I have a Dell C510 with the radeon mobility M6 ly video and in Karmic, using no xorg.conf or one with xaa acceleration causes the screen garbling noted above. I also can't run system monitor or some of the screen savers without getting a badly distorted window or no display at all.
Creating an xorg.conf and changing to exa allows everything to display correctly, but the video performance is badly degraded. I have not experienced any lockups in either mode.
I have a Dell C510 with the radeon mobility M6 ly video and in Karmic, using no xorg.conf or one with xaa acceleration causes the screen garbling noted above. I also can't run system monitor or some of the screen savers without getting a badly distorted window or no display at all.
Creating an xorg.conf and changing to exa allows everything to display correctly, but the video performance is badly degraded. I have not experienced any lockups in either mode.