[ltp] Possible solution to ACPI power drain with 2.6.10

[Grahame Bowland]

On Tue, Jan 18, 2005 at 07:15:09AM +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?rg Billeter, on
> >>http://bugzilla.kernel.org/show_bug.cgi?id=3022.
> >>
> >>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
> >
> 
> 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 ?

Same for me - my T41 with a Radeon 9000 (M9) still drains at about 5W.
Note that someone did mention in bugzilla that the driver checks for
powermacs because there are specific timings in the driver that are
known not to work with other hardware. Apparently ATI are working on it.