Are you using automatic login or password login? ** Tags added: nvidia
** Changed in: gdm3 (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1849965 Title: I got stuck in a Login-Loop. The solution with the .Xauthority permission would not fix it. Next i read about a lightdm bug. Since new ubuntu is using not lightdm but gdm3 i sudo apt-get purge gdm3 . Then reinstalled. After that i could login successfully. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1849965/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs