Power-drain during suspend?

[Anish Mistry]

On Saturday 11 February 2006 16:39, Gregers Petersen wrote:
> Tobias Roth wrote:
> >>> 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.
>
> Yes - I'm using Radeontool in the suggested way with both display &
> dac ..
>
> > 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.
>
> The thing is that I'm in need of USB-related functions on a more or
> less daily basis, which makes it difficult to remove the relevant
> kernel-modules :-/
	Just a data point.  I have a similar problem on my laptop (Fujitsu 
P2110).  Using the acpi_video DPMS patch posted by jhb a while ago 
helps out quite a lot and allows me to suspend for almost 24 hours 
vs. about 9.  This is still way less than Windows 2000 on the same 
system which can be suspended for a week with just over 25% power 
drain.  I've tried with a stripped down kernel that is just enough to 
boot eg. no USB, Firewire, network, etc.do_power_nodriver=3  and I 
still have the same problem.
	You can try a stripped down kernel test, but I doubt it would solve 
the problem.  If anyone has anymore suggestions I'm sure there are 
plenty more people that would like to hear them.
-- 
Anish Mistry
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