I've added a comment to #136529. These lines do cause those errors, however they don't appear to be responsible for the login problems.
-- call to gdmflexiserver in /etc/gdm/PreSession/Default causes gtk setuid warning https://bugs.launchpad.net/bugs/152577 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
