Issues and solutions

Ubuntu 18.04.02 + Cuda 10.1 - Blank screen right after login. Unable to switch tty's.

https://askubuntu.com/questions/1128354/black-screen-after-updating-to-cuda-10-1-on-ubuntu-18-04-2

Solution was to first, separately install nvidia driver (418.56), then Cuda (10.1), not installing driver - option is present when installing from .run file. Cuda installation included a 418.3x driver version which created above problem.