It would be useful to find out why gdm3 works for you but lightdm does not. It might be because gdm3 defaults to Wayland not Xorg, or it might be a difference in the greeter/login screen itself. To find out, please try editing /etc/gdm3/custom.conf and change:
It would be useful to find out why gdm3 works for you but lightdm does not. It might be because gdm3 defaults to Wayland not Xorg, or it might be a difference in the greeter/login screen itself. To find out, please try editing /etc/gdm3/ custom. conf and change:
#WaylandEnabl e=false
to
WaylandEnable =false
then reboot.
Does gdm3 still work now it's using Xorg?