GeForce Rtx 4080 Ubuntu 20.04 Driver Installation – Step-by-step

How to Install

2. 2. Setting Up NVIDIA Driver Repo

   How to Add NVIDIA Graphics and GPU Drivers Linux Ubuntu PPA Repo

   Adding NVIDIA PPA

   GNU/Linux Ubuntu 20.04 NVIDIA PPA Setup

   Possibly now see How to Check NVIDIA Graphics Card Model Supported Drivers.

3. 3. Installing RTX 4080 Driver

   Then Check for the Available NVIDIA Driver
   Simply run:

   apt search nvidia-driver*

   Take Note of the Latest Driver Release EG: 555.
   But before Setting it up it’s recommended you Verify what is the Drivers Range to Support your Card on: NVIDIA Driver support Website!
   And when in doubt then see also How to Check NVIDIA Graphics Card Model Supported Drivers.
   Next to Install the latest Driver, for Instance do:

   sudo apt install nvidia-driver-555 nvidia-settings

   And in case of Issue try instead with the more powerful aptitude Package Installer.
   So first, to Install Aptitude run:

   sudo apt install aptitude

   And next try the Setup again playing:

   sudo aptitude install nvidia-driver-555 nvidia-settings

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

   sudo reboot now