my Pentium M never go in C3 nor C4 modes...

[Frédéric BOITEUX]

Le ven 01 jun 2007 15:46:45 CEST, Benjamin Pineau
<benjamin_pineau at zouh.org> a écrit :

> Did you tried to set 'Option "NoDRI"' on your graphic card's "Device"
> xorg.conf section ? Some have reported that this improves things for 
> radeon too (and not only for i915) (and/or look at radeontool).

Yes, you're right, removing DRI module from my xorg.conf dropped a bit
the power consumption, and the processor reached the C3 and C4 states !
The difficulty here was that the top wake-up task was interrupts from
hardware, and as a lot of them shared the same interrupt (USB,
pcmcia, )...

> >    5.0% ( 12.7)   gnome-screensav : schedule_timeout (process_timeout)
> 
> I guess shutting down the screen though DPMS would be even more
> energy efficient (is gnome-screensaver used to do that much wakeups ?).

Yes, it's the default Gnome desktop... but I think the number of
wake-ups by all Gnome (or other) apps is due to the fact I don't have
HPET activated, so the processor can't sleep a long time...

	Frédéric