I am experiencing same issue, as far as i can judge from this description. It looks like a duplicate of Bug #1068601, please check for this. I filled some information on that bug, which may apply here as well. Please look into this as well. Advise me on additional steps to define root cause.
-- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1090761 Title: no visual, lightdm and desktop do load To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1090761/+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