So Firefox, not using GBM but EGL, would not be able to make use of the proprietary driver and has to talk to DRM? Can two kernel modules even use the same card at the same time?
> Can two kernel modules even use the same card at the same time?
yes, I'm not sure how everything is divvied up. NVIDIA ships multiple kernel modules in their driver, and one of them is called ‘nvidia_drm’. So idk, maybe you have to use their DRM implementation or something