (14-32) 748 pcm_voices - reserved PCM voices 749 750 This module supports multiple cards and autoprobe. 751 752 Module snd-hda-intel 753 -------------------- 754 755 Module for Intel HD Audio (ICH6, ICH6M, ESB2, ICH7, ICH8), 756 ATI SB450, SB600, RS600, 757 VIA VT8251/VT8237A, 758 SIS966, ULI M5461 759 760 model - force the model name 761 position_fix - Fix DMA pointer (0 = auto, 1 = none, 2 = POSBUF, 3 = FIFO size) 762 single_cmd - Use single immediate commands to communicate with 763 codecs (for debugging only) 764 enable_msi - Enable Message Signaled Interrupt (MSI) (default = off) 765 766 This module supports one card and autoprobe. 767 768 Each codec may have a model table for different configurations. 769 If your machine isn't listed there, the default (usually minimal) 770 configuration is set up. You can pass "model=<name>" option to 771 specify a certain model in such a case. There are different 772 models depending on the codec chip. 773 774 Model name Description 775 ---------- ----------- 776 ALC880 777 3stack 3-jack in back and a headphone out 778 3stack-digout 3-jack in back, a HP out and a SPDIF out 779 5stack 5-jack in back, 2-jack in front 780 5stack-digout 5-jack in back, 2-jack in front, a SPDIF out 781 6stack 6-jack in back, 2-jack in front 782 6stack-digout 6-jack with a SPDIF out 783 w810 3-jack 784 z71v 3-jack (HP shared SPDIF) 785 asus 3-jack (ASUS Mobo) 786 asus-w1v ASUS W1V 787 asus-dig ASUS with SPDIF out 788 asus-dig2 ASUS with SPDIF out (using GPIO2) 789 uniwill 3-jack 790 fujitsu Fujitsu Laptops (Pi1536) 791 F1734 2-jack 792 lg LG laptop (m1 express dual) 793 lg-lw LG LW20/LW25 laptop 794 tcl TCL S700 795 clevo Clevo laptops (m520G, m665n) 796 test for testing/debugging purpose, almost all controls can be 797 adjusted. Appearing only when compiled with 798 $CONFIG_SND_DEBUG=y 799 auto auto-config reading BIOS (default) 800 801 ALC260 802 hp HP machines 803 hp-3013 HP machines (3013-variant) 804 fujitsu Fujitsu S7020 805 acer Acer TravelMate 806 basic fixed pin assignment (old default model) 807 auto auto-config reading BIOS (default) 808 809 ALC262 810 fujitsu Fujitsu Laptop 811 hp-bpc HP xw4400/6400/8400/9400 laptops 812 hp-bpc-d7000 HP BPC D7000 813 benq Benq ED8 814 hippo Hippo (ATI) with jack detection, Sony UX-90s 815 hippo_1 Hippo (Benq) with jack detection 816 basic fixed pin assignment w/o SPDIF 817 auto auto-config reading BIOS (default) 818 819 ALC882/885 820 3stack-dig 3-jack with SPDIF I/O 821 6stack-dig 6-jack digital with SPDIF I/O 822 arima Arima W820Di1 823 macpro MacPro support 824 w2jc ASUS W2JC 825 auto auto-config reading BIOS (default) 826 827 ALC883/888 828 3stack-dig 3-jack with SPDIF I/O 829 6stack-dig 6-jack digital with SPDIF I/O 830 3stack-6ch 3-jack 6-channel 831 3stack-6ch-dig 3-jack 6-channel with SPDIF I/O 832 6stack-dig-demo 6-jack digital for Intel demo board 833 acer Acer laptops (Travelmate 3012WTMi, Aspire 5600, etc) 834 medion Medion Laptops 835 targa-dig Targa/MSI 836 targa-2ch-dig Targs/MSI with 2-channel 837 laptop-eapd 3-jack with SPDIF I/O and EAPD (Clevo M540JE, M550JE) 838 auto auto-config reading BIOS (default) 839 840 ALC861/660 841 3stack 3-jack 842 3stack-dig 3-jack with SPDIF I/O 843 6stack-dig 6-jack with SPDIF I/O 844 3stack-660 3-jack (for ALC660) 845 uniwill-m31 Uniwill M31 laptop 846 toshiba Toshiba laptop support 847 asus Asus laptop support 848 asus-laptop ASUS F2/F3 laptops 849 auto auto-config reading BIOS (default) 850 851 ALC861VD/660VD 852 3stack 3-jack 853 3stack-dig 3-jack with SPDIF OUT 854 6stack-dig 6-jack with SPDIF OUT 855 3stack-660 3-jack (for ALC660VD) 856 lenovo Lenovo 3000 C200 857 auto auto-config reading BIOS (default) 858 859 CMI9880 860 minimal 3-jack in back 861 min_fp 3-jack in back, 2-jack in front 862 full 6-jack in back, 2-jack in front 863 full_dig 6-jack in back, 2-jack in front, SPDIF I/O 864 allout 5-jack in back, 2-jack in front, SPDIF out 865 auto auto-config reading BIOS (default) 866 867 AD1981 868 basic 3-jack (default) 869 hp HP nx6320 870 thinkpad Lenovo Thinkpad T60/X60/Z60 871 toshiba Toshiba U205 872 873 AD1986A 874 6stack 6-jack, separate surrounds (default) 875 3stack 3-stack, shared surrounds 876 laptop 2-channel only (FSC V2060, Samsung M50) 877 laptop-eapd 2-channel with EAPD (Samsung R65, ASUS A6J) 878 ultra 2-channel with EAPD (Samsung Ultra tablet PC) 879 880 AD1988 881 6stack 6-jack 882 6stack-dig ditto with SPDIF 883 3stack 3-jack 884 3stack-dig ditto with SPDIF 885 laptop 3-jack with hp-jack automute 886 laptop-dig ditto with SPDIF 887 auto auto-config reading BIOS (default) 888 889 Conexant 5045 890 laptop Laptop config 891 test for testing/debugging purpose, almost all controls 892 can be adjusted. Appearing only when compiled with 893 $CONFIG_SND_DEBUG=y 894 895 Conexant 5047 896 laptop Basic Laptop config 897 laptop-hp Laptop config for some HP models (subdevice 30A5) 898 laptop-eapd Laptop config with EAPD support 899 test for testing/debugging purpose, almost all controls 900 can be adjusted. Appearing only when compiled with 901 $CONFIG_SND_DEBUG=y 902 903 STAC9200/9205/9254 904 ref Reference board 905 906 STAC9220/9221 907 ref Reference board 908 3stack D945 3stack 909 5stack D945 5stack + SPDIF 910 macmini Intel Mac Mini 911 macbook Intel Mac Book 912 macbook-pro-v1 Intel Mac Book Pro 1st generation 913 macbook-pro Intel Mac Book Pro 2nd generation 914 imac-intel Intel iMac 915 916 STAC9202/9250/9251 917 ref Reference board, base config 918 m2-2 Some Gateway MX series laptops 919 m6 Some Gateway NX series laptops 920 pa6 Gateway NX860 series 921 922 STAC9227/9228/9229/927x 923 ref Reference board 924 3stack D965 3stack 925 5stack D965 5stack + SPDIF 926 927 STAC9872 928 vaio Setup for VAIO FE550G/SZ110 929 vaio-ar Setup for VAIO AR 930 931 The model name "genric" is treated as a special case. When this 932 model is given, the driver uses the generic codec parser without 933 "codec-patch". It's sometimes good for testing and debugging. 934 935 If the default configuration doesn't work and one of the above 936 matches with your device, report it together with the PCI 937 subsystem ID (output of "lspci -nv") to ALSA BTS or alsa-devel 938 ML (see the section "Links and Addresses"). 939 940 Note 2: If you get click noises on output, try the module option 941 position_fix=1 or 2. position_fix=1 will use the SD_LPIB 942 register value without FIFO size correction as the current 943 DMA pointer. position_fix=2 will make the driver to use 944 the position buffer instead of reading SD_LPIB register. 945 (Usually SD_LPLIB register is more accurate than the 946 position buffer.) 947 948 NB: If you get many "azx_get_response timeout" messages at 949 loading, it's likely a problem of interrupts (e.g. ACPI irq 950 routing). Try to boot with options like "pci=noacpi". Also, you 951 can try "single_cmd=1" module option. This will switch the 952 communication method between HDA controller and codecs to the 953 single immediate commands instead of CORB/RIRB. Basically, the 954 single command mode is provided only for BIOS, and you won't get 955 unsolicited events, too. But, at least, this works independently 956 from the irq. Remember this is a last resort, and should be 957 avoided as much as possible... 958 959 The power-management is supported. 960 961 Module snd-hdsp 962 --------------- 963 964 Module for RME Hammerfall DSP audio interface(s) 965 966 This module supports multiple cards. 967 968 Note: The firmware data can be automatically loaded via hotplug 969 when CONFIG_FW_LOADER is set. Otherwise, you need to load 970 the firmware via hdsploader utility included in alsa-tools 971 package. 972 The firmware data is found in alsa-firmware package. 973 974 Note: snd-page-alloc module does the job which snd-hammerfall-mem 975 module did formerly. It will allocate the buffers in advance 976 when any HDSP cards are found. To make the buffer 977 allocation sure, load snd-page-alloc module in the early 978 stage of boot sequence. See "Early Buffer Allocation" 979 section. 980 981 Module snd-hdspm 982 ---------------- 983 984 Module for RME HDSP MADI board. 985 986 precise_ptr - Enable precise pointer, or disable. 987 line_outs_monitor - Send playback streams to analog outs by default. 988 enable_monitor - Enable Analog Out on Channel 63/64 by default. 989 990 See hdspm.txt for details. 991 992 Module snd-ice1712 993 ------------------ 994 995 Module for Envy24 (ICE1712) based PCI sound cards. 996 * MidiMan M Audio Delta 1010 997 * MidiMan M Audio Delta 1010LT 998 * MidiMan M Audio Delta DiO 2496 999 * MidiMan M Audio Delta 66 1000 * MidiMan M Audio Delta 44 1001 * MidiMan M Audio Delta 410 1002 * MidiMan M Audio Audiophile 2496 1003 * TerraTec EWS 88MT 1004 * TerraTec EWS 88D 1005 * TerraTec EWX 24/96 1006 * TerraTec DMX 6Fire 1007 * TerraTec Phase 88 1008 * Hoontech SoundTrack DSP 24 1009 * Hoontech SoundTrack DSP 24 Value 1010 * Hoontech SoundTrack DSP 24 Media 7.1 1011 * Event Electronics, EZ8 1012 * Digigram VX442 1013 * Lionstracs, Mediastaton 1014 1015 model - Use the given board model, one of the following: 1016 delta1010, dio2496, delta66, delta44, audiophile, delta410, 1017 delta1010lt, vx442, ewx2496, ews88mt, ews88mt_new, ews88d, 1018 dmx6fire, dsp24, dsp24_value, dsp24_71, ez8, 1019 phase88, mediastation 1020 omni - Omni I/O support for MidiMan M-Audio Delta44/66 1021 cs8427_timeout - reset timeout for the CS8427 chip (S/PDIF transceiver) 1022 in msec resolution, default value is 500 (0.5 sec) 1023 1024 This module supports multiple cards and autoprobe. Note: The consumer part 1025 is not used with all Envy24 based cards (for example in the MidiMan Delta 1026 serie). 1027 1028 Note: The supported board is detected by reading EEPROM or PCI 1029 SSID (if EEPROM isn't available). You can override the 1030 model by passing "model" module option in case that the 1031 driver isn't configured properly or you want to try another 1032 type for testing. 1033 1034 Module snd-ice1724 1035 ------------------ 1036 1037 Module for Envy24HT (VT/ICE1724), Envy24PT (VT1720) based PCI sound cards. 1038 * MidiMan M Audio Revolution 5.1 1039 * MidiMan M Audio Revolution 7.1 1040 * MidiMan M Audio Audiophile 192 1041 * AMP Ltd AUDIO2000 1042 * TerraTec Aureon 5.1 Sky 1043 * TerraTec Aureon 7.1 Space 1044 * TerraTec Aureon 7.1 Universe 1045 * TerraTec Phase 22 1046 * TerraTec Phase 28 1047 * AudioTrak Prodigy 7.1 1048 * AudioTrak Prodigy 7.1LT 1049 * AudioTrak Prodigy 192 1050 * Pontis MS300 1051 * Albatron K8X800 Pro II 1052 * Chaintech ZNF3-150 1053 * Chaintech ZNF3-250 1054 * Chaintech 9CJS 1055 * Chaintech AV-710 1056 * Shuttle SN25P 1057 1058 model - Use the given board model, one of the following: 1059 revo51, revo71, amp2000, prodigy71, prodigy71lt, 1060 prodigy192, aureon51, aureon71, universe, ap192, 1061 k8x800, phase22, phase28, ms300, av710 1062 1063 This module supports multiple cards and autoprobe. 1064 1065 Note: The supported board is detected by reading EEPROM or PCI 1066 SSID (if EEPROM isn't available). You can override the 1067 model by passing "model" module option in case that the 1068 driver isn't configured properly or you want to try another 1069 type for testing. 1070 1071 Module snd-indigo 1072 ----------------- 1073 1074 Module for Echoaudio Indigo 1075 1076 This module supports multiple cards. 1077 The driver requires the firmware loader support on kernel. 1078 1079 Module snd-indigodj 1080 ------------------- 1081 1082 Module for Echoaudio Indigo DJ 1083 1084 This module supports multiple cards. 1085 The driver requires the firmware loader support on kernel. 1086 1087 Module snd-indigoio 1088 ------------------- 1089 1090 Module for Echoaudio Indigo IO 1091 1092 This module supports multiple cards. 1093 The driver requires the firmware loader support on kernel. 1094 1095 Module snd-intel8x0 1096 ------------------- 1097 1098 Module for AC'97 motherboards from Intel and compatibles. 1099 * Intel i810/810E, i815, i820, i830, i84x, MX440 1100 ICH5, ICH6, ICH7, ESB2 1101 * SiS 7012 (SiS 735) 1102 * NVidia NForce, NForce2, NForce3, MCP04, CK804 1103 CK8, CK8S, MCP501 1104 * AMD AMD768, AMD8111 1105 * ALi m5455 1106 1107 ac97_clock - AC'97 codec clock base (0 = auto-detect) 1108 ac97_quirk - AC'97 workaround for strange hardware 1109 See "AC97 Quirk Option" section below. 1110 buggy_irq - Enable workaround for buggy interrupts on some 1111 motherboards (default yes on nForce chips, 1112 otherwise off) 1113 buggy_semaphore - Enable workaround for hardwares with buggy 1114 semaphores (e.g. on some ASUS laptops) 1115 (default off) 1116 spdif_aclink - Use S/PDIF over AC-link instead of direct connection 1117 from the controller chip 1118 (0 = off, 1 = on, -1 = default) 1119 1120 This module supports one chip and autoprobe. 1121 1122 Note: the latest driver supports auto-detection of chip clock. 1123 if you still encounter too fast playback, specify the clock 1124 explicitly via the module option "ac97_clock=41194". 1125 1126 Joystick/MIDI ports are not supported by this driver. If your 1127 motherboard has these devices, use the ns558 or snd-mpu401 1128 modules, respectively. 1129 1130 The power-management is supported. 1131 1132 Module snd-intel8x0m 1133 -------------------- 1134 1135 Module for Intel ICH (i8x0) chipset MC97 modems. 1136 * Intel i810/810E, i815, i820, i830, i84x, MX440 1137 ICH5, ICH6, ICH7 1138 * SiS 7013 (SiS 735) 1139 * NVidia NForce, NForce2, NForce2s, NForce3 1140 * AMD AMD8111 1141 * ALi m5455 1142 1143 ac97_clock - AC'97 codec clock base (0 = auto-detect) 1144 1145 This module supports one card and autoprobe. 1146 1147 Note: The default index value of this module is -2, i.e. the first 1148 slot is excluded. 1149 1150 The power-management is supported. 1151 1152 Module snd-interwave 1153 -------------------- 1154 1155 Module for Gravis UltraSound PnP, Dynasonic 3-D/Pro, STB Sound Rage 32 1156 and other sound cards based on AMD InterWave (tm) chip. 1157 1158 port - port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260) 1159 irq - IRQ # for InterWave chip (3,5,9,11,12,15) 1160 dma1 - DMA # for InterWave chip (0,1,3,5,6,7) 1161 dma2 - DMA # for InterWave chip (0,1,3,5,6,7,-1=disable) 1162 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V) 1163 midi - 1 = MIDI UART enable, 0 = MIDI UART disable (default) 1164 pcm_voices - reserved PCM voices for the synthesizer (default 2) 1165 effect - 1 = InterWave effects enable (default 0); 1166 requires 8 voices 1167 1168 This module supports multiple cards, autoprobe and ISA PnP. 1169 1170 Module snd-interwave-stb 1171 ------------------------ 1172 1173 Module for UltraSound 32-Pro (sound card from STB used by Compaq) 1174 and other sound cards based on AMD InterWave (tm) chip with TEA6330T 1175 circuit for extended control of bass, treble and master volume. 1176 1177 port - port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260) 1178 port_tc - tone control (i2c bus) port # for TEA6330T chip (0x350,0x360,0x370,0x380) 1179 irq - IRQ # for InterWave chip (3,5,9,11,12,15) 1180 dma1 - DMA # for InterWave chip (0,1,3,5,6,7) 1181 dma2 - DMA # for InterWave chip (0,1,3,5,6,7,-1=disable) 1182 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V) 1183 midi - 1 = MIDI UART enable, 0 = MIDI UART disable (default) 1184 pcm_voices - reserved PCM voices for the synthesizer (default 2) 1185 effect - 1 = InterWave effects enable (default 0); 1186 requires 8 voices 1187 1188 This module supports multiple cards, autoprobe and ISA PnP. 1189 1190 Module snd-korg1212 1191 ------------------- 1192 1193 Module for Korg 1212 IO PCI card 1194 1195 This module supports multiple cards. 1196 1197 Module snd-layla20 1198 ------------------ 1199 1200 Module for Echoaudio Layla20 1201 1202 This module supports multiple cards. 1203 The driver requires the firmware loader support on kernel. 1204 1205 Module snd-layla24 1206 ------------------ 1207 1208 Module for Echoaudio Layla24 1209 1210 This module supports multiple cards. 1211 The driver requires the firmware loader support on kernel. 1212 1213 Module snd-maestro3 1214 ------------------- 1215 1216 Module for Allegro/Maestro3 chips 1217 1218 external_amp - enable external amp (enabled by default) 1219 amp_gpio - GPIO pin number for external amp (0-15) or 1220 -1 for default pin (8 for allegro, 1 for 1221 others) 1222 1223 This module supports autoprobe and multiple chips. 1224 1225 Note: the binding of amplifier is dependent on hardware. 1226 If there is no sound even though all channels are unmuted, try to 1227 specify other gpio connection via amp_gpio option. 1228 For example, a Panasonic notebook might need "amp_gpio=0x0d" 1229 option. 1230 1231 The power-management is supported. 1232 1233 Module snd-mia 1234 --------------- 1235 1236 Module for Echoaudio Mia 1237 1238 This module supports multiple cards. 1239 The driver requires the firmware loader support on kernel. 1240 1241 Module snd-miro 1242 --------------- 1243 1244 Module for Miro soundcards: miroSOUND PCM 1 pro, 1245 miroSOUND PCM 12, 1246 miroSOUND PCM 20 Radio. 1247 1248 port - Port # (0x530,0x604,0xe80,0xf40) 1249 irq - IRQ # (5,7,9,10,11) 1250 dma1 - 1st dma # (0,1,3) 1251 dma2 - 2nd dma # (0,1) 1252 mpu_port - MPU-401 port # (0x300,0x310,0x320,0x330) 1253 mpu_irq - MPU-401 irq # (5,7,9,10) 1254 fm_port - FM Port # (0x388) 1255 wss - enable WSS mode 1256 ide - enable onboard ide support 1257 1258 Module snd-mixart 1259 ----------------- 1260 1261 Module for Digigram miXart8 sound cards. 1262 1263 This module supports multiple cards. 1264 Note: One miXart8 board will be represented as 4 alsa cards. 1265 See MIXART.txt for details. 1266 1267 When the driver is compiled as a module and the hotplug firmware 1268 is supported, the firmware data is loaded via hotplug automatically. 1269 Install the necessary firmware files in alsa-firmware package. 1270 When no hotplug fw loader is available, you need to load the 1271 firmware via mixartloader utility in alsa-tools package. 1272 1273 Module snd-mona 1274 --------------- 1275 1276 Module for Echoaudio Mona 1277 1278 This module supports multiple cards. 1279 The driver requires the firmware loader support on kernel. 1280 1281 Module snd-mpu401 1282 ----------------- 1283 1284 Module for MPU-401 UART devices. 1285 1286 port - port number or -1 (disable) 1287 irq - IRQ number or -1 (disable) 1288 pnp - PnP detection - 0 = disable, 1 = enable (default) 1289 uart_enter - Issue UART_ENTER command at open - bool, default = on 1290 1291 This module supports multiple devices and PnP. 1292 1293 Module snd-mtpav 1294 ---------------- 1295 1296 Module for MOTU MidiTimePiece AV multiport MIDI (on the parallel 1297 port). 1298 1299 port - I/O port # for MTPAV (0x378,0x278, default=0x378) 1300 irq - IRQ # for MTPAV (7,5, default=7) 1301 hwports - number of supported hardware ports, default=8. 1302 1303 Module supports only 1 card. This module has no enable option. 1304 1305 Module snd-mts64 1306 ---------------- 1307 1308 Module for Ego Systems (ESI) Miditerminal 4140 1309 1310 This module supports multiple devices. 1311 Requires parport (CONFIG_PARPORT). 1312 1313 Module snd-nm256 1314 ---------------- 1315 1316 Module for NeoMagic NM256AV/ZX chips 1317 1318 playback_bufsize - max playback frame size in kB (4-128kB) 1319 capture_bufsize - max capture frame size in kB (4-128kB) 1320 force_ac97 - 0 or 1 (disabled by default) 1321 buffer_top - specify buffer top address 1322 use_cache - 0 or 1 (disabled by default) 1323 vaio_hack - alias buffer_top=0x25a800 1324 reset_workaround - enable AC97 RESET workaround for some laptops 1325 reset_workaround2 - enable extended AC97 RESET workaround for some 1326 other laptops 1327 1328 This module supports one chip and autoprobe. 1329 1330 The power-management is supported. 1331 1332 Note: on some notebooks the buffer address cannot be detected 1333 automatically, or causes hang-up during initialization. 1334 In such a case, specify the buffer top address explicitly via 1335 the buffer_top option. 1336 For example, 1337 Sony F250: buffer_top=0x25a800 1338 Sony F270: buffer_top=0x272800 1339 The driver supports only ac97 codec. It's possible to force 1340 to initialize/use ac97 although it's not detected. In such a 1341 case, use force_ac97=1 option - but *NO* guarantee whether it 1342 works! 1343 1344 Note: The NM256 chip can be linked internally with non-AC97 1345 codecs. This driver supports only the AC97 codec, and won't work 1346 with machines with other (most likely CS423x or OPL3SAx) chips, 1347 even though the device is detected in lspci. In such a case, try 1348 other drivers, e.g. snd-cs4232 or snd-opl3sa2. Some has ISA-PnP 1349 but some doesn't have ISA PnP. You'll need to specify isapnp=0 1350 and proper hardware parameters in the case without ISA PnP. 1351 1352 Note: some laptops need a workaround for AC97 RESET. For the 1353 known hardware like Dell Latitude LS and Sony PCG-F305, this 1354 workaround is enabled automatically. For other laptops with a 1355 hard freeze, you can try reset_workaround=1 option. 1356 1357 Note: Dell Latitude CSx laptops have another problem regarding 1358 AC97 RESET. On these laptops, reset_workaround2 option is 1359 turned on as default. This option is worth to try if the 1360 previous reset_workaround option doesn't help. 1361 1362 Note: This driver is really crappy. It's a porting from the 1363 OSS driver, which is a result of black-magic reverse engineering. 1364 The detection of codec will fail if the driver is loaded *after* 1365 X-server as described above. You might be able to force to load 1366 the module, but it may result in hang-up. Hence, make sure that 1367 you load this module *before* X if you encounter this kind of 1368 problem. 1369 1370 Module snd-opl3sa2 1371 ------------------ 1372 1373 Module for Yamaha OPL3-SA2/SA3 sound cards. 1374 1375 port - control port # for OPL3-SA chip (0x370) 1376 sb_port - SB port # for OPL3-SA chip (0x220,0x240) 1377 wss_port - WSS port # for OPL3-SA chip (0x530,0xe80,0xf40,0x604) 1378 midi_port - port # for MPU-401 UART (0x300,0x330), -1 = disable 1379 fm_port - FM port # for OPL3-SA chip (0x388), -1 = disable 1380 irq - IRQ # for OPL3-SA chip (5,7,9,10) 1381 dma1 - first DMA # for Yamaha OPL3-SA chip (0,1,3) 1382 dma2 - second DMA # for Yamaha OPL3-SA chip (0,1,3), -1 = disable 1383 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default) 1384 1385 This module supports multiple cards and ISA PnP. It does not support 1386 autoprobe (if ISA PnP is not used) thus all ports must be specified!!! 1387 1388 The power-management is supported. 1389 1390 Module snd-opti92x-ad1848 1391 ------------------------- 1392 1393 Module for sound cards based on OPTi 82c92x and Analog Devices AD1848 chips. 1394 Module works with OAK Mozart cards as well. 1395 1396 port - port # for WSS chip (0x530,0xe80,0xf40,0x604) 1397 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330) 1398 fm_port - port # for OPL3 device (0x388) 1399 irq - IRQ # for WSS chip (5,7,9,10,11) 1400 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10) 1401 dma1 - first DMA # for WSS chip (0,1,3) 1402 1403 This module supports only one card, autoprobe and PnP. 1404 1405 Module snd-opti92x-cs4231 1406 ------------------------- 1407 1408 Module for sound cards based on OPTi 82c92x and Crystal CS4231 chips. 1409 1410 port - port # for WSS chip (0x530,0xe80,0xf40,0x604) 1411 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330) 1412 fm_port - port # for OPL3 device (0x388) 1413 irq - IRQ # for WSS chip (5,7,9,10,11) 1414 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10) 1415 dma1 - first DMA # for WSS chip (0,1,3) 1416 dma2 - second DMA # for WSS chip (0,1,3) 1417 1418 This module supports only one card, autoprobe and PnP. 1419 1420 Module snd-opti93x 1421 ------------------ 1422 1423 Module for sound cards based on OPTi 82c93x chips. 1424 1425 port - port # for WSS chip (0x530,0xe80,0xf40,0x604) 1426 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330) 1427 fm_port - port # for OPL3 device (0x388) 1428 irq - IRQ # for WSS chip (5,7,9,10,11) 1429 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10) 1430 dma1 - first DMA # for WSS chip (0,1,3) 1431 dma2 - second DMA # for WSS chip (0,1,3) 1432 1433 This module supports only one card, autoprobe and PnP. 1434 1435 Module snd-pcxhr 1436 ---------------- 1437 1438 Module for Digigram PCXHR boards 1439 1440 This module supports multiple cards. 1441 1442 Module snd-portman2x4 1443 --------------------- 1444 1445 Module for Midiman Portman 2x4 parallel port MIDI interface 1446 1447 This module supports multiple cards. 1448 1449 Module snd-powermac (on ppc only) 1450 --------------------------------- 1451 1452 Module for PowerMac, iMac and iBook on-board soundchips 1453 1454 enable_beep - enable beep using PCM (enabled as default) 1455 1456 Module supports autoprobe a chip. 1457 1458 Note: the driver may have problems regarding endianess. 1459 1460 The power-management is supported. 1461 1462 Module snd-pxa2xx-ac97 (on arm only) 1463 ------------------------------------ 1464 1465 Module for AC97 driver for the Intel PXA2xx chip 1466 1467 For ARM architecture only. 1468 1469 The power-management is supported. 1470 1471 Module snd-riptide 1472 ------------------ 1473 1474 Module for Conexant Riptide chip 1475 1476 joystick_port - Joystick port # (default: 0x200) 1477 mpu_port - MPU401 port # (default: 0x330) 1478 opl3_port - OPL3 port # (default: 0x388) 1479 1480 This module supports multiple cards. 1481 The driver requires the firmware loader support on kernel. 1482 You need to install the firmware file "riptide.hex" to the standard 1483 firmware path (e.g. /lib/firmware). 1484 1485 Module snd-rme32 1486 ---------------- 1487 1488 Module for RME Digi32, Digi32 Pro and Digi32/8 (Sek'd Prodif32, 1489 Prodif96 and Prodif Gold) sound cards. 1490 1491 This module supports multiple cards. 1492 1493 Module snd-rme96 1494 ---------------- 1495 1496 Module for RME Digi96, Digi96/8 and Digi96/8 PRO/PAD/PST sound cards. 1497 1498 This module supports multiple cards. 1499 1500 Module snd-rme9652 1501 ------------------ 1502 1503 Module for RME Digi9652 (Hammerfall, Hammerfall-Light) sound cards. 1504 1505 precise_ptr - Enable precise pointer (doesn't work reliably). 1506 (default = 0) 1507 1508 This module supports multiple cards. 1509 1510 Note: snd-page-alloc module does the job which snd-hammerfall-mem 1511 module did formerly. It will allocate the buffers in advance 1512 when any RME9652 cards are found. To make the buffer 1513 allocation sure, load snd-page-alloc module in the early 1514 stage of boot sequence. See "Early Buffer Allocation" 1515 section. 1516 1517 Module snd-sa11xx-uda1341 (on arm only) 1518 --------------------------------------- 1519 1520 Module for Philips UDA1341TS on Compaq iPAQ H3600 sound card. 1521 1522 Module supports only one card. 1523 Module has no enable and index options. 1524 1525 The power-management is supported. 1526 1527 Module snd-sb8 1528 -------------- 1529 1530 Module for 8-bit SoundBlaster cards: SoundBlaster 1.0, 1531 SoundBlaster 2.0, 1532 SoundBlaster Pro 1533 1534 port - port # for SB DSP chip (0x220,0x240,0x260) 1535 irq - IRQ # for SB DSP chip (5,7,9,10) 1536 dma8 - DMA # for SB DSP chip (1,3) 1537 1538 This module supports multiple cards and autoprobe. 1539 1540 The power-management is supported. 1541 1542 Module snd-sb16 and snd-sbawe 1543 ----------------------------- 1544 1545 Module for 16-bit SoundBlaster cards: SoundBlaster 16 (PnP), 1546 SoundBlaster AWE 32 (PnP), 1547 SoundBlaster AWE 64 PnP 1548 1549 port - port # for SB DSP 4.x chip (0x220,0x240,0x260) 1550 mpu_port - port # for MPU-401 UART (0x300,0x330), -1 = disable 1551 awe_port - base port # for EMU8000 synthesizer (0x620,0x640,0x660) 1552 (snd-sbawe module only) 1553 irq - IRQ # for SB DSP 4.x chip (5,7,9,10) 1554 dma8 - 8-bit DMA # for SB DSP 4.x chip (0,1,3) 1555 dma16 - 16-bit DMA # for SB DSP 4.x chip (5,6,7) 1556 mic_agc - Mic Auto-Gain-Control - 0 = disable, 1 = enable (default) 1557 csp - ASP/CSP chip support - 0 = disable (default), 1 = enable 1558 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default) 1559 1560 This module supports multiple cards, autoprobe and ISA PnP. 1561 1562 Note: To use Vibra16X cards in 16-bit half duplex mode, you must 1563 disable 16bit DMA with dma16 = -1 module parameter. 1564 Also, all Sound Blaster 16 type cards can operate in 16-bit 1565 half duplex mode through 8-bit DMA channel by disabling their 1566 16-bit DMA channel. 1567 1568 The power-management is supported. 1569 1570 Module snd-sgalaxy 1571 ------------------ 1572 1573 Module for Aztech Sound Galaxy sound card. 1574 1575 sbport - Port # for SB16 interface (0x220,0x240) 1576 wssport - Port # for WSS interface (0x530,0xe80,0xf40,0x604) 1577 irq - IRQ # (7,9,10,11) 1578 dma1 - DMA # 1579 1580 This module supports multiple cards. 1581 1582 The power-management is supported. 1583 1584 Module snd-sscape 1585 ----------------- 1586 1587 Module for ENSONIQ SoundScape PnP cards. 1588 1589 port - Port # (PnP setup) 1590 irq - IRQ # (PnP setup) 1591 mpu_irq - MPU-401 IRQ # (PnP setup) 1592 dma - DMA # (PnP setup) 1593 1594 This module supports multiple cards. ISA PnP must be enabled. 1595 You need sscape_ctl tool in alsa-tools package for loading 1596 the microcode. 1597 1598 Module snd-sun-amd7930 (on sparc only) 1599 -------------------------------------- 1600 1601 Module for AMD7930 sound chips found on Sparcs. 1602 1603 This module supports multiple cards. 1604 1605 Module snd-sun-cs4231 (on sparc only) 1606 ------------------------------------- 1607 1608 Module for CS4231 sound chips found on Sparcs. 1609 1610 This module supports multiple cards. 1611 1612 Module snd-sun-dbri (on sparc only) 1613 ----------------------------------- 1614 1615 Module for DBRI sound chips found on Sparcs. 1616 1617 This module supports multiple cards. 1618 1619 Module snd-wavefront 1620 -------------------- 1621 1622 Module for Turtle Beach Maui, Tropez and Tropez+ sound cards. 1623 1624 cs4232_pcm_port - Port # for CS4232 PCM interface. 1625 cs4232_pcm_irq - IRQ # for CS4232 PCM interface (5,7,9,11,12,15). 1626 cs4232_mpu_port - Port # for CS4232 MPU-401 interface. 1627 cs4232_mpu_irq - IRQ # for CS4232 MPU-401 interface (9,11,12,15). 1628 use_cs4232_midi - Use CS4232 MPU-401 interface 1629 (inaccessibly located inside your computer) 1630 ics2115_port - Port # for ICS2115 1631 ics2115_irq - IRQ # for ICS2115 1632 fm_port - FM OPL-3 Port # 1633 dma1 - DMA1 # for CS4232 PCM interface. 1634 dma2 - DMA2 # for CS4232 PCM interface. 1635 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default) 1636 1637 This module supports multiple cards and ISA PnP. 1638 1639 Module snd-sonicvibes 1640 --------------------- 1641 1642 Module for S3 SonicVibes PCI sound cards. 1643 * PINE Schubert 32 PCI 1644 1645 reverb - Reverb Enable - 1 = enable, 0 = disable (default) 1646 - SoundCard must have onboard SRAM for this. 1647 mge - Mic Gain Enable - 1 = enable, 0 = disable (default) 1648 1649 This module supports multiple cards and autoprobe. 1650 1651 Module snd-serial-u16550 1652 ------------------------ 1653 1654 Module for UART16550A serial MIDI ports. 1655 1656 port - port # for UART16550A chip 1657 irq - IRQ # for UART16550A chip, -1 = poll mode 1658 speed - speed in bauds (9600,19200,38400,57600,115200) 1659 38400 = default 1660 base - base for divisor in bauds (57600,115200,230400,460800) 1661 115200 = default 1662 outs - number of MIDI ports in a serial port (1-4) 1663 1 = default 1664 adaptor - Type of adaptor. 1665 0 = Soundcanvas, 1 = MS-124T, 2 = MS-124W S/A, 1666 3 = MS-124W M/B, 4 = Generic 1667 1668 This module supports multiple cards. This module does not support autoprobe 1669 thus the main port must be specified!!! Other options are optional. 1670 1671 Module snd-trident 1672 ------------------ 1673 1674 Module for Trident 4DWave DX/NX sound cards. 1675 * Best Union Miss Melody 4DWave PCI 1676 * HIS 4DWave PCI 1677 * Warpspeed ONSpeed 4DWave PCI 1678 * AzTech PCI 64-Q3D 1679 * Addonics SV 750 1680 * CHIC True Sound 4Dwave 1681 * Shark Predator4D-PCI 1682 * Jaton SonicWave 4D 1683 1684 pcm_channels - max channels (voices) reserved for PCM 1685 wavetable_size - max wavetable size in kB (4-?kb) 1686 1687 This module supports multiple cards and autoprobe. 1688 1689 The power-management is supported. 1690 1691 Module snd-usb-audio 1692 -------------------- 1693 1694 Module for USB audio and USB MIDI devices. 1695 1696 vid - Vendor ID for the device (optional) 1697 pid - Product ID for the device (optional) 1698 device_setup - Device specific magic number (optional) 1699 - Influence depends on the device 1700 - Default: 0x0000 1701 1702 This module supports multiple devices, autoprobe and hotplugging. 1703 1704 Module snd-usb-caiaq 1705 -------------------- 1706 1707 Module for caiaq UB audio interfaces, 1708 * Native Instruments RigKontrol2 1709 * Native Instruments Kore Controller 1710 * Native Instruments Audio Kontrol 1 1711 * Native Instruments Audio 8 DJ 1712 1713 This module supports multiple devices, autoprobe and hotplugging. 1714 1715 Module snd-usb-usx2y 1716 -------------------- 1717 1718 Module for Tascam USB US-122, US-224 and US-428 devices. 1719 1720 This module supports multiple devices, autoprobe and hotplugging. 1721 1722 Note: you need to load the firmware via usx2yloader utility included 1723 in alsa-tools and alsa-firmware packages. 1724 1725 Module snd-via82xx 1726 ------------------ 1727 1728 Module for AC'97 motherboards based on VIA 82C686A/686B, 8233, 1729 8233A, 8233C, 8235, 8237 (south) bridge. 1730 1731 mpu_port - 0x300,0x310,0x320,0x330, otherwise obtain BIOS setup 1732 [VIA686A/686B only] 1733 joystick - Enable joystick (default off) [VIA686A/686B only] 1734 ac97_clock - AC'97 codec clock base (default 48000Hz) 1735 dxs_support - support DXS channels, 1736 0 = auto (default), 1 = enable, 2 = disable, 1737 3 = 48k only, 4 = no VRA, 5 = enable any sample 1738 rate and different sample rates on different 1739 channels 1740 [VIA8233/C, 8235, 8237 only] 1741 ac97_quirk - AC'97 workaround for strange hardware 1742 See "AC97 Quirk Option" section below. 1743 1744 This module supports one chip and autoprobe. 1745 1746 Note: on some SMP motherboards like MSI 694D the interrupts might 1747 not be generated properly. In such a case, please try to 1748 set the SMP (or MPS) version on BIOS to 1.1 instead of 1749 default value 1.4. Then the interrupt number will be 1750 assigned under 15. You might also upgrade your BIOS. 1751 1752 Note: VIA8233/5/7 (not VIA8233A) can support DXS (direct sound) 1753 channels as the first PCM. On these channels, up to 4 1754 streams can be played at the same time, and the controller 1755 can perform sample rate conversion with separate rates for 1756 each channel. 1757 As default (dxs_support = 0), 48k fixed rate is chosen 1758 except for the known devices since the output is often 1759 noisy except for 48k on some mother boards due to the 1760 bug of BIOS. 1761 Please try once dxs_support=5 and if it works on other 1762 sample rates (e.g. 44.1kHz of mp3 playback), please let us 1763 know the PCI subsystem vendor/device id's (output of 1764 "lspci -nv"). 1765 If dxs_support=5 does not work, try dxs_support=4; if it 1766 doesn't work too, try dxs_support=1. (dxs_support=1 is 1767 usually for old motherboards. The correct implemented 1768 board should work with 4 or 5.) If it still doesn't 1769 work and the default setting is ok, dxs_support=3 is the 1770 right choice. If the default setting doesn't work at all, 1771 try dxs_support=2 to disable the DXS channels. 1772 In any cases, please let us know the result and the 1773 subsystem vendor/device ids. See "Links and Addresses" 1774 below. 1775 1776 Note: for the MPU401 on VIA823x, use snd-mpu401 driver 1777 additionally. The mpu_port option is for VIA686 chips only. 1778 1779 The power-management is supported. 1780 1781 Module snd-via82xx-modem 1782 ------------------------ 1783 1784 Module for VIA82xx AC97 modem 1785 1786 ac97_clock - AC'97 codec clock base (default 48000Hz) 1787 1788 This module supports one card and autoprobe. 1789 1790 Note: The default index value of this module is -2, i.e. the first 1791 slot is excluded. 1792 1793 The power-management is supported. 1794 1795 Module snd-virmidi 1796 ------------------ 1797 1798 Module for virtual rawmidi devices. 1799 This module creates virtual rawmidi devices which communicate 1800 to the corresponding ALSA sequencer ports. 1801 1802 midi_devs - MIDI devices # (1-4, default=4) 1803 1804 This module supports multiple cards. 1805 1806 Module snd-vx222 1807 ---------------- 1808 1809 Module for Digigram VX-Pocket VX222, V222 v2 and Mic cards. 1810 1811 mic - Enable Microphone on V222 Mic (NYI) 1812 ibl - Capture IBL size. (default = 0, minimum size) 1813 1814 This module supports multiple cards. 1815 1816 When the driver is compiled as a module and the hotplug firmware 1817 is supported, the firmware data is loaded via hotplug automatically. 1818 Install the necessary firmware files in alsa-firmware package. 1819 When no hotplug fw loader is available, you need to load the 1820 firmware via vxloader utility in alsa-tools package. To invoke 1821 vxloader automatically, add the following to /etc/modprobe.conf 1822 1823 install snd-vx222 /sbin/modprobe --first-time -i snd-vx222 && /usr/bin/vxloader 1824 1825 (for 2.2/2.4 kernels, add "post-install /usr/bin/vxloader" to 1826 /etc/modules.conf, instead.) 1827 IBL size defines the interrupts period for PCM. The smaller size 1828 gives smaller latency but leads to more CPU consumption, too. 1829 The size is usually aligned to 126. As default (=0), the smallest 1830 size is chosen. The possible IBL values can be found in 1831 /proc/asound/cardX/vx-status proc file. 1832 1833 The power-management is supported. 1834 1835 Module snd-vxpocket 1836 ------------------- 1837 1838 Module for Digigram VX-Pocket VX2 and 440 PCMCIA cards. 1839 1840 ibl - Capture IBL size. (default = 0, minimum size) 1841 1842 This module supports multiple cards. The module is compiled only when 1843 PCMCIA is supported on kernel. 1844 1845 With the older 2.6.x kernel, to activate the driver via the card 1846 manager, you'll need to set up /etc/pcmcia/vxpocket.conf. See the 1847 sound/pcmcia/vx/vxpocket.c. 2.6.13 or later kernel requires no 1848 longer require a config file. 1849 1850 When the driver is compiled as a module and the hotplug firmware 1851 is supported, the firmware data is loaded via hotplug automatically. 1852 Install the necessary firmware files in alsa-firmware package. 1853 When no hotplug fw loader is available, you need to load the 1854 firmware via vxloader utility in alsa-tools package. 1855 1856 About capture IBL, see the description of snd-vx222 module. 1857 1858 Note: snd-vxp440 driver is merged to snd-vxpocket driver since 1859 ALSA 1.0.10. 1860 1861 The power-management is supported. 1862 1863 Module snd-ymfpci 1864 ----------------- 1865 1866 Module for Yamaha PCI chips (YMF72x, YMF74x & YMF75x). 1867 1868 mpu_port - 0x300,0x330,0x332,0x334, 0 (disable) by default, 1869 1 (auto-detect for YMF744/754 only) 1870 fm_port - 0x388,0x398,0x3a0,0x3a8, 0 (disable) by default 1871 1 (auto-detect for YMF744/754 only) 1872 joystick_port - 0x201,0x202,0x204,0x205, 0 (disable) by default, 1873 1 (auto-detect) 1874 rear_switch - enable shared rear/line-in switch (bool) 1875 1876 This module supports autoprobe and multiple chips. 1877 1878 The power-management is supported. 1879 1880 Module snd-pdaudiocf 1881 -------------------- 1882 1883 Module for Sound Core PDAudioCF sound card. 1884 1885 The power-management is supported. 1886 1887 1888AC97 Quirk Option 1889================= 1890 1891The ac97_quirk option is used to enable/override the workaround for 1892specific devices on drivers for on-board AC'97 controllers like 1893snd-intel8x0. Some hardware have swapped output pins between Master 1894and Headphone, or Surround (thanks to confusion of AC'97 1895specifications from version to version :-) 1896 1897The driver provides the auto-detection of known problematic devices, 1898but some might be unknown or wrongly detected. In such a case, pass 1899the proper value with this option. 1900 1901The following strings are accepted: 1902 - default Don't override the default setting 1903 - none Disable the quirk 1904 - hp_only Bind Master and Headphone controls as a single control 1905 - swap_hp Swap headphone and master controls 1906 - swap_surround Swap master and surround controls 1907 - ad_sharing For AD1985, turn on OMS bit and use headphone 1908 - alc_jack For ALC65x, turn on the jack sense mode 1909 - inv_eapd Inverted EAPD implementation 1910 - mute_led Bind EAPD bit for turning on/off mute LED 1911 1912For backward compatibility, the corresponding integer value -1, 0, 1913... are accepted, too. 1914 1915For example, if "Master" volume control has no effect on your device 1916but only "Headphone" does, pass ac97_quirk=hp_only module option. 1917 1918 1919Configuring Non-ISAPNP Cards 1920============================ 1921 1922When the kernel is configured with ISA-PnP support, the modules 1923supporting the isapnp cards will have module options "isapnp". 1924If this option is set, *only* the ISA-PnP devices will be probed. 1925For probing the non ISA-PnP cards, you have to pass "isapnp=0" option 1926together with the proper i/o and irq configuration. 1927 1928When the kernel is configured without ISA-PnP support, isapnp option 1929will be not built in. 1930 1931 1932Module Autoloading Support 1933========================== 1934 1935The ALSA drivers can be loaded automatically on demand by defining 1936module aliases. The string 'snd-card-%1' is requested for ALSA native 1937devices where %i is sound card number from zero to seven. 1938 1939To auto-load an ALSA driver for OSS services, define the string 1940'sound-slot-%i' where %i means the slot number for OSS, which 1941corresponds to the card index of ALSA. Usually, define this 1942as the same card module. 1943 1944An example configuration for a single emu10k1 card is like below: 1945----- /etc/modprobe.conf 1946alias snd-card-0 snd-emu10k1 1947alias sound-slot-0 snd-emu10k1 1948----- /etc/modprobe.conf 1949 1950The available number of auto-loaded sound cards depends on the module 1951option "cards_limit" of snd module. As default it's set to 1. 1952To enable the auto-loading of multiple cards, specify the number of 1953sound cards in that option. 1954 1955When multiple cards are available, it'd better to specify the index 1956number for each card via module option, too, so that the order of 1957cards is kept consistent. 1958 1959An example configuration for two sound cards is like below: 1960 1961----- /etc/modprobe.conf 1962# ALSA portion 1963options snd cards_limit=2 1964alias snd-card-0 snd-interwave 1965alias snd-card-1 snd-ens1371 1966options snd-interwave index=0 1967options snd-ens1371 index=1 1968# OSS/Free portion 1969alias sound-slot-0 snd-interwave 1970alias sound-slot-1 snd-ens1371 1971----- /etc/modprobe.conf 1972 1973In this example, the interwave card is always loaded as the first card 1974(index 0) and ens1371 as the second (index 1). 1975 1976 1977ALSA PCM devices to OSS devices mapping 1978======================================= 1979 1980/dev/snd/pcmC0D0[c|p] -> /dev/audio0 (/dev/audio) -> minor 4 1981/dev/snd/pcmC0D0[c|p] -> /dev/dsp0 (/dev/dsp) -> minor 3 1982/dev/snd/pcmC0D1[c|p] -> /dev/adsp0 (/dev/adsp) -> minor 12 1983/dev/snd/pcmC1D0[c|p] -> /dev/audio1 -> minor 4+16 = 20 1984/dev/snd/pcmC1D0[c|p] -> /dev/dsp1 -> minor 3+16 = 19 1985/dev/snd/pcmC1D1[c|p] -> /dev/adsp1 -> minor 12+16 = 28 1986/dev/snd/pcmC2D0[c|p] -> /dev/audio2 -> minor 4+32 = 36 1987/dev/snd/pcmC2D0[c|p] -> /dev/dsp2 -> minor 3+32 = 39 1988/dev/snd/pcmC2D1[c|p] -> /dev/adsp2 -> minor 12+32 = 44 1989 1990The first number from /dev/snd/pcmC{X}D{Y}[c|p] expression means 1991sound card number and second means device number. The ALSA devices 1992have either 'c' or 'p' suffix indicating the direction, capture and 1993playback, respectively. 1994 1995Please note that the device mapping above may be varied via the module 1996options of snd-pcm-oss module. 1997 1998 1999Proc interfaces (/proc/asound) 2000============================== 2001 2002/proc/asound/card#/pcm#[cp]/oss 2003------------------------------- 2004 String "erase" - erase all additional informations about OSS applications 2005 String "<app_name> <fragments> <fragment_size> [<options>]" 2006 2007 <app_name> - name of application with (higher priority) or without path 2008 <fragments> - number of fragments or zero if auto 2009 <fragment_size> - size of fragment in bytes or zero if auto 2010 <options> - optional parameters 2011 - disable the application tries to open a pcm device for 2012 this channel but does not want to use it. 2013 (Cause a bug or mmap needs) 2014 It's good for Quake etc... 2015 - direct don't use plugins 2016 - block force block mode (rvplayer) 2017 - non-block force non-block mode 2018 - whole-frag write only whole fragments (optimization affecting 2019 playback only) 2020 - no-silence do not fill silence ahead to avoid clicks 2021 - buggy-ptr Returns the whitespace blocks in GETOPTR ioctl 2022 instead of filled blocks 2023 2024 Example: echo "x11amp 128 16384" > /proc/asound/card0/pcm0p/oss 2025 echo "squake 0 0 disable" > /proc/asound/card0/pcm0c/oss 2026 echo "rvplayer 0 0 block" > /proc/asound/card0/pcm0p/oss 2027 2028 2029Early Buffer Allocation 2030======================= 2031 2032Some drivers (e.g. hdsp) require the large contiguous buffers, and 2033sometimes it's too late to find such spaces when the driver module is 2034actually loaded due to memory fragmentation. You can pre-allocate the 2035PCM buffers by loading snd-page-alloc module and write commands to its 2036proc file in prior, for example, in the early boot stage like 2037/etc/init.d/*.local scripts. 2038 2039Reading the proc file /proc/drivers/snd-page-alloc shows the current 2040usage of page allocation. In writing, you can send the following 2041commands to the snd-page-alloc driver: 2042 2043 - add VENDOR DEVICE MASK SIZE BUFFERS 2044 2045 VENDOR and DEVICE are PCI vendor and device IDs. They take 2046 integer numbers (0x prefix is needed for the hex). 2047 MASK is the PCI DMA mask. Pass 0 if not restricted. 2048 SIZE is the size of each buffer to allocate. You can pass 2049 k and m suffix for KB and MB. The max number is 16MB. 2050 BUFFERS is the number of buffers to allocate. It must be greater 2051 than 0. The max number is 4. 2052 2053 - erase 2054 2055 This will erase the all pre-allocated buffers which are not in 2056 use. 2057 2058 2059Links and Addresses 2060=================== 2061 2062 ALSA project homepage 2063 http://www.alsa-project.org 2064 2065 ALSA Bug Tracking System 2066 https://bugtrack.alsa-project.org/bugs/ 2067 2068 ALSA Developers ML 2069 mailto:alsa-devel@alsa-project.org 2070