Comment 24 for bug 272699

Created an attachment (id=21856)
plasma_b0rkage.png

Forwarding this bug from a Ubuntu reporter:
https://bugs.edge.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/272699

[Problem]
With many windows open, sometimes KDE Plasma desktop shows corruption such as shown in the attached image (or available at http://www.hot.ee/hvc/plasma_b0rkage.png)

[Original Report]
Sometimes when I have lots of windows open and close or move them the Plasma desktop doesn't update correctly and usually the area directly behind the closed window doesn't get repainted but instead shows random data (sometimes data from other windows, not interactable of course).

This is a pretty extreme example when I closed windows covering the whole desktop and it all got corrupt. It didn't return to being normal when I switched virtual desktops, only when I right clicked on the desktop.

http://www.hot.ee/hvc/plasma_b0rkage.png

I'm running a Intel Core 2 Duo on a laptop. The chipset is Intel's GM965 with the X3100 graphics. I'm running Intrepid with all the newest Xorg and KDE stuff installed (7.4, xserver 1.5 etc).

As you can see, the background of the Kopete icon in the system tray is corrupt as well. This also happens from time to time.

Adding the following to my xorg.conf seems to "fix" this bug.

Section "Extensions"
        Option "Composite" "Disable"
EndSection