The login on my Ubuntu 20.04 suddenly stopped working. After entering the password, it get stuck at a purple screen with the mouse pointer. This is not a fresh install and it was working ok until past boot.
I installed the ubuntu-gnome-desktop package (from what I searched on the internet the display manager is often the problem in this case) and was able to login selecting the GNOME option on the login screen. It does not work with GNOME (on Xorg), however. I think the default Ubuntu option (instead of GNOME) also uses Xorg, so I think the problem is within Xorg.
I tried sudo apt-get install --reinstall xserver-xorg and sudo apt-get install --reinstall xauth but that didn't solve the problem.
Most of the existing answers suggest installing another display manager (Ubuntu gets stuck in a login loop), which I'm trying to avoid because I really like using the default interface. Whereas others have problems with Nvidia drivers (Login loop after installing 20.04), which is also not my case because I only have an intel onboard video card.
I know that's an often question but I could not find a solution for this in Ubuntu 20.04. Any suggestions to solve this (apparent) Xorg problem? I'm not very experienced with that so I might be missing something simple here.
Thank you in advance.
