I've just completed a fresh install of 18.04. An install of NVDIA drivers failed and now my resolution is 1024x768. I've attempted to go to a tty so I can install the drivers without the console running. However using CTl-ALT-F3 or F4 just bings me to a black screen with no prompt. I can get back to the GUI by using CTL-ALT-F2.
What can I do to get to a tty?