I can play video on FB0 (video16) and overlay text using FB1 using a dedicated video player application. This works well but when I start X-Windows (system configuration GUI) the image looks like FB0 is still in YUV input mode and thus the image is stretched with the wrong colors. Also the console background is green. I don't have this problem when using video17 as the playback device but then the text overlay is not possible. Is there some way to reset the IPU? I suspect Video4linux doesn't clean up nicely.