RE: Missing keypress when ACPI enabled

[Grover, Andrew]

> From: [e-mail] [mailto:[e-mail]] 
> Since about 2.5.60, the first 2.5 kernel that has 
> built/booted for me, I've noticed X/Kscreensaver fails to 
> capture a keystroke after about 20 minutes of inactivity, in 
> the password login prompt. It is only the first keypress that 
> is lost, all later keypresses work fine. I believe I've 
> narrowed it down to an interaction with having ACPI enabled, 
> as booting the kernel with 'acpi=off' seems to make the 
> problem go away. I've attached dmesg and .config output. 
> Please let me know if I can assist further.

Aha, you have an IBM A20 (or similar). You are not the first one to
report this, and indeed this happens on my T20, even under Windows.
Given that, I would suspect this is a side effect of some unknown IBM
BIOS enhancement, so I don't know what we can do without IBM telling us
more about what's going on.

Regards -- Andy