Required by nvidia-prime.

Enabling modeset

Add to kernel parameters :

nvidia-drm.modeset=1

Or uncomment this option in

# Kernel Mode Setting (notably needed for EGLStream/Wayland)
# Enabling may possibly cause issues with SLI and Reverse PRIME.
options nvidia-drm modeset=1

Checking that modeset is active

# cat /sys/module/nvidia_drm/parameters/modeset
Y
  1. https://wiki.archlinux.org/title/Kernel_parameters
  2. https://wiki.gentoo.org/wiki/Hybrid_graphics
  3. https://wiki.archlinux.org/title/PRIME
  4. https://forums.developer.nvidia.com/t/understanding-nvidia-drm-modeset-1-nvidia-linux-driver-modesetting/204068/3