Step-by-step – Nvidia Driver 390 Debian Stretch Installation

Installing

2. 2. Setting Up Backports

   How to Install Backports Repository on Debian GNU/Linux

   Backports Debian Buster/Stretch Setup Guide

   GNU/Linux Debian Buster/Stretch Backports Installation Guide

   Follow instructions to Enable the ‘contrib‘ and ‘non-free‘ Sources.

3. 3. Installing NVIDIA Driver 390

   Then to Install NVIDIA Driver 390 Debian 9 Driver
   Possibly now see How to Check NVIDIA Graphics Card Model Supported Drivers.
   And again before Setting it up you may Verify which is the Minimum Driver version to Support your Card on: NVIDIA Driver support Website!
   Now to Setup it play:

   sudo apt install nvidia-driver nvidia-settings

   Authenticate with the User Admin Pass.
   If some Issues then See the Readme file on Bottom…
   And Possibly to Configure the X Server after Setup run:

   nvidia-xconfig

   Last, to Load your barely New Graphics Driver Reboot with:

   sudo reboot