This is guide howto install NVIDIA proprietary Linux drivers (manually using .run files) and disable Nouveau driver on Linux Mint 21.3 / 21.2 / 20.3. Linux Kernel 5.15+ is tested. Currently working NVIDIA drivers are: - 550.xx (550.78) - 535.xx (535.171.04) - 470.xx (470.239.06) - 390.xx (390.157) - 340.xx (340.108) This guide works with NVIDIA GeForce 6/7/8/9/200/300/400/500/600/700/800/900/10/20/30/40 series cards. This method allow you easily install / test / use different versions of NVIDIA drivers, you can test BETA drivers and switch back to stable. I use here KDE, but also GNOME and other desktops works very smoothly with latest NVIDIA 550.xx / 545.xx / 535.xx / 525.xx / 470.xx drivers. I have tested this guide with NVIDIA 470.xx, 535.xx, 545.xx, 550.xx drivers/cards on latest Linux Mint 21.3 / 21.2 and 20.3. Here I use 545.29.06 NFB version of NVIDIA drivers installer, you can always select latest stable version, beta or some other version. If you need patched version, please check following video to see, howto use inttf NVIDIA Patcher Script: https://www.youtube.com/watch?v=9m972Op8BWU If you want to enable NVIDIA + Wayland, check following video: https://www.youtube.com/watch?v=uX_c9z9CEL4 If you see black screen then check following video: https://www.youtube.com/watch?v=3vcOqqSS8xc Check full install guide with commands from: https://www.if-not-true-then-false.com/2021/debian-ubuntu-linux-mint-nvidia-guide/