I have read yours posts here https://forums.opensuse.org/t/how-to-switch-to-the-nvidia-dgpu-in-tumbleweed/175576/10
And in one post you say : add the kernel option nosimplefb=
Is it this helping ?
In the bios, my display is set to DYNAMIC (and not iGPU)
In the bios, i see the AMD GPU and clickin on it, i see the NVIDIA card but can’t select one of them to make NVIDIA to be first.
The order is AMDU in first and NVIDIA in second.