Another thought is that there was a gdm3 update on 12 June that might have taken a couple of days to reach you. If that has caused the problem then it would be a good idea to try downloading and reinstalling the prior version's files from here:
https://launchpad.net/ubuntu/+source/gdm3/3.28.0-0ubuntu1/+build/14516225 Download the .deb files from there, then install them manually by running: dpkg -i *.deb -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1777378 Title: GDM no longer presents GUI login Ubuntu 18.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1777378/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs