I am affected by the same bug, on Xubuntu Bionic. I only managed to log in by
dpkg-reconfigure to gdm3
to obtain a login manager
and then choosing Gnome session.
I only manage to get... 640x480, but at least it is graphical environment.
When trying anything else (lightdm as login manager or anything else like Xubuntu, Mate or Ubuntu DEs), only black screen.
I am affected by the same bug, on Xubuntu Bionic. I only managed to log in by
dpkg-reconfigure to gdm3
to obtain a login manager
and then choosing Gnome session.
I only manage to get... 640x480, but at least it is graphical environment.
When trying anything else (lightdm as login manager or anything else like Xubuntu, Mate or Ubuntu DEs), only black screen.