said by Snakeoil:
How can I tell if I am using lightdm vs gdm? One of those prevents the GUI for launching. Instead I get the console.
If gdm is not in /etc/init.d/ then you are not using gdm. If both show up then I'm not sure how to tell. You could always run `sudo stop gdm && sudo start lightdm` which should guaruntee you are in lightdm and not gdm.