I had the same bug. Well, at least the same symptoms: being able to log in with gdm, but lightdm giving a black screen for a few seconds, then autoclosing and going back to the login screen, whatever the session selected in lightdm.
Trying to investigate, i looked into .xsession-errors but it was empty so not giving any clue. I'd suggest to look at /var/log/lightdm/. It appears my /etc/lightdm/lightdm.conf had some troublesome entries (like session-setup-script=...) which would cause lightdm to crash without telling why. Restoring default /etc/lightdm/lightdm.conf fixed it for me. bug in #23 ( https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/951404/comments/23 ) looks totally different, and it would be better to open another bug report for this one. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/951404 Title: Ubuntu 12.04 session don't open with lightdm To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/951404/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
