[ltp] X200 Battery Life

[Henrique de Moraes Holschuh]

On Wed, 29 Oct 2008, John Li wrote:
> On Tue, Oct 28, 2008 at 10:11:27AM -0200, Henrique de Moraes Holschuh wrote:
> > On Mon, 27 Oct 2008, John Li wrote:
> > > Compared to Vista, Linux still trails behind by ~3 watts at idle.
> > 
> > Eject the bay.  I mean it.  Does that fix things?
> 
> I've never used a dock before, but I'm pretty sure I don't have any
> modules loaded for the bay.

"Ejecting" the bay cuts power to the device inside it...

> I believe one setting in the Lenovo Power Manager program with no
> Linux equivalent is PCI powersaving. I saw a patch on the lkml for
> PCIe powersaving[1] (written by someone at Intel), but it doesn't seem
> like it ever got into Linus's repo[2].

Yeah, PCIe power saving + aggressive AHCI sata link power saving could be
it...

-- 
  "One disk to rule them all, One disk to find them. One disk to bring
  them all and in the darkness grind them. In the Land of Redmond
  where the shadows lie." -- The Silicon Valley Tarot
  Henrique Holschuh