OK, i've managed to get them installed, but i'm not 100% clear how I actually did this and why it actually worked. Hopefully someone can help explain.
Here's what I ran as commands to get this working;
sudo add-apt-repository ppa:graphics-drivers
sudo apt-get update
sudo apt-get install nvidia-graphics-drivers-396
sudo ubuntu-drivers autoinstall
- (i think...) *
So, now this is working. Why did it work, how did it work, why, how?
The above is from a few hours of researching/testing/experimenting. Seems to work, but I'd love to know why it works... I can't seem to find any useful information online about how all these pieces of the puzzle fit together.
Any ideas?