It's most probably due to this mesa bug: https://bugs.edge.launchpad.net/ubuntu/+source/mesa/+bug/638725 Feel free to re-open if the upcoming mesa fix doesn't solve the problem.
** Changed in: unity (Ubuntu) Status: New => Invalid -- choosing netbook for login session results in a blank white screen https://bugs.launchpad.net/bugs/638725 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to mesa in ubuntu. _______________________________________________ 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