20.04: No display found - can't change the driver

[Newhere]

Last time I had test-wise changed to Xorg driver just to see if the good colours come from the NVidia driver. (I used to use Xorg with 18.04 as the NVidia driver caused some issues 2 years ago). This morning, when I started the system, I can't change the driver. Everything looks like Windows in Safe mode.

[wolfman]

Hi,

see from " Manually adding your drivers via the terminal:" from the link below:

How to install graphics card drivers in Ubuntu

ATTENTION ATI/AMD GRAPHICS CARD OWNERS, IF YOU INTEND TO USE UBUNTU (MATE) 16.04, PLEASE READ THE FOLLOWING FIRST!. EDIT: POSSIBLE SOLUTION FOR SOME WHO HAVE AN AMD CARD ON THE LIST HERE: http://support.amd.com/en-us/kb-articles/Pages/AMD-Radeon-GPU-PRO-Linux-Beta-Driver–Release-Notes.aspx See also: https://support.amd.com/en-us/download/linux First and foremost, Intel drivers are auto installed and there is no reason to start to try installing any drivers for Intel graphics cards as the …

And:

Okay, I installed the wrong driver and now I can't boot/my graphics are shot!:

[Newhere]

Thanks, Wolfman, I will reinstall the system once more. It happenes on my desktop which is my guinea pig to make sure that the change on the laptop works without mistakes. It was already a lesson from 18.04 not to play around with the graphic card driver. Being in my second LTS round, I finally learned "never touch that part".