GNU/Linux Debian Bullseye Installing NVIDIA GeForce RTX 3070 Driver
How to Install NVIDIA GeForce RTX 3070 Graphics Driver on Debian Bullseye 11.x desktop.
The NVIDIA RTX 3070 Debian 11 Driver Setup is a breeze, requiring just a few straightforward Shell Commands to complete.
Especially relevant: following the NVIDIA Recommendations is Recommended to use the NVIDIA Linux Graphics Driver from the Debian Packages Repository.
Finally, with the nvidia-settings Tool you can configure Brightness, Gamma, XVideo attributes, Temperature, and OpenGL.

1. Launching Terminal
Open a Shell Terminal emulator window
(Press “Enter” to Execute Commands)
Contents