nicholaicheck

That's got it. Thank you very much! I should probably learn to get over my fear of command line. Too much time with Windows...

I think it was installing one of the required packages/dependencies. Edit: And now it may or may not be prohibiting a new Kernel install. I can't tell; I'm inexperienced. What rabbit hole did I fall down?

Ok so I copy-pasted the terminal commands, let Mint do its thing, then went into Software Manager and tried to uninstall FAHClient and FAHControl. I say tried because I'm not sure they were uninstalled; the status bar at the bottom of the Software Manager didn't reach 100% for either, and FAHClient was still showing in search results when I searched for "FAH". I went here and installed FAHClient ok, but FAHControl said it needed to install 6 packages and gave me this error. What am I doing wrong?

I'm running a Thinkpad T430 with NVidia NVS 5400M and Linux Mint 18.1. Install instructions for Linux say to install FAHClient, FAHControl and FAHViewer. According to the Package Installer, FaH Client, FaH Viewer , and the CUDA toolkit for Ubuntu 16.04 were already installed, but when I went to install FaHControl it gave me this error. I would assume it's also already installed, but the only FaH entry I see in the Mint Cinnamon Menu is the "FAHViewer"; FAHControl isn't shown, and I can't find it. How can I make sure FAHControl is on my machine, or install it if it's not?