Step-by-step – Nvidia Drivers Ubuntu 21.04 Installation

Installing

2. 2. Setting Up NVIDIA Repo

   How to Add NVIDIA Graphics and GPU Drivers Ubuntu 21.04 PPA Repo

   Adding NVIDIA PPA

   GNU/Linux Ubuntu 21.04 NVIDIA PPA Setup

3. 3. Installing NVIDIA Driver

   First, to Check for the Available NVIDIA Driver
   Simply run:

   sudo apt search nvidia-driver*

   Finally, to Install the Driver, for Instance do:

   sudo apt install nvidia-driver-550 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-550 nvidia-settings

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

   sudo reboot