I have seen the same. What solved it for me was purging gdm and reinstalling it, this indicates that there is indeed something wrong with the conffiles ( dpkg --purge --force-depends gdm gdm-guest-session )
-- pam_unix(gdm:auth): conversation failed https://bugs.launchpad.net/bugs/516520 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
