I installed 20.04 (upgraded from 18.04) and cannot log in at all. I’ve tried changing my password using recovery mode, installing lightdm, and using Ctrl–Alt–F3.
Strangely, when using Ctrl–Alt–F3, I can log in as root, but not into my personal account. Even after I change the password to my personal account using the command line in recovery mode, I can’t log in to my personal account. I can log in to root just fine.
I had a yubikey I would login with on 18.04, maybe that’s what’s wrong? I checked the pam.d files and they seem to have reverted back to their original state (I had to edit them to get the yubikey to work).
I am stuck and could use some help, thanks in advance!
Best Answer
Weird. Same problem, but Ctrl+Alt+F4 changed it to my logged-in desktop