Can be solved by editing xorg.conf file. Please add accelmethod exa in device section. Like this: Section "Device" Option "AccelMethod" "EXA" EndSection
Looks like it is same issue here https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/416001
Can be solved by editing xorg.conf file. Please add accelmethod exa in device section.
Like this:
Section "Device"
Option "AccelMethod" "EXA"
EndSection
Looks like it is same issue here https:/ /bugs.launchpad .net/ubuntu/ +source/ xserver- xorg-video- ati/+bug/ 416001