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

[Kasper Peeters]

> 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). 

I had problems with all ati drivers up to 8.27.10. With that one,
powersave seems to work.
 
> 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 Ubuntu's current 2.6.15, both cores on powersave mode, aticonfig
--set-powerstate=1, wlan on but powersaving enabled with "iwpriv eth1
set_power 7", brightness two notches down from the maximum battery
bios setting, laptop mode turned off (can't stand the delay when the
HD spins up) I get about 17500 mW.

Supposedly, lowering the CONFIG_HZ parameter of the kernel to 100 Hz
can help a bit too, but I haven't tried that yet.

Kasper