Solved here: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-psb/+bug/406651
Short story:
sudo apt-get remove psb-kernel-source sudo apt-get install psb-kernel-source
will fix it (provided you have the driver packages updated and installed already). install --reinstall won't work.
Solved here: /bugs.launchpad .net/ubuntu/ +source/ xserver- xorg-video- psb/+bug/ 406651
https:/
Short story:
sudo apt-get remove psb-kernel-source
sudo apt-get install psb-kernel-source
will fix it (provided you have the driver packages updated and installed already). install --reinstall won't work.