I’ve just recently installed a Sonos Arc with eArc from a Samsung TV. I’ve noticed while I am watching video from a FireStick 4K Max, occasionally (seemingly randomly), the Arc will turn on or off the microphone. I haven’t noticed this happen while watching cable TV or through other HDMI sources (blue-ray, etc).

I haven’t been able to narrow down any more details around when this happens other than it seems to be randomly and only with the Firestick input. I haven’t found anything similar on searches, but has anyone else experienced similar or how to get this to stop? I’m not using Alex or any other voice services other than Sonos Voice Control.