For me disabling compiz as proposed here https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/159263/comments/11 solves the bug. Maybe a duplicate of 159263?
For me disabling compiz as proposed here https:/ /bugs.launchpad .net/ubuntu/ +source/ compiz/ +bug/159263/ comments/ 11 solves the bug. Maybe a duplicate of 159263?