Daniel, Thanks for your help, I've report a new one.
https://gitlab.gnome.org/GNOME/mutter/issues/219 -- 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/1780076 Title: 18.04 login screen is skewed/distorted (incorrect stride) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1780076/+subscriptions -- desktop-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
