I'm a beginner to Ubuntu/Linux and I have a problem: Unity is not loading! When I choose Unity in the log-in screen, I get notifications and I can see the mouse, but that's it.

I have Ubuntu 14.04 installed, along with Bumblebee/Primus. I had no issues whatsoever, until I decided to try the numix-theme and the numix icon pack. I added the PPA and installed it, but when I logged off and logged back on, nothing showed up. I panicked, and in tty1, I purged numix-* but that did not solve the issue.

To get by day-to-day use, I installed gnome-flashback, and among those environments, only the metacity one works. (The compiz one does not.) I've tried installing the unity-tweak-tool to reset unit, installing dconf and doing:

dconf reset -f /org/compiz/

but that didn't work either. One site even told me to delete /org/compiz/, but that did not resolve the issue.

When I checked ccsm, the Unity plugin had a check to it.

I also tried with Unity doesn't load, no Launcher, no Dash appears, but it gets stuck on "loading icons".

Any help will be awesome!