Power-drain during suspend?

[Tobias Roth]

On Fri, Feb 10, 2006 at 03:03:30PM -0800, Kevin Oberman wrote:
> > Date: Fri, 10 Feb 2006 22:06:15 +0100
> > From: Gregers Petersen <gp.ioa at cbs.dk>
> > Sender: owner-freebsd-mobile at freebsd.org
> > 
> > Kevin Oberman wrote:
> > 
> > >>>>> hw.pci.do_power_nodriver=[1|2|3]
> > 
> > I have been changing the setting of the above to '3' - and done a bit of 
> > "testing" with suspend/resume.
> > The result is not much different from before, the R51 still "eats" the 
> > battery after 6-7 hours of suspend :-/
> > I have tried to suspend without X.org running to test if this had any 
> > effect, but there is no clear difference - and I end up with pusslement.
> > 
> > Any suggestions about what else I could try out ?
> 
> Are you using radeontool and turning off both the DAC and the display
> (assuming you have a Radeon video chip)? It saves a quite a bit of
> power. Other than that, I'm not sure what to suggest.
> 
> Sorry, but maybe someone else has a better idea. 

Wasn't there an issue with usb drivers not being able to properly
shut down and put into powersave mode all connected devices? Has
that been remedied?

If not you could try removing everything usb-related from your
kernel, and making sure no usb modules are loaded and test again.

cheers, Tobias