[ltp] PCI Bus power saving

[Noah Dain]

On 8/2/06, Alex Deucher <alexdeucher@gmail.com> wrote:
> On 8/2/06, Shem Multinymous <multinymous@gmail.com> wrote:
> > Hi,
> >
> > Under Windows, the ThinkPad power manager offers the following options
> > (quoting PWRMGR.CHM)
> >
> > PCI Bus - Automatic/Disable: If you select Automatic, the PCI Bus
> > clock is stopped if there is no activity. If you select Disable, the
> > battery life will be shorter.
>
> FWIW, years ago you had to disable the PCI power management in the
> BIOS or the soundcard didn't work.  there was even a hack in the sound
> driver (thinkpad=1) that would disable it after the fact.  I think
> everything just works now.
>
> Alex
>
> >
> > CPU - Automatic/Disable: If you select Automatic, then when there is
> > no system activity for a specified interval, the power-saving function
> > is enabled and the microprocessor clock is stopped automatically. If
> > you select Disable, the battery life will be shorter.
> >
> > There are similar options in the BIOS.
> >
> > Does anyone know what they do exactly, and whether Linux can do that too?
> >
> >   Shem
> > --
> > The linux-thinkpad mailing list home page is at:
> > http://mailman.linux-thinkpad.org/mailman/listinfo/linux-thinkpad
> >
> --
> The linux-thinkpad mailing list home page is at:
> http://mailman.linux-thinkpad.org/mailman/listinfo/linux-thinkpad
>

there are linux tools to adjust such settings:
http://tpctl.sourceforge.net/

Although, they do seem outdated.  There are links to a newer kernel
module for smapi tho.


-- 
Noah Dain
"I don't want to make toys, I want to be a dentist!"