Try this as a workaround: edit /etc/gdm3/custom.conf and uncomment the line:
#WaylandEnable=false Then reboot. If that works then this would be a duplicate of bug 1798790. Even if it's not, the relevant bug filter to look at is: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bugs?field.tag=nvidia ** Tags added: nvidia ** Package changed: gnome-shell (Ubuntu) => gdm3 (Ubuntu) -- 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/1831514 Title: Ubuntu 19.04 system update causes boot failure Status in gnome-shell package in Ubuntu: Incomplete Bug description: *** *** Please reassign bug to proper package *** On Jun 3 2019, the system update corrupts the system. It will not boot. It hangs on the 3rd red dot of the Ubuntu splash screen. The remaining 2 dots are white. You never get the terminal screen with green [ ok] status lines. A complete new install works fine. When you do a system update, you get the corruption and boot failure. ProblemType: Bug DistroRelease: Ubuntu 19.04 Package: gedit 3.32.0-3 ProcVersionSignature: Ubuntu 5.0.0-13.14-generic 5.0.6 Uname: Linux 5.0.0-13-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.20.10-0ubuntu27 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Mon Jun 3 21:12:08 2019 InstallationDate: Installed on 2019-04-14 (50 days ago) InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Alpha amd64 (20190413.2) ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: gedit UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1831514/+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