Thanks for the help, @Brian. I thought about the package 'wayland', too, but trying to report a bug against it came out like this:
$ ubuntu-bug wayland dpkg-query: no packages found matching wayland -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to wayland in Ubuntu. https://bugs.launchpad.net/bugs/1727356 Title: Wayland does not start up Status in wayland package in Ubuntu: New Bug description: $ lsb_release -rd Description: Ubuntu 17.10 Release: 17.10 Upgraded from 17.04 today. Steps to reproduce: - Start the PC or log out/end session in case it's running with an Xorg desktop already. - Attempt to log in, using 'Ubuntu' Expected to happen: Desktop appears. Actually happening: 5 seconds of black screen, then the login screen appears again. Partial diagnosis: - Logging in using 'Ubuntu on Xorg' works fine and as expected. - Extracted a syslog of such a failed attempt, see attached file. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/wayland/+bug/1727356/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
