It seems like Ubuntu now freezes when I try to switch to a TTY when auto-login is enabled and has failed. This also happens with systemd 242 now though, so it must be some unrelated change. I got the log though, thanks to journalctl saving logs from previous boots, and attached failedlogin2.txt.
Interestingly, when booting from recovery mode, when just resuming normal boot from the recovery menu, auto login works perfectly. After that, I tried messing with grub options, and when I remove "splash" from the linux cmdline, auto login works perfectly. I assume then that this issue is related to how the GPU is initialized during early boot to show the splash screen? (For the record, I tried to set my cmdline to "quiet splash nomodeset", and it had no effect.) ** Attachment added: "output of journalctl -b <boot ID> where login failed while running systemd 243" https://bugs.launchpad.net/ubuntu/+source/gnome-session/+bug/1845801/+attachment/5303124/+files/failedlogin2.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1845801 Title: [nvidia] Automatic login fails and then all subsequent logins fail. Killing gnome-session-binary fixes it, or just not using automatic login. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1845801/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs