With 18.04 the situation got worse. Apparently, the login screen tries to run now on Wayland as well, so the opportunity to turn it off is gone. Booting simply stops at the Ubuntu logo, with the first of these five dots filled.
Booting in recovery mode, then choosing 'continue'(?) gives a black screen most of the time, with some text blinking up shortly from time to time. Managed to catch it, see attached picture. The only way I could get this PC up running after the 18.04 upgrade was to boot into recovery mode, then get a root shell, then edit /etc/gdm3/custom.conf to remove the comment sign in front of WaylandEnable..., then reboot. ** Attachment added: "Screen photograph" https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1727356/+attachment/5134590/+files/DSCF1218.JPG -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1727356 Title: Wayland does not start up on "Integrated Graphics Chipset: Intel(R) G33": Shader compilation failed Status in GNOME Shell: Confirmed Status in gnome-shell package in Ubuntu: Triaged 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. --- ApportVersion: 2.20.7-0ubuntu3.1 Architecture: amd64 CurrentDesktop: ubuntu:GNOME DisplayManager: gdm3 DistroRelease: Ubuntu 17.10 InstallationDate: Installed on 2016-05-04 (539 days ago) InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1) Package: gnome-shell 3.26.1-0ubuntu5 PackageArchitecture: amd64 ProcVersionSignature: Ubuntu 4.13.0-16.19-generic 4.13.4 Tags: artful package-from-proposed third-party-packages Uname: Linux 4.13.0-16-generic x86_64 UpgradeStatus: Upgraded to artful on 2017-10-25 (0 days ago) UserGroups: adm cdrom dialout dip lpadmin plugdev sambashare sudo www-data _MarkForUpload: True To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-shell/+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