Hey everybody, hope I can find some help for something that’s making me go insane. 

I have my Sonos Beam (GEN 2 - v81.1-58210) connected to my LG TV via eARC. This same TV is used as my computer monitor, running Windows 11. I currently have my sound settings like this:

It sounds great, works great, as long as there is sound running through Windows. However, whenever there’s a long enough idle, the next time any sound would be produced the Beam sounds like absolute constant loud garbage. Like TV and Radio static at full volume in a wood chipper. This will continue until I mute and unmute Windows. 

It does NOT happen when I disable Atmos or use any of the bit/Hz options in Windows. 

I couldn’t find much information about this except this post from a few years ago.

It helped to understand why it might happen, but simply reseating or power cycling isn’t a fix and hasn’t worked for me, and the OP never came back to confirm if it did for them either. 

So I’m making this post because I need help from smarter people to get this working as hoped AKA I want it to not lose its marbles at me WITH Atmos still enabled. The tech is cool, I’m hoping it can work as expected :(

Thank you for any help!

Oh P.S. I said “any sound would be produced” because even when there’s no sound coming through the system, a muted post on social media (Twitter is the worst about this) will force Windows to interpret sound where there is none, and then scream at me like it’s my fault. Cool stuff.