Not sure if it was a bug or not. But everything is restored to normal behaviour after GDM reinstallation.
-- GDM fails to authenticate pre-existent users. https://bugs.launchpad.net/bugs/432492 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