Hi Tom, it seems I am having a very similar issue like the post you just quoted. I have this “(the image is fine, just the sound that stops for a second or two, sometimes less, and then comes back)”. And then, eventually after a few minutes the full signal gets lost and i get only noise. It seems to be only a passthrough issue and disabling MMAL would not allow me to do passthrough so that fix won’t work to me. Will try to upload logs once I get home.
Regards.