RTX4090 black screen, forced to use external screen to see something

The post Nvidia drivers dual screen Debian 12 - #2 by nael.embarki34 helped me:

  • init 3
  • sudo nvidia-xconfig --prime
  • sudo yum install xrandr
  • reboot
  • xrandr --setprovideroutputsource modesetting NVIDIA-0
  • xrandr --auto

Now i have dual screen working