This seems to have fixed the problem for me:
sudo systemctl disable lightdm sudo systemctl stop lightdm sudo systemctl enable gdm #Seems to fail sudo systemctl start gdm sudo dpkg-reconfigure gdm3 #Shows lightdm selected select gdm3, push enter
Reboot
This seems to have fixed the problem for me:
sudo systemctl disable lightdm
sudo systemctl stop lightdm
sudo systemctl enable gdm #Seems to fail
sudo systemctl start gdm
sudo dpkg-reconfigure gdm3 #Shows lightdm selected
select gdm3, push enter
Reboot