Hi: I was reading the list of radeon reports and found yours. Time ago I experienced a problem with similar symptoms, that got fixed by adding Option "MigrationHeuristic" "greedy" (that go back to XAA, as other person suggested). Maybe your case is the same. I got the idea to test that option from: http://lists.freedesktop.org/archives/xorg/2008-May/thread.html#35451 GSR