Spent several hours trying to upgrade my Ubuntu installation from 15 up to the latest 17. The upgrade didn’t fail, but I did see a few error messages, and now I have applications failing to start for various reasons, including the settings applet; and when I install or use my nvidia drivers, ubuntu doesn’t start up properly until I do

apt-get purge nvidia*

But removing all the nvidia stuff causes it to fallback to nouveau which for the most part works, but not exactly good for any linux gaming.

Looks like it’s going to be a full-reinstall job to make sure everything is clean :(