Re: 2.6.13-rc3 Battery times at 100/250/1000 Hz = Zero difference

From: Tony Lindgren
Date: Mon Jul 25 2005 - 05:22:09 EST

* Voluspa <lista1@xxxxxxxxx> [050722 11:46]:
> On Fri, 22 Jul 2005 20:02:36 +0200 Pavel Machek wrote:
> > will not help. It seems like your machine is simply not able to do
> > reasonable powersaving.
> Digging up this patch from last month regarding C2 on a AMD K7 implies
> that the whole blame can be put on kernel acpi:

AFAIK Linux ACPI expects BIOS to contain all the necessary stuff to enable
C2 and C3. Otherwise they won't get enabled, and you have to create a custom
module like the amd76x_pm is.

There's been some talk on adding a module to enable C2 and C3 states for
various chipsets, but nobody seems to have enough time to do it...

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