I had *successfully* installed `NVIDIA-Linux-x86_64-302.07.run` from the nVidia website. That got me nothing but an unalterable 640x480 screen. `purge` and `autoremove` didn't seem to undo it. 

I attempted, via Ubuntu Software Center, to *reinstall* `nvidia-common`(295.40-0ubuntu1.1), but that doesn't get me anywhere either. `unity --reset` doesn't help (Compiz errs).

Is there anything, short of wipe/reinstall of 12.04, that I could try?