I think this is a duplicate of https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/269357
If someone can confirm this it can be marked as duplicate.
I think this is a duplicate of https:/ /bugs.launchpad .net/ubuntu/ +source/ xserver- xorg-video- ati/+bug/ 269357
If someone can confirm this it can be marked as duplicate.