GNU/Linux Debian Bullseye Installing NVIDIA GeForce RTX 3090 Driver Guide
How to Install NVIDIA GeForce RTX 3090 Graphics Driver in GNU/Linux Debian Bullseye 11.x GNU/Linux desktop – Step by step Tutorial.
The NVIDIA GeForce RTX 3090 Driver Debian Bullseye Setup is a breeze, requiring just a few straightforward Shell Commands to complete.
Most noteworthy: currently the needed NVIDIA 455+ Driver is Not in any Debian Release Repo so here we provide to the Proprietary Linux Driver Setup.
Finally, with the nvidia-settings Tool you can configure Brightness, Gamma, XVideo attributes, Temperature, and OpenGL.
How to Install Latest NVIDIA 455+ Driver on Debian
Install the Latest NVIDIA Graphics Drivers from Apt Repos Guide
Or else try to Setup the Generic NVIDIA Linux Driver:
Download & Install NVIDIA Proprietary Driver Guide