Martin Steigerwald: > Am Freitag, 16. März 2012 schrieb Dietz Pröpper: > > Benjamin Eikel: > > > > I suspect something like that, but can't nail it down. The fact, > > > > that if I fire up gnome, I see the "expected" consumption, around > > > > 15W, and on a freshly created account, kde pulls around 22W > > > > idleing around indicates that it's in some way kde related I > > > > think. > > > > > > have you tried "powertop" [1] to get an idea which process might be > > > responsible for the power consumption? > > > > Indeed, I did, which led me to plasma-desktop in the first place. I > > see around 300 wakeups/s, 1/3 of them via plasma-desktop. Expected > > are around 120-150 on "my" kde workspace. Of course, in "idle" state. > > Hmmm, I have easily around 500-600 wakeups/second.
On an idle system?
> But I do not even see
> plasma-desktop in the process list on the Overview tab of powertop.
I see between 20 and 100 events from plasma-desktop, and around the same
from the X sever (nvidia, Quadro FX 880M). CPU-wise, plasma-desktop
permanently pulls 1-2% cpu time, and the x server another 3-5%.
> Thus is you have plasma-desktop in the first place, I think this is not
> normal.
Ack. And the behaviour is not that clear that I can rule out other heavy
electrons ;-).
> Unless you do not run anything else at all in the moment. I
> think I will try with all user applications closed and look again.
Yes, that will be the next step. Did not really have the time to look into
this much deeper.
> I would test with a new user with a bog standard KDE configuration
> first.
That was the first try I gave ;-). And power consumption was basically the
same. And, as written, it seems to be something kde related, because
neither with a gnome desktop, nor with no X11 running at all I could
reproduce the power drain.
> If that is better I would disable plasmoids one by one starting
> with those which I added yourself until I find the culprit. Since these
> are running in the context of plasma-desktop and I am not even sure
> whether they run as threads there, I do not know any other approach
> that would work.
Hopefully I'll have the time to look into that the next days a littl
deeper.
(You know, knowing that probably s.t. is broken on my side makes diagnosis
much easier ;-).
regards,
Dietz
--
To be a bug is a dumb thing, a silly and a bump thing,
but to be a bug is something, and You're not a thing at all.
signature.asc
Description: This is a digitally signed message part.
