I don't really understand comment #17-#18 but it looks like nobody has successfully tested downgrading Mesa yet (per comment #13).
You may have to download and install the previous version manually: https://launchpad.net/ubuntu/+source/mesa/17.2.1-0ubuntu1/+build/13388627 That's the version which was in 17.10 until 5/6 October. ** Also affects: mesa (Ubuntu) Importance: Undecided Status: New ** Changed in: mesa (Ubuntu) Status: New => Incomplete -- 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/1723577 Title: Artful won't start with Wayland activated (AMD?) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1723577/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs