Comment 22 for bug 195721

I again tried different drivers with options I took from the driver's documentation but I could not work out how to get around this bug.
As long as I do not use any 3d, the system is stable.

But if I do not touch the notebook for a few minutes, the screen slowly fades out and the system crashes.
It crashes immediately when I open the screen-saver applet to turn of the screensaver (it uses 3d).

I started glxgears, glxheads and glxinfo and the system did not crash for some minutes.
Another time, I started glxinfo and the screen went black immediately, another time the system freezed.
The last output of glxinfo:
name of display: :0.0

Since that happens with ati, fglrx and radeon it does not seam to be driver-related?