Version: (using KDE 4.3.2) OS: Linux Installed from: Ubuntu Packages If I have the system tray widget installed then it causes plasma-desktop and Xorg to consume almost 100% CPU between them. Removing the widget immediately causes the CPU usage to drop. There are other bugs about this, but they don't seem to match my scenario. I have tried hiding particular icons, and not hiding any. It doesn't make a difference either way. It doesn't matter which applications I have running --- even with no applications running that use the System Tray I still get the same high CPU usage.
In the System Tray configuration dialog, do you have one (or more) of the Icon Categories ("Application status", ...) disabled ? Thanks
On the System Tray Settings / Information panel there are four settings labelled "Icons" at the bottom. I presume these are the settings you are referring to. Currently they are all unchecked because I unchecked them in order to try and avoid the problem (they were all originally checked) after a bit of googling suggested that the System Tray widget was the problem. I've experimented with various combinations of these. It appears that if the Hardware Control box is unchecked, and either System Services or Application Status is also unchecked then the problem sets in. If any three are checked (only one unchecked) then the problem doesn't manifest. If Hardware Control and Communications are unchecked (and the others checked) then there is no problem. Given this, it would appear that my original problem had another cause (which has gone away) and my current problem is due to all four boxes being unchecked.
Mh, then, your problem will be the one reported at bug 207177. Do you agree ? Thanks
This is certainly similar, except that if "Application status" and "Communications" are unchecked there is no problem. The problem only occurs with "Hardware Control" and either "System Services" or "Application Status". Incidentally, I am also running this on a Dell Inspiron laptop (though mine is a 9400). BTW, thanks for responding on this --- at least I currently have a working system tray that doesn't hog the CPU.
*** This bug has been marked as a duplicate of bug 207177 ***