I’ve just updated to 18 and now my 5.1 movies are only outputting on my Sonos Arc is Stereo PCM. Atmos movies are still playing in Atmos. Is this a bug with the new software?
There's already a thread about this here: Apple Broke Dolby Digital 5.1 Output on A… - Apple Community
Summit feedback to Apple here:
I’ve just updated to tvOS18 and now my 5.1 movies are only outputting on my Sonos Arc is Stereo PCM. Atmos movies are still playing in Atmos. Is this a bug with the new software?
Just noticed the same thing. Only Atmos mixes play on surround sound. Every other one is played in stereo. Only app I’ve been able to get regular 5.1 from is Plex.
In case you're interested, Home Sharing still plays 5.1. That's funny, because what usually happens is that surround sound gets broken for Home Sharing only.
Apple TV 18 has broken 5.1
