It has been a while since I’ve had to deal with SELinux, here are a couple of resources that I found while getting back up to speed.
Just finished installing the latest LTS update “Bionic Beaver”. What prompted this is a ALSA update gone wrong in 16.04 which disabled the audio device on my laptop. Apparently this has been an issue going back to at least 12.04. I tried all of the “fixes” that I could find to no avail. A fresh install of 18.04 and restored all my data and all is well now. Kind of troubling for a known issue to persist for so long.