Recently I switched from Ubuntu 16.10 to Ubuntu 17.04. Reading this news, Ubuntu 18.04 To Ship with GNOME Desktop, Not Unity, I decided to switch to gnome.
sudo apt-get install gnome-shell gnome
At this point all works fine and can start the session using gnome without problems.
But when try to switch to
gdm3 and reboot the system does not boot. Switching back to
lightdm and the system start ok. Im misssing something?