NVIDIA Rtx 2080 Ti Driver Installation in Ubuntu 20.04

Installing

2. 2. Setting Up NVIDIA GeForce RTX 2080 Ti Driver Repo

   How to Add NVIDIA Graphics and GPU Drivers Ubuntu PPA Repo

   Adding NVIDIA PPA

   GNU/Linux Ubuntu NVIDIA PPA Setup

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

3. 3. Installing NVIDIA GeForce RTX 2080 Ti Driver

   Then Check for the Available NVIDIA Driver
   Simply run:

   sudo apt search nvidia-driver*

   Take Note of the latest suitable Driver Release EG: 555.
   And the latest may be just good for this Card… But to make sure if your Card is supported then search in the NVIDIA Driver support Website.
   Finally, to Install the 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