I had to turn off modeset because of other problems. When I did, random icons in the KDE 4 system tray kept getting corrupted. I set Option "AccelMethod" "XAA" which resulted in the messages (II) RADEON(0): XAA Render acceleration unsupported on Radeon 9500/9700 and newer. Please use EXA instead. (II) RADEON(0): Render acceleration disabled and this worked around the bug.
Created attachment 26843 [details] log for corrupted tray
This occurred because DRI was disabled, because my Virtual was too big. I set my Virtual to the same resolution as the physical screen, and now DRI works and the system tray displays correctly. Changed bug summary accordingly.
Can you please say whether https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/434376 is this bug please? There's a screenshot attached there. Here is a direct link: http://launchpadlibrarian.net/32495076/kde_4.3_ati_driver__ati_mobylity_radeon_ly.png .
No, it's not the same bug.
*** This bug has been marked as a duplicate of bug 18397 ***
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