Contributor I

Lost surround and sub ( after update ?)

Forum|Forum|4 years ago
April 23, 2022
1604 replies
81294 views

Hi

I don’t know if my issue is related to the 14.6 update but I noticed today that I had no sound from my surround (play 3) and my sub (Gen 2), only the Arc is working They are still present in the app under the my System view but now sound which every sources

When I reboot each of them, the sound comes back temporary, but when I switch to another source or audio format, thé Sound disappears again. Tried several times, same behavior

Thanks for your help

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Freddy45764

Enthusiast II

Wondering if anyone thinks there’s value in this test to disprove network interference. I’m home alone this weekend and can disrupt things in my house a fair bit. I live in a detached home with my closest neighbour’s wireless router more than 50 feet away from my Sonos gear and my next closest neighbour double that. I’ve already unplugged my Wireless smart home hubs and vpn router and will even disable wifi on my main router for 3 or 4 days. Arc will be wired to main router and Sonos system on sonosnet. My tv and Apple TV will be the only other devices on the network (wired connection) Do you think that would be sufficient to disprove network interference? I just don’t think that can be the cause. Of all the things tried in troubleshooting by all affected users, stability (less frequent dropouts) does not seem to be improved at all by networking fixes while HDMI connected device settings or connection changes seem to actually have some beneficial effect in reducing the frequency of drops.

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Brad Porter

Enthusiast II

To maybe help get this thread back on track, a little, I have a quick suggestion for some users here who are experiencing the surround dropout issue and who can perhaps easily reproduce it..

If you navigate via a web browser to the below (example) URL

http://xxx.xxx.xxx.xxx:1400/support/review/

… replacing the place-holders with an IP address from a Sonos player, you should see a list of Sonos products listed above the option to view the Sonos matrix - in that list of Sonos system devices, there will be the two HT surrounds that are perhaps experiencing the dropout issue.

If you select one of the surrounds to simply expand the options available and then select /proc/ath_rincon/status

… it will reveal some information, including that speakers ‘operating WiFi channel/frequency’ (see attached screenshot).

My thoughts are, it might be worth monitoring that wireless channel to see what channel is in use before the speaker drops-out and then also check it again afterwards, to see if it has perhaps changed its WiFi channel at any point… it might reveal if the problem perhaps occurs when the speakers are on a particular 5Ghz WiFi channel and if it does always happen when on the same channel, then it might (just ‘might’) indicate some type of wireless interference that is ‘perhaps’ causing these dropouts.

I have posted an example screenshot of the system area I am referring to here and underlined the operating channel number.

I have also attached a screenshot of the 5Ghz channels based on the number/frequency you will see on screen in the status information, so you can quickly ‘covert’ those numbers to a 5Ghz Wifi channel.

If anyone has the incline to give that a go just to see if it may reveal anything helpful, but it does mean monitoring the surrounds WiFi channel from time to time.

Better than just sitting there and doing nothing, perhaps🤔?

I hope the above suggestion may help.

@Ken_Griffiths - now that is interesting.

When I look at the Operating Channel for ALL of my speakers its in the 2000 range, not the 5000 range. Which I think are 2.4Ghz range.

What do you have connected that is on the 5000 range? (as per your screenshot)

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Brad Porter

Enthusiast II

Is it because I have the boost and its using 2.4Ghz for all speakers perhaps?

peterbault

Enthusiast II

look I’m frustrated too but paying money doesn’t entitle you to be a jerk

how’s your system after you enabled sonos assistant?

I’ve been out of town since I installed it. On my way home today

Ken_Griffiths

Is it because I have the boost and its using 2.4Ghz for all speakers perhaps?

I’m assuming nothing is wired in your Home Theatre setup, particularly the surrounds (not recommended)…

The home theatre master players contain two radios: 2.4GHz and 5GHz. The 5GHz radio is only used to connect to its satellites (which is also why the HT master cannot connect to a 5GHz WiFi).

When in use, the HT surrounds (and Sub) should each be using frequencies in the 5Ghz band. In fact rebooting the main HT device can sometimes cause the channel frequency to switch. Its an Ad-hoc wireless connection and not related to the router WiFi.

I think there are some occasions where the 2.4Ghz band maybe used by the Sonos surrounds for updates and possibly if all are in sleep, rather than just standby, mode etc; so it may just be that and probably nothing to worry about at this stage.

Mid-Frequency 2412 is 2.4Ghz channel 1 by the way.. so I assume that’s your SonosNet (Boost channel).

edit: see what the channel/frequency on the surround shows when you are watching TV. (You may need to refresh the browser page).

B

Brad Porter

Enthusiast II

Is it because I have the boost and its using 2.4Ghz for all speakers perhaps?

I’m assuming nothing is wired in your Home Theatre setup, particularly the surrounds (not recommended)…

The home theatre master players contain two radios: 2.4GHz and 5GHz. The 5GHz radio is only used to connect to its satellites (which is also why the HT master cannot connect to a 5GHz WiFi).

When in use, the HT surrounds (and Sub) should each be using frequencies in the 5Ghz band. In fact rebooting the main HT device can sometimes cause the channel frequency to switch. Its an Ad-hoc wireless connection and not related to the router WiFi.

I think there are some occasions where the 2.4Ghz band maybe used by the Sonos surrounds for updates and possibly if all are in sleep, rather than just standby, mode etc; so it may just be that and probably nothing to worry about at this stage.

Mid-Frequency 2412 is 2.4Ghz channel 1 by the way.. so I assume that’s your SonosNet (Boost channel).

Thanks Ken. Yep, that is correct. And when I started playing the rears and subs switched to 5000 range as per below. So this is all adding up.

Ken_Griffiths

Here are the frequency / channel numbers for the 2.4Ghz band…

peterbault

Enthusiast II

bonded speakers use 5ghz when on wifi but they use 2.4ghz when on sonosnet right?

I experience the issues with both scenarios which makes me think it’s not interference. What are the chances I’d have interference on a certain channel on both bands around the same time

Ken_Griffiths

@Brad Porter,

If you can get the surrounds to dropout, it would be interesting to see what, if anything, happens to the 5Ghz ad-hoc wireless channel frequency. I understand that the channel is set by the master HT player and I’m just wondering if the surround might be dropping when on a certain assigned channel, as that might infer something is causing wireless interference - perhaps something near to one of the speakers using the routers 5Ghz band, perhaps?

My other thoughts are, that some modern routers and mesh-base systems (which can often have the same WiFi SSID for both their 2.4Ghz and 5Ghz bands) may have ‘band steering’ enabled to assign network devices to the most appropriate local WiFi band... Sonos speakers do have both 2.4Ghz & 5Ghz radio adapters, so I’m wondering if the routers are trying grab the surround speakers away and put them on their own band, causing the ad-hoc 5Ghz WiFi connection (between the main player and surround) to drop.

Of course that’s just some ‘pie in the sky’ thoughts, but maybe those who have this issue might want to perhaps explore such things.

Ken_Griffiths

bonded speakers use 5ghz when on wifi but they use 2.4ghz when on sonosnet right?

I experience the issues with both scenarios which makes me think it’s not interference. What are the chances I’d have interference on a certain channel on both bands around the same time

No, that’s not the case. The surrounds ‘bond’ to the master HT device using the ‘fast’ 5Ghz band ad-hoc wireless connection - it matters not how the Arc/Beam etc; is connected to the LAN. The 2.4Ghz band is not quite fast enough to keep up with the video on the TV screen.. you would end up with lip-sync issues if all were to use that band.

A Sonos HT device uses its 2.4Ghz band for its wireless connection for music audio/updates etc but the TV audio is received over HDMI-ARC or Optical and the rear channel TV audio is sent to surrounds immediately - hence only the 5Ghz band can be used to do that task (unless you choose to wire all to the router/switch).

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