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/freebsd-10.2-release/sys/dev/acpica/
H A Dacpi_smbat.cdiff 186026 Sat Dec 13 06:16:55 MST 2008 silby Add the sysctl debug.acpi.batt.batt_sleep_ms.

On some laptops with smart batteries, enabling battery monitoring
software causes keystrokes from atkbd to be lost. This has also been
reported on Linux, and is apparently due to the keyboard and I2C line
for the battery being routed through the same chip. Whether that's
accurate or not, adding extra sleeps to the status checking code
causes the problem to go away.

I've been running this for nearly six months now on my laptop,
it works like a charm.

Reviewed by: Nate Lawson (in a previous revision)
MFC after: 2 weeks

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