I was able to pinpoint my problem as well as a workaround: https://bugs.launchpad.net/ubuntu/+source/gnome-session/+bug/1845801
`splash` needs to be removed from grub options: edit `/etc/default/grub`, remove `splash`, then sudo update-grub -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1872123 Title: [20.04] X session fails to start on 440 and kernel 5.4.0-21 (but 5.4.0-18 works) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-440/+bug/1872123/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
