Not able to login on Gnome Desktop

Question

I am unable to login on Ubuntu 18.04 gnome desktop. I can login with Ctrl+Alt+F2 or F3.

• First tried

  sudo apt-get update    
  sudo apt-get dist-upgrade
  

• Then I deleted ~/.local

• Then I reinstalled Ubuntu desktop and session as suggested in Login problem on 18.04 but there was no .Xauthority in my home directory.

• Also renamed .config

Nothing helped.