Era 100 stereo pair losing sync

To bad. 
I Hope they will help you. 

So support added the step of rebooting the ERA100s after rebooting the router and this so far keeps the echo effect from reappearing for the last few days. I can’t be sure if the split of 2.4 and 5 Ghz router bands also was part of the solution, and a reboot of the speakers was the missing bit to fix the issue.

But… I still have another issue that when I switch my source away from Sonos radio (Spotify/Bluetooth/Line-in): the stereo pair “breaks” and sound only comes from one speaker once I do a source switch (even if I go back to Sonos radio). But that can be a topic for another thread

Hi @joeser 

That is not at all what we want happening, and it is not entirely off-topic for this thread!

Could you please recreate this behaviour and submit a support diagnostic - I can’t be sure that I will have an answer for you, but it’s definitely something I’d like to check out for you. Thanks.

OK, I posted a diagnostic after switching inputs to line-in and only one speaker working.

As a test I tried line-in and bluetooth connection to both speakers, and the speaker which had the connection would be the one with sound output, but Sonos radio and Spotify always came out the same speaker. I am pretty sure the speaker that put out sound with Sonos radio and Spotify was the original speaker (the one which was selected first when setting up the stereo pair, then the other non-sound speaker was the one that was added).

When I turn off the speakers once sound is only from one speaker, the speaker that wasn’t producing sound blinks the LED white slowly about 8 times, then orange quickly about 5 times. The speaker with the sound doesn’t do any blinking of the LED.

Hi @joeser 

Thanks for the diagnostics. We are seeing some log entries pertaining to input buffers that we should not be seeing. As a result, I have something I’d like to try doing.

Please separate the stereo pair of speakers in the app, assigning the extra speaker to a temporary room when asked. Please then physically swap the speakers over, so the speaker that used to be the left speaker will now be the right, and vice versa. Pair the speakers back together afterwards. Settings icon » [relevant room] » Remove Stereo Pair. Settings icon » [relevant room] » Set Up Stereo Pair. 

In addition, we can see that there are two devices transmitting WiFi. To simplify matters, please remove the WiFi credentials for the “********LR” signal from your Sonos system (leaving the credentials that are the same but without “LR” at the end). Settings icon » Manage » Network » Manage Networks » tap the remove button (circle with line through it) for the stated network.

Once done, please test with music initiated from within the Sonos app, as well as by Bluetooth, Line In or AirPlay (whichever ones you use) and let me know how you get on. If there are still issues, please submit a support diagnostic afterwards once more. Thank you.

Additionally - if there are still issues - could you please describe your network topology in full? Thanks.

I hope this helps.

Hi Corry,

OK, I did the actions requested, but the problem still occurs so I submitted a diagnostic.

Usually the other input sources will work in stereo immediately after creating the stereo pair and fail later in the day but this time immediately after recreating the stereo pair Sonos radio worked fine as stereo but immediately on trying Bluetooth input one speaker dropped out. It was back to where Bluetooth played on only one speaker and Sonos radio played only on the other immediately when I tried Bluetooth connection.

Network topology:

A Fiber modem feeds hardwired to a Telus router which is hardwire and Wifi. This router has the WiFi split into hyperbole (5G) and hyperbole-24G (2.4G). This Telus router is Cat5 wired to another router at the other side of the house which also has separated 5G (hyperboleLR5) and 2.4G (hyperboleLR) WiFi bands. There are several devices hardwired to the routers, only phones and tablets and one Nvidea shield (almost never used) are on Wifi, so the WiFi is not heavily used.

The Telus router used to have 2.4 and 5G bands on a singly named network “hyperbole” but I changed this in response to suggestions from Polologt above and it did at least seem to help with the fixing of the echo development while I stayed in stereo with just Sonos radio.

 I was not aware you could Bluetooth to a stereo pair.  If you can let me know how.  I’d like to do that with my Move stereo pair.

Hi @MoPac 

Playing a Bluetooth feed to a stereo pair is possible (when on WiFi) with all Sonos speakers that support Bluetooth, apart from the original Move - it is not capable of communicating via Bluetooth and WiFi concurrently, and therefore cannot stereo-pair when playing Bluetooth.

 Bummer!  My Moves are the originals.  Of course if I had WiFi connected why would I want Bluetooth?

Hi @joeser 

Thanks for trying those steps. Looking at your newest diagnostic, however, I am seeing the same errors as I saw before. This is probably good news, as it implies that there is no fault with either of the speakers - if there was, I would have expected different results with a different speaker now in charge of the pair.

So, it does seem that the cause of this issue may be due to the topography of your network, or the configuration of a device forming part of it. The reason that I asked about your topography is that we did see evidence of the second WiFi broadcast (presumably from your secondary router). Although it is probably a long-shot, could you possibly try removing the connection between the two routers temporarily, reboot the main router and the speakers, then test? When in doubt, we like to try simplifying things where we can, and this seems like an obvious way to do so. If there is no change, by all means please reinstate the connection, but I do recommend ensuring that the second router is put into “Bridge” or “Access Point” mode regardless - if it is not, countless weird issues can arise as a result (due to Dual DHCP).

I’m currently about the only person working on this side of the Atlantic, but I will show the diagnostic to a colleague tomorrow - I may come back with some more advice for you after doing so if you have not already replied here by then.

I hope this helps.