After today’s (22/12/2021) system update Sonos stopped playing Dolby atmos contents from Apple TV 4K. It plays other audio formats automatically like stereo Dolby digital 5.1 multichannel pcm 5.1 or 7.1.
It shows audio as silence.
If I change the audio format to Dolby digital on Apple TV 4K in settings then it plays the content. Before this recent update Sonos was able to play the Dolby atmos contents from the Netflix on Apple TV or original Apple TV contents.
Best answer by GuitarSuperstar
Try unplugging the Arc and TV from power for a couple of minutes and reboot the Apple TV.
What update are you speaking of? Neither Sonos nor Apple released an update today.
I recevied the system update for Sonos arc when opened the Sonos S2 app. After update I restarted the system, then it stopped playing the Dolby atmos contents from Apple TV 4K.
Try unplugging the Arc and TV from power for a couple of minutes and reboot the Apple TV.
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