[ltp] T60 power management (fglrx, aticonfig --set-powerstate )

[Nils Kanning]

On Tue, 2006-08-08 at 15:15 +0200, Florian Manschwetus wrote:
> Nils Kanning wrote:
> > Hello, 
> > i'm just configuring my new T60 and i'm not quite happy with the power
> > consumption in battery mode. 
> > 
> > Untill now i'm using cpufeq with the powersave governor and
> > laptop-mode. 
> > I get about 2:30h battery life which is not very much compared to about
> > 4h in windows. 
> > 
> > I also tried "aticonfig --set-powerstate=1" (T60 with x1300). this
> > decreases the graphics performance but does not reduce the power
> > consumption in my case (latest fglrx version in debian unstable). 
> > 
> > Maybe someone knows some trick how to get ati's powersaving working or
> > has other ideas how to get more battery life? 
> > 
> > Furthermore it would be nice if other T60 users can post the output of: 
> > cat /proc/acpi/battery/BAT0/state | grep present 
> > when running on battery. 
> > 
> > With debian i get about 20000mW. 
> > In windows its about 16000mW (measured with some shareware tool - don't
> > know the name) 
> > 
> > Thanks
> > Nils 
> > 
> > debian unstable 
> > kernel 2.6.17 smp support 
> > fglrx 8.24.8
> > bios 1.09
> > 
> gentoo testing
> 1.06 or 07 bios
> fglrx 8.26.18 / 8.27
> i reach the 4h with freqscaling and coredisabling with low voltage ati 
> power state and dimmed display. (with wlan)
> florian

how do you do the core disabling? is it a special kernel feature or a
feature of the centrino_speedstep module?
which kernel do you use?

nils