Happened to me this morning as well on 32 bit. Worth noting that you can still log in under the other users if you manually enter their username and pass
-- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm in Ubuntu. https://bugs.launchpad.net/bugs/783130 Title: Missing users on Ubuntu login screen -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs