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.
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