For me, the workaround to #1165232 as shown below seems to resolve the problem:
Alternative solution: Install this package from PPA mediahacks: https://launchpad.net/~dtl131/+archive/mediahacks/+files/xserver-xorg-video-openchrome_0.3.2-0ubuntu1_i386.deb -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-openchrome in Ubuntu. https://bugs.launchpad.net/bugs/1086035 Title: [VM800/P4M800Pro/VN800/CN700] X fails to start after upgrade To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-openchrome/+bug/1086035/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
