The screen of my 01:00.0 VGA compatible controller: ATI Technologies Inc RV610 [Radeon HD 2400 XT] is totally garbled, completely random junk is displayed. When the mouse is moved a moving (garbled) box can be seen on the screen. Switching to a virtual console and back to X crashes the screen (nothing is seen anymore). The issue is present in kernel-2.6.38.6-26.rc1.fc15.x86_64 and kernel-2.6.38.6-27.fc15.x86_64 The previous version kernel-2.6.38.5-24.fc15.x86_64 works fine (although I've experienced a few OOPS with this one, too; unfortunately abrt hasn't produced any crash dumps).
Probably caused by; * Tue May 03 2011 Dave Airlie <airlied> 2.6.38.5-23 - radeon updates from 2.6.39 with cayman + fixes for lots of things including Fusion.
can you get an dmesg and Xorg log from it?
Created attachment 501257 [details] output of dmesg
Created attachment 501258 [details] xorg log
Issue is still present on kernel-2.6.38.8-32.
Created attachment 511062 [details] Oops messages An OOPS log for the older kernels that didn't suffer from the garbled display problem.
did you install fglrx at any point in between?
I got a new desktop in August so I can't help in debugging this any longer. IIRC I didn't have fglrx installed.
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