Re: APM poweroff

James Mulcahy (james@flame.org)
Sun, 26 Dec 1999 15:37:22 +0000 (GMT)


On Mon, 27 Dec 1999, Stephen Rothwell wrote:

> > I've got a TMC 15VGF motherboard with a VIA chipset. (apm: BIOS version
> > 1.2 Flags 0x07 (Driver version 1.9))
>
> Thanks, anther one to note down :-)

It seems to actually be a MVP3 chipset, not sure why i thought it was a
VIA one.

> It is a know problem with several recent BIOS's (unfortunately). You need
> to get the patch off the APM home page (http://linuxcare.com.au/apm/)
> and recompile your kernel after enabling the "Real mode power off"
> configuration option.

Thanks, willdo!

> > ps. My processor is a MAD k6-2 400, and I'm fairly sure the apm code in
> > the bios isn't faulty, because the machine switches itself off when it
> > gets shutdown from windows...
>
> Your BIOS is buggy. Windows returns to real mode before calling
> the APM BIOS power off routine. Linux normally does not (and should
> not need to). Complain to your MB manfacturer (first see if there is
> an updated BIOS on their web site). We have managed to get this fixed
> in some BIOS's.

They seem to have started charging for bios updates, so I think i'll give
that one a miss, but I'll send them an email about it anyway....

> Cheers,
> Stephen Rothwell Linux APM maintiner
> http://linuxcare.com.au/sfr/

Thanks very much!

--James

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