Another user has a similar problem with fbdev. He had to downgrade:
xserver-xorg-video-fbdev xserver-xorg-core
Link: http://ubuntuforums.org/showthread.php?t=2264322&page=16&p=13254875#post13254875
Another user has a similar problem with fbdev. He had to downgrade:
xserver- xorg-video- fbdev
xserver-xorg-core
Link: http:// ubuntuforums. org/showthread. php?t=2264322& page=16& p=13254875# post13254875