This sounds as if there is something in your user directory which has been messed up.
Can you please chown your home directory recursively, to make sure you are the owner of all the files and directories, and let us know if it makes a difference. Assuming your username is "mike", this is the command I suggest that you run: sudo chown -R mike:mike /home/mike ** Changed in: lightdm (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1366209 Title: Returned to the greeter screen when logging in. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1366209/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs