[ltp] Possible solution to ACPI power drain with 2.6.10

[Michele Lamarca]

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On Tue, 18 Jan 2005 13:40:26 +0100, Tino Keitel <tino.keitel@gmx.de> wrote:
> On Tue, Jan 18, 2005 at 07:15:09 +0100, Bob Alexander wrote:
> > Tino Keitel wrote:
> > >On Sun, Jan 16, 2005 at 23:02:47 +0100, Michele Lamarca wrote:
> > >
> > >>Hello everyone,
> > >>there's a possible solution from J=FCrg Billeter, on
> > >>http://bugzilla.kernel.org/show_bug.cgi?id=3D3022.
> > >>
> > >>He suggests to remove the CONFIG_PPC_PMAC condition in
> > >>drivers/video/aty/radeon_pm.c. Doing so, he reduces the power drain
> > >>of his T40p.
> > >>
> > >>This works for me. On my T40 (radeon 7500) power drain went from 2.7
> > >>W to 0 .8 W
> > >
> >=20
> > Unfortunately my T40 with Radeon 9000 (M9) keeps on draining around 5W
> > per hour in ACPI sleep :(
> >
> > I just ekiminated the #define of the CONFIG_PPC_PMAC in the source ...
> > was that enough ?
>=20
> If I understand it right, you don't need to eliminate the #define, but
> allways enable the #define, even on non-PPC-PMAC systems, since the
> desired actions will only be taken if CONFIG_PPC_PMAC is defined.
>=20
Right, but there'a little bit more. Attached is the patch I put on
bugzilla. It seems working for some lucky ThinkPads, but some others
can't resume.

I'm using 2.6.10-mm3 and without another patch
(http://lkml.org/lkml/2005/1/11/120) alsa oopses on resume.

Regards,
Michele

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