I first install Ubuntu 13.10 a few weeks ago and its been going great. I'm still pretty new to Linux, so I haven't been doing a whole lot. The past couple days I've tried installing LAMP, then uninstalled it because I would probably never do anything with it. I then installed SSH, then uninstalled it because I probably would never login to it remotely. Then I install samba so my wife could access the files on my computer from hers and use my PC as a backup.

All is fine and well... until I reboot. I am unable to login. I type my password into the password field, and hit enter and nothing happens. If I type the wrong password in, the little wheel spins for 1/2 second then says 'incorrect password'. With the incorrect password, no wheel shows up - the password field fades away and the screen just sits there. I've waited about 10-15 minutes for something to happen, but nothing does.

I've tried to Google around to solve the issue, but nothing I've seen seems to do the trick. I am able to login through the command line (ctrl-alt-f1) just fine, just am not able to login in through the GUI.

Ive looked at my auth.log and found this:

lightdm: pam_succeed_if (lightdm:auth): requirement "user ingroup nopasswdlogin" not met by user "andrew"

I remember seeing something about pam when I was installing/configuring ssh and/or configuring keys for it, but I don't remember specifically what. Plus, I removed ssh shortly after I installed it - so could it still be causing an issue?

I've tried the following:

sudo dpkg-reconfigure lightdm

which says nothing and returns me back to the command prompt

I have tried removing ~/.Xauthority - which didn't help.

My .dmrc file is about four lines. The first two are blank, then [Desktop], then something=Ubuntu

I have tried:

pam-auth-update

everything is checked, doesn't help

and I've tried:

ppa-purge ppa:gnome3-team/gnome3

which doesn't help either.

I've tried renaming my home directory and creating a new one. No luck.

I'm at a loss of what else I can do. Any ideas?