@StonedEdge said in How to run RetroArch cores with DRI_PRIME=1?:

Are you sure about that? I believe we now have "/dev/dri/card0" for NPU and "/dev/dri/card1" for GPU, and have to specify that explicitly… not sure if that’s getting mixed up somehow when launching retroarch.

Yes. I think you're confusing some things here and your MESA/DRM libraries are most likely the issue here - not RetroArch.