I think this is related to
#1166765 (https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/1166765)
The workaround that worked for me was posted in #9 (https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/1166765/comments/9)
I think this is related to
#1166765 (https:/ /bugs.launchpad .net/ubuntu/ +source/ compiz/ +bug/1166765)
The workaround that worked for me was posted in #9 (https:/ /bugs.launchpad .net/ubuntu/ +source/ compiz/ +bug/1166765/ comments/ 9)