on macOS Big Sur, with Vega 56 egpu, Radion ProRender 3.0.8, Blender 2.90.1
When I try to render using the f12 key the image comes out completely grey, except for the outlines of the objects. I've tried rendering on the CPU and that works. I can do viewport render using the EGPU but I can't render to image using the EGPU.
i had the same in the beginning, then i click this "Trace Dump" under Debug and suddenly it rendered. It crashed first, but then it worked.