Hint: check the orientation of your cable! Hi guys, I also came here after purchasing a cheap orangepione + camera, had the same error dmesg but all the GPIO magic did not work for me. Then I checked the camera connection and the cable end at the camera board was flipped - it came pre-assembled and I assumed it was right, but it wasn't. Google with image search and verify your cable connection. My cable had blue markers, they are facing up now (before it was flipped at the camera side). hope it helps.