Recently did a fresh install moving up LTS versions to 20.04. All went fine, but now at the login screen, the keyboard is non-responsive except for CAPS. Mouse works fine, but even with on-screen keyboard, I cannot login as the Enter key won't work.
I've booted into Recovery Mode and reinstalled xserver-xorg-input-all, but nothing has worked. I need some ideas. The keyboard works fine from the terminal in Recovery Mode.
Also tried plugging in a USB keyboard, but it does not work either.
I'm on a Dell Latitude E7440, fwiw. Had no previous issues on 18.04.