My Ubuntu 18.04.2 system is working OK except for the following problem:
I cannot seem to be able to login on any of the virtual terminals (Ctrl+Alt+F1 to F6. Specifically, I can type my username fine, and the keyboard works without a problem, no unusual behaviour, until I press Return (or Enter on the keypad).
At that point, the password prompt appears but immediately it is as if Return is pressed again, so entering a blank password and giving Login incorrect. The login prompt reappears but again it is as if Return is immediately pressed, again giving Login incorrect. The repeats a few more times until the screen clears and the login prompt shows again. Now Return does not keep repeating.
Any ideas? The Return key is working no problem in graphical mode.