Maybe the problem is in Intel Graphic Card, I have the same problem with compiz but after installing the Intel Graphics Drivers, the problem gone. Try to install it : 1. Type in Terminal(Ctrl+Alt+T) (without quotes) "wget --no-check-certificate https://download.01.org/gfx/RPM-GPG-KEY-ilg -O - | \sudo apt-key add -" 2. Go to this link and download drivers
link
O problema passou para mim, apenas digitei terminal:
sudo apt-get autoremove
Espero que isso ajude você!