I just upgraded to nvidia-378 and re-installed xserver-xorg-legacy and finally got GDM working again.
I'll keep lightdm installed just in case it all stops working again.
I don't know/remember if this happend while I was fiddling around getting GDM to work. But in /etc/gdm3/custom.conf I had the following line active and it was running havok with GDM opening in different tty every boot an delaying boot time. So make sure to comment out the following line:
Thanks to #100 I got GDM working again.
I just upgraded to nvidia-378 and re-installed xserver-xorg-legacy and finally got GDM working again.
I'll keep lightdm installed just in case it all stops working again.
I don't know/remember if this happend while I was fiddling around getting GDM to work. But in /etc/gdm3/ custom. conf I had the following line active and it was running havok with GDM opening in different tty every boot an delaying boot time. So make sure to comment out the following line:
#AutomaticLogin Enable= True