Thanks Eugene, that finally solved it for me. Happened when I upgraded my Intel-only system to Bionic just now.
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to libglvnd in Ubuntu. https://bugs.launchpad.net/bugs/1751414 Title: [regression] Missing Wayland login option and missing GL acceleration, after installing libegl1 Status in libglvnd package in Ubuntu: Fix Released Status in mesa-demos package in Ubuntu: Invalid Status in mir package in Ubuntu: Invalid Status in mutter package in Ubuntu: Invalid Bug description: I just updated bionic and suddenly: * No 'Ubuntu on Wayland' login option. * The 'Ubuntu' login option is very slow -- glxinfo reports LLVMpipe (software rendering) ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: gnome-shell 3.26.2-0ubuntu3 ProcVersionSignature: Ubuntu 4.15.0-10.11-generic 4.15.3 Uname: Linux 4.15.0-10-generic x86_64 ApportVersion: 2.20.8-0ubuntu10 Architecture: amd64 Date: Sat Feb 24 13:59:46 2018 DisplayManager: gdm3 InstallationDate: Installed on 2017-12-12 (73 days ago) InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Alpha amd64 (20171211) SourcePackage: gnome-shell UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libglvnd/+bug/1751414/+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
