Re: [gpm] ATI fglrx voltage switch using gnome-power-manager

[Richard Hughes <hughsient gmail com>]

On Thu, 2006-11-09 at 22:21 +0100, Holger Macht wrote:
> On Thu 09. Nov - 21:09:37, Richard Hughes wrote:
> > On Thu, 2006-11-09 at 20:35 +0100, Adolfo Gonz�z Bl�uez wrote:
> > > Hello,
> > > 
> > > I'm wondering if there's any way (now or planned) to change the voltage
> > > from ATI video cards (using the fglrx) when switching from betteries to
> > > ac.
> > 
> > Yes, I was thinking of adding similar functionality to HAL to do this
> > for nvidia cards.
> > 
> > > I mean, on batteries, switch the ati card to low voltage; and on ac,
> > > swithc the ati card to high voltage.
> > > 
> > > This can be donde using the aticonfig utility:
> > > aticonfig --lsp -> List de powerstates
> > > aticonfig --set-powerstate=N -> Set the voltage to N (output from above)
> > 
> > Is this 110% safe? i.e. will we break systems if this is done wrong?
> 
> Just a note: We are already doing this for a couple of month in powersaved
> and I didn't get any bugreports so far, but who knows ;-)

Cool. Cheers for the info Holger. Have you got a weblink for the code? I
think I can push this into a HAL method on a video device (or even in
LowPowerMode), and then we can share the code in powersaved and g-p-m.

Cheers,

Richard.