Arc Ultra: Popping Sound Across All Content Types

My Sonos Setup: LG 55” C1 OLED TV, Bit Stream input, Passthrough output, eARC, Sonos supplied HDMI cable. No speech enhancement enabled. Sonos Arc Ultra, 2 ERA 300 surround speakers, Sub Gen 3 and Sub 4.  

After trying many different options, I have found a permanent fix that has been working perfectly for me over the last five days and about 20 hours of TV usage.  Hopefully this easy fix works for others as well.  Here is my fix:

(1) Disconnect Sonos HDMI cable at Arc Ultra end and then firmly reconnect to Arc Ultra. 

(2) Disconnect Sonos HDMI cable at TV end (eARC HDMI Input) and then firmly reconnect to TV.

(3) Remove Arc Ultra power cable for 30 seconds and then reconnect and let Arc Ultra completely reboot.  You may also want to disconnect power cable from your TV, but I did not need to do that.  Use your TV and Arc Ultra and enjoy!

Good luck to everyone and I hope this easy fix works for others.  I’ll repost here if my clicking/popping sound reoccurs, but hopefully my problem is now fixed! 

I tried your tips, unfortunately it didn't help.

I've been supporting their engineering team in investigating this issue recently.

The latest update:

Thank you very much for sending over the diagnostics and audio tap recordings, we really appreciate your help!

Using the previously collected data, our engineering team was able to identify the issue and is currently working on a solution. For now, no further diagnostics or audio taps are needed.

I’ll keep you updated as soon as I see any progress on the internal ticket. At this moment, there is no estimated time of resolution, but I’ll let you know as soon as I have more information.

Hopefully I hear good news soon!

It would be nice if Sonos would make an official statement on this. This whole thing is really annoying, and I've already tried replacing the hardware once without success.

Same issue here, it’s really infuriating

Calling support is essential in getting issues prioritized for fixing, forum staff seeing posts and flagging them doesn't generate the needed data or urgency a call does.

Any updates to this issue? I just set up an Arc Ultra two weeks ago, latest firware, same settings as OP (also on an LG and Apple TV 4k). The pop ocurrs a couple time per day. Not terrible, but terribly annoying.

As above, if you want a fix on the high priority list CALL, nothing else will have as much impact.

Second option, after calling, might be to try to get i the Reddit Office-Hours discussion and hope enoughothers join to get you an official response.

I tend to agree and that’s the plan. A few comments up, jarylc mentioned Sonos acknowledgement of the issue and a solution was being developed. Just hoping for an update.

I will certainly bump the urgency by calling and logging a ticket.

Support has been useless for me…

If they ask me again to unplug and replug the Arc Ultra and then if it fixed the random issue right away I am going to lose my sanity,..