Lost surround and sub ( after update ?)

That’s sounds like a good test - let’s see who gets there and test first! 

@ratty - without sounding condescending, you are sure that the volume controls will communicate back to the ARC on 5Ghz? Just want ti check!

The controls on the satellites always have done. Can you not just check?  

You misunderstood the question. I know the controls on the satellite will adjust volume, I was just asking whether it’s defo communicates via the 5Ghz ad-hoc network that the ARC creates. 

Yes of course, as you’d observe when the Arc + satellites are working correctly.

From a network standpoint the 5GHz connections are simply another way to send IP packets around the system. They just happen to have more predictable latency/jitter at layer 2.

Thank you. OK we have a new test. Let’s see.

I’m just catching up with recent posts here, as I was ‘out and about’ yesterday, but just to mention I use Plume WiFi Mesh. I sometimes switch the Plume Hubs between bridge and main router mode and always have the ISP routers own WiFi adapters switched off. The setup easily switches between either router. Some of the devices on the network have static IP addresses and I mostly choose to run Sonos on SonosNet.

So initial test is that everything is working as should be after having to removed/add surrounds yesterday. Volume can be controlled with surrounds as expected. I’m just flicking between source inputs (especially ATV) and sound formats to try and trigger the fault… FWIW I have tried adjusting the sound with surrounds during the fault previously and it didn’t work. That said it’s best to confirm a live check. 

Hi @Brad Porter,

 I’m absolute open to your troubleshooting line and I think it makes reasonable sense. When I’ve been saying not network related or interference related I’ve meant my network. I think the error is home theatre triggered, not network triggered but there might be lots to learn in monitoring dropped packets and channels. I also like the cumulative aspect of the dropped packets. I was always thinking this might be related to high bit rate streams like multichannel pcm but was thinking in terms an error at a peak in bit rate. This would explain why Apple TV’s and other Dolby may devices seem so over represented (but not necessary). But a cumulative thing seems to fit even better. Would you be so kind as to review my post from last night because I think I did what you suggested (started monitoring dropped packets and channels prior to and immediately after a dropout). Although I did have some dropped packets in the location you’ve referenced, it was not runaway and only on the Arc, not on the satellites. And the channels in question did not seem to change due to the dropout. Hoping I’ve not done your procedure correctly and open to coaching to try again 👍

I’ve now caught up with this thread and see that the testing here is continuing to try to see what happens to the HT surrounds ad-hoc WiFi frequency/channel when the TV audio does ‘randomly dropout.

I was mostly curious to see if the issue occurs when the surrounds are always on the same channel for each ‘individual’ user, so (just as an example) if the surrounds regularly dropout for (say) ‘Peter’ when the HT setup is using frequency 5200 (5Ghz channel 40), then it might be the case that something nearby is interfering with that one frequency, causing packet loss and communication issues between the Master HT device and it’s surrounds .. it’s something that’s probably quite difficult to reproduce in any research-lab, particularly as each Home environment is different and somewhat unique. Anyhow perhaps let’s see if the regular monitoring of the channel may reveal something useful here.

I’ve been battling this too (ATV 4K - g2 and Firetv4kmax), though with some other circumstances. You can see my set up in the a Sonos thread HERE. (I haven’t read through the entire thread, just the first few posts;).

While not the solution, I’ve noticed two things with the author’s phenomenon in my “5.1.2” system:

1. If I toggle the sub3 and surrounds on/off in S2, the Arc’s brains distribute the overall mix back to the Arc (increased bass etc) even though the sub/surrounds were playing no audio and show as connected in S2.
2. A TruePlay retune, sometimes brings the sub3 and surrounds back (meaning audio play out of them) precluding  a full reboot of the ancillary speakers.