The update from 13.10 to 14.04 using do-release-upgrade seems to have added lightdm to my computer. On top of that, lightdm wasn’t even set up properly, nor do I want it set up. I prefer not to use graphical login, and to start with server edition and install only things I want on my desktop, just out of preference.
I got to a console and tried apt-get removing lightdm, which made gdm install. Attempting to remove gdm tries to make kdm install and nvidia-prime remove. How do I get things back to the way they were before? I’ve upgraded three times before this without problem.