Sonos Arc loud pop then audio loss

For me it did not help, unfortunately. 10 Minutes in on Xbox got the pop in the menu.

Bummer. Just Compressed Audio set to uncompressed? Or did you also remove Alexa?

Just Audio uncompressed. I don’t use Alexa.

😵‍💫 mine is working properly… mmm very strange issue…

I am also here to report the pop 🤦‍♂️.  New sonos user.  Sony xf900 with arc, sub,1’s for surrounds.  Xbox user.  Popping has got really bad.  Multiple times a session.  I had to change audio to 5.1 because it doesn’t happen with that setting.  Boo sonos!  This issue should be resolved,  this thread was created 2 years ago! 

Fairly new sonos user, I've had an arc work flawlessly for two months using Disney plus, Amazon prime video and just standard Freeview viewing. Decided to dust off the old Xbox one s to give it a run out along with enabling dolby Atmos, less than an hour later - pop! I nearly fell off my chair it was so loud. I was convinced with a sound like the there must have been some damage done to the arc. This was followed by silence and I'm sure I saw a flash off orange/red on the top of the arc for a moment. 

I submitted by diagnostic number via the Sonos live chat but apparently all looks good from what they can tell! It seems likes it's working fine again for my usual TV viewing but I will be following the advice from previous contributers to this thread and change the sound to Dolby 5.1 on the Xbox. Although I am reluctant to load up the Xbox for the time being. 

there was a mentally loud pop when I was in the xbox menu and pressed the glowing x in the middle of the pad.  Turning off the automatic selection of the signal input on the tv when we press this button helped

Professor, I’m gathering your comment is aimed at my personal experience in which turning off Dolby vision on the Xbox has in fact solved my popping issue.  I have been more than two months pop free with it off.  I even tried turning it back on to which the popping started again just to make sure it was that feature which was causing the issues for me

This leads me to believe it is one of the other pieces of the chain then.  The two that come to mind are

1.  Passthrough configuration of your TV. My TV is a LG C1
2. HDMI cables both from the Xbox to the TV and the TV to the ARC.  I use the supplied cable from the Xbox to the TV and certified HDMI 2.1 cable to the ARC

Are any of these different in your setup?

1. My TV is a Sony 900H. I am away from my TV right now so I can’t look up the exact name of the setting, but I’ve tried on and off for the “bitstream” passthrough setting on the TV. 
    
2. I use the supplied cables for Xbox and Arc. I’ve also tried switching the Arc cable for an optical HDMI cable, thereby I traducing an additional physical layer signal conversion (electric → optical → electric) to no effect. 

As I mentioned, if I turn off DV and content matching on my Apple TV, it seems to get rid of the pop and returns when I turn it back on. Doing the same on the Xbox does not. 

I think we must all admit that DV having any effect in any setting is strange since it’s not an audio setting to begin with. I think it’s just as likely that whatever bug the Arc has is a subtle interaction in its code and DV happens to only sometimes touch it. Could be something as obscure as where items are in memory on the Arc. Some pointer is dereferenced badly, or a buffer overflows, or a variable is having its type changed wrongly; and it just happens to go into memory where it shouldn’t and whatever DV thing happens to live in that memory either has a popping value in it or it doesn’t.

In other words, I would caution you against taking just your experience (n=1) and generalizing from it what the problem or solution is. We need to find a diagnosis and solution that is replicable across users to solve this puzzle. 

check with HDMI CEC turned off if the problem persists.  I think it helped me