[ltp] Possible solution to ACPI power drain with 2.6.10

[Bob Alexander]

obi wrote:
> On Tue, Jan 18, 2005 at 02:24:26PM +0100, Michele Lamarca wrote:
> 
>>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 Jürg 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 ?
>>>
>>>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.
>>>
>>
>>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.
> 
> 
> Wow! It looks like is working on my T41! I left it suspended for few
> hours, and just resumed it: only 5% of battery gone and it's not warm!
> So the culprit seems indeed to be the graphic card: I do have a M9.
> 
> cheers,
> graziano
> 

Graziano you lucky bastard :))) (of course I am joking)

My T40 has an M9 too but it did not appear working :(

Do you confirm then only thing you did is remove the offending parameter 
from the first #define in the source ???

Ciao
Bob
(Roma)