I ran into this upgrading from 17.04 to 17.10 on an X1 Carbon 3rd Gen (Intel HD Graphics 5500). Inspired by reading Mentis's comment. This fixed it for me:
apt purge gdm gdm3 apt install gdm3 ubuntu-desktop (reinstalling ubuntu-desktop which got removed in the last step) Then running `systemctl restart gdm` got gdm3 to start successfully. Is it possible lingering config files from gdm (version 2?) are conflicting with gdm3 on some upgraded machines? -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm3 in Ubuntu. https://bugs.launchpad.net/bugs/1715811 Title: GDM crash loop Ubuntu 17.10 (Intel) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1715811/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs