Posted January 21, 2020
I take it back that the open source drivers are just as good as NVidia's. The latter do give considerably better performance for games (I tested again Team Fortress 2, and Two Worlds running in Wine). Other than the performance (gaming), the open source drivers work nicely though, even having fixed the brightness issue I had.
If I switch to NVidia's drivers in the Driver Manager, the same problem happens and I start getting package errors etc., even though I've run e.g.
sudo apt purge nvidia*
sudo apt autoclean
sudo apt autoremove
sudo apt update
sudo apt upgrade
sudo apt install -f (this never seems to work...)
probably something else too...
Something is rotten in the state of NVidia...