Ubuntu 18.10 login screen never appears when using the Nvidia driver
The boot process hangs with the last message being "started bpfilter". There is unusual Network activity during that time. The light of the WiFi adapter is blinking a lot. The specific steps or actions you took that caused you to encounter the problem: 1. Boot Ubuntu 18.10 with the Nvidia proprietary drivers installed.
The behavior you expected: I expected Ubuntu 18.10 to boot normally.
The behavior you actually encountered: The computer gets stuck in a command-like environment with the last message being "started bpfilter". You can't type any commands.
I have found that uninstalling the Nvidia proprietary drivers by going into recovery mode fixes the issue.
This was originally reported here: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1798790