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

[Ondrej Zary]

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
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