[bisected] PS/2 keyboard and mouse dead on resume on Intel D845BG

From: Ondrej Zary
Date: Sun Oct 07 2012 - 09:14:17 EST


Hello,
Intel D845BG board comes out of S3 with PS/2 keyboard and mouse completely
dead. The machine works otherwise (with USB keyboard or over network). When
rebooted in this state, the BIOS hangs with blank screen. I have the latest
BIOS installed (P08).

Old kernels worked. Bisection pointed to commit:
b6dacf63e9fb2e7a1369843d6cef332f76fca6a3
(ACPI: Unconditionally set SCI_EN on resume)

Commenting out this line in drivers/acpi/sleep.c:
acpi_write_bit_register(ACPI_BITREG_SCI_ENABLE, 1);
fixes the problem.

Any ideas why this breaks on this system?

--
Ondrej Zary
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/