I'm running Ubuntu 14.04 on the new Dell XPS13. I never needed a login, I was just able to boot and my desktop would show up. It doesn't anymore; I can still switch to TTY to get work done.
What did I do? I uninstalled/purged/autoremoved Google Chrome, the laptop then froze. After I cut the power and restarted it was like this.
I did not install Nvidia drivers (I did after it was broken to try and fix my laptop). I have uninstalled Ubuntu desktop using Tasksel, but I do still have a graphical Ubuntu start for a couple of seconds. Very weird.
I've uninstalled nearly everything using tasksel (except the printserver and tomcat - which I can't uninstall aptitude failed 100.
Any help would be greatly appreciated.
EDIT: i did apt-get update to try and fix the aptitude problem, which didn't help.