Thank you for your bug report, can you try to log in, then go to a vt (ctrl-alt-f1), copy ~/.xsession-errors and add it to the bug?
the issue seems similar to bug #951404 could you add your /var/log/syslog, Xorg.0.log, Xorg.0.log.old to the bug as well? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/951794 Title: launch of graphical session fails and returns to log in screen To manage notifications about this bug go to: https://bugs.launchpad.net/gdm/+bug/951794/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs