Teamviewer kills my Ubuntu box

After upgrading my Ubuntu to version 18.04 LTS I installed TV 13. Now when starting TV on the box, I see an empty splash screen for the TV License and then the monitor goes dark and the box freezes requiring a reboot. I have spent 3 days googling for solutions both here and elsewhere but none of the suggestions I have tried have changed anything. Anybody else have the same problem? My Ubuntu box is an old Dell D600 that worked fine with Unbuntu 14 and an earlier version of TV (I don't remember which version). Please help. I forgot to add, one of the suggestions I tried allowed me to remotely find the TV ID, set a passwd and set TV to start automatically using SSH. After that, the box would freeze as soon as TV would try to start and I had to purge TV completely.