[ltp] what to use to save battery

[Andrew Barr]

On Tue, 2006-09-05 at 20:11 +0200, Florian Manschwetus wrote:
> Andrew Barr wrote:
> > Don't forget that having active USB devices prevents CPU powersaving.
> no problem here (t60) and for cpu throttling forget userspace deamons 
> just use ondemand or powersave governor of kernel powermanagement.

If your USB bus is active, it prevents the processor from leaving C1,
which causes higher power consumption. Use a USB mouse or memory stick
and watch /proc/acpi/processor/CPU[0,1]/power. This is why people
recommend turning off Bluetooth and the fingerprint reader (USB devices)
to save power.

Andrew