Mikael Pettersson wrote:
> On this machine (Gigabyte mobo with i815EP chipset and a PIII),
> APM worked fine up to 2.6.22. With 2.6.23-rc1 however the APM
> driver fails to locate the APM bios:
> 
> --- dmesg-2.6.22	2007-07-23 14:07:46.000000000 +0200
> +++ dmesg-2.6.23-rc1	2007-07-23 14:48:24.000000000 +0200
> @@ -102,7 +105,7 @@
>  Unpacking initramfs... done
>  Freeing initrd memory: 976k freed
>  Machine check exception polling timer started.
> -apm: BIOS version 1.2 Flags 0x07 (Driver version 1.16ac)
> +apm: BIOS not found.
>  io scheduler noop registered
>  io scheduler anticipatory registered (default)
>  io scheduler deadline registered
> 
> The only change in 2.6.23-rc1 to arch/i386/kernel/apm.c is a
> trivial nofreeze flag removal, so I suspect the boot code changes,
> perhaps the new arch/i386/boot/apm.c:query_apm_bios().
> 

Seems like a reasonable suspicion.

Could you try the attached patch and:

a) see if it helps the situation, and
b) tell me what it prints?

	-hpa