I think this is a dupe of bug 150361. UKThom, there is a new version available, could you try that:
http://archive.ubuntu.com/ubuntu/pool/main/x/xserver-xorg-video-ati/
I think this is a dupe of bug 150361. UKThom, there is a new version available, could you try that:
http:// archive. ubuntu. com/ubuntu/ pool/main/ x/xserver- xorg-video- ati/