Searching nvidia.com for that GPU seems to recommend installing driver '430.50'. So please try:
sudo apt install nvidia-driver-430
At present that will give you 430.26 but version 430.50 is in bionic-proposed so will come in a future update for Ubuntu 18.04, soonish.
Searching nvidia.com for that GPU seems to recommend installing driver '430.50'. So please try:
sudo apt install nvidia-driver-430
At present that will give you 430.26 but version 430.50 is in bionic-proposed so will come in a future update for Ubuntu 18.04, soonish.