Hi: Could you check MigrationHeuristic setting? And try with "greedy"? ---8<--- Section "Device" ... Driver "radeon" ... # Option "MigrationHeuristic" "smart" # Near as slow as with default/always http://nouveau.freedesktop.org/wiki/EXA Option "MigrationHeuristic" "greedy" # Fast as XAA, X.Org X Server 1.6.5, 2009-10-29 http://lists.freedesktop.org/archives/xorg/2008-May/thread.html#35451 ... EndSection --->8--- GSR