I have an Arc/ 2 One speakers/Subwoofer system with Apple 4K TV streaming device; Sony A8H TV. The Apple TV is connected via the Sony’s E-arc port. I’m having an issue where the Apple TV sometimes doesn’t turn on the Sonos system along with the TV on startup, and an issue where the Sonos system goes into solid green status light mute mode after the Apple TV tries to shut down the TV/Sonos system. (Others in this community have posted about this problem in the past.)
I went into the Sonos app on my phone and under System>TV SetUp toggled off Use IR. I think was was happening was the Apple TV was trying to turn the Sonos system off and on while the Apple TV remote was sending duplicate/conflicting or lagging IR signals to the Arc. Hopefully, with the Sonos IR recognition shut off, the Sonos system will receive instruction only from the Apple TV itself, and resolve my issue.
I’ll keep everyone posted.