A very annoying thing has started to happen a couple of days ago. Several times a day the screen will go completely black. It’s seems to happen when a new window or plasmoid is created. Not nearly always but often enough to be a severe pain in the ass. All taht remains visible is the mouse pointer, when i move that to the top right corner (which activates present windows) and everything will re-appear. However, the system will also become extremely unresponsive until i can renice the Xorg process. Xorg will then continue to use CPU cycles at a higher than normal rate (about 20-25%).
Any ideas on what caused this and how to solve it?
Opensuse 11.1 KDE4.2 QT 4.5 rc1