In my system I had the same problem. The problem was caused because an upgrade had revoked public write permission to my /tmp directory.
I fixed it with: sudo chmod a+w /tmp; sudo chmod o+t /tmp -- Can't log in after upgrading https://bugs.launchpad.net/bugs/136529 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
