Ok, I was running Ubunto Stretch on my Pi 3 and for some reason, I quit getting sound when running UI3 in the browser (sound works with everything else in the browser). Knowing that my version of Ubunto was old, I figured I'd just go to the latest Pi version and see if that, alone, would fix the sound. Many hours later (slow slow slow connection) and it was up and running. Yep, sound works.
Now I have a new problem (maybe an older one too, but the last I looked it was ok). When I select a cam to go full frame, it always full frames the wrong cam. I've tried everything I can think with no good results. This works correctly on my three tablets and our computers, so... I must be missing something with Ubunto. Can anyone running linux give me a clue?