I can reliably reproduce in an up-to-date artful VM. In my default session, GDMSESSION=ubuntu. If I then uncomment WaylandEnable=false in /etc/gdm3/custom.conf and reboot, the session selected by default is gnome-xorg instead of being ubuntu-xorg.
** Changed in: gdm3 (Ubuntu) Status: New => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1718446 Title: Ensure wayland -> xorg fallback to the corresponding session To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1718446/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs