Re: Saving battery power

[Thorsten Schmidt <meine_mailings@web.de>]

Hello,

Am Freitag, 9. März 2007 21:41 schrieb Mike Hommey:
> On Fri, Mar 09, 2007 at 09:25:46PM +0100, Thorsten Schmidt 
<meine_mailings@web.de> wrote:
> > Hello,
> >
> > Am Freitag, 9. März 2007 20:42 schrieb Mike Hommey:
> > > On Fri, Mar 09, 2007 at 08:32:21PM +0100, Thorsten Schmidt
> >
> > <meine_mailings@web.de> wrote:
> > > > Hello at all,
> > > >
> > > > for some time I've been trying to reduce my laptop's power
> > > > consumption (while running on battery power) on my Fujitsu-Siemens
> > > > Lifebook C1320 with Debian etch.
> > > > - I echo powersave to
> > > > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor - I installed
> > > > laptop-mode in order to shut down my harddrive if it is unused. - I
> > > > don't use swap,  /tmp/ is a ramdisk-mount and /var/tmp links to /tmp,
> > > > (I've 1 GB RAM)
> > > > Thus my hd is barely used and my CPU reaches C3.
> > > >
> > > > But for some reason, Windows is more efficient in power saving. (3,5h
> > > > vs. 4,5h battery life while surfing wireless).
> > > > Is there anything else I can do to save battery power?
> > >
> > > Basically, no, except waiting for Linux ACPI support to get better.

ok, ehm.
Is this about to happen soon?
Would switching from vanilla (2.6.20.1) to -mm be an option?

Thanks,
Thorsten.