The host even shows up in the list of my computers fine after boot, even though the computer still shows the login screen, so there's no one logged in at that moment. If I go to that machine (i.e. physically in front of it, not through TV) and log in there, i.e. pass the Mint login screen, I can then use Teamviewer on my remote machine to connect to it. If however I have noone on premise to log in to the host machine and simply click on the host in my list of computers, my Teamviewer Client shows an error "waitforconnectfailed" and the host vanishes from the list of computers.