It seems similar to the issue observed with some ATI cards (drivers in fact).
Can you try the configuration change proposed here: https://bugs.edge.launchpad.net/ubuntu/+source/notify-osd/+bug/459753/comments/5 and let us know whether that solves the issue?
It seems similar to the issue observed with some ATI cards (drivers in fact).
Can you try the configuration change proposed here: https:/ /bugs.edge. launchpad. net/ubuntu/ +source/ notify- osd/+bug/ 459753/ comments/ 5 and let us know whether that solves the issue?