Comment 1 for bug 364162

I don't think that this is a duplicate of https://bugs.launchpad.net/bugs/379082 .
There is no screen flashing or brightness changing like described in the other bug. Only the whole Plasma and KWin and all window stuff is disappearing completely (without flashing back or something).

I also updated to the latest xserver-xorg-video-intel package of the Ubuntu karmic repository like Laurens (The rest is still jauty). Now the Error Iine in dmesg I mentioned in the original report is gone, but the problem I described is not gone.
With the updated package I am not able to use Open GL desktop effects but if I am switching to XRender effects, the problem is still there.