I've returned to FreeBSD after many years, and I just built 14.0 to get CUDA working. CUDA doesn't need this to run AFAIK. This is about the kernel providing a module that allows a direct rendering interface. CUDA doesn't render to the screen. IIRC, DRI/drm are kernel drivers for graphics that map the GPU video memory window into your process so you don't have to copy data or send it though a pipe or some such nonsense. it was a video optimization from the early days of Linux graphics when copying
Long time FreeBSD'r myself going back to 2.2 and this has been the sticking point of the last couple of years for my org. Everything seems to depend on CUDA these days!
