Not sure what im doing wrong but the Simplink setting on the LG C1 will automatically re-enable itself. So i dont think that ‘work around’ is an effective one. Im able to get the bluetooth headphones to work intermittently by following a random procedure of switching the audio ouput and disabling simplink, but i have not been able to uncover a pattern/procedure of steps required to do this consistently. 

The only thing that seems to work 100% of the time is unplugging the HDMI cable from the eARC enabled hdmi port on the TV or soundbar. 

To assure myself that im not going mad, i plugged in my old Samsung soundbar and it worked a treat (including LG remote control volume adjustment which demonstrated that CEC was still on), so this is definitely a SONOS related issue. Anybody who begs to differ is clearly delusional. 

After dropping some decent coin on this setup I’m left quite disappointed with my first (and last) SONOS acquisition given the terrible customer support and outright refusal to even acknowledge that this is their problem to fix. 

Hi All, BOSE 300 WORKS

I can confirm an Error with my Sonos Arc BUT works perfect with Bose soundtouch 300. Both tested on my Samsung Q80 75in

I used a friends Bose and it does not switch back to HDMI once I select tv speakers or Bluetooth Buds.

However, my Sonos Arc fails and does auto switch back to HDMI after 2 seconds when I select TV speaker or buds. I have videos to prove this.

Typical Tech giant answers = Samsung says it works with Bose so contact Sonos because this proves our TV sees a soundbar correctly. Sonos says call Samsung because there TV is choosing what port to push sound out. We don't control it.

Can anyone else please test or confirm if thier TV works with other soundbars after failing with Sonos and post back here.

Why does Samsung TV see a Bose 300? What are they doing different?

Can Samsung and Sonos please get together and resolve this issue. I'm sure it's a few lines of code because it's proved it works for 2 seconds already.

So frustrating to buy High-end goods and get pushed back and forth. 

Someone step up please.

I really don't get your logic. Multiple OEMs have ARC products working perfectly, Sonos does not. Sonos implements CEC in a way that doesn't work and now multiple TV manufacturers should all separately fix this for them?!

SimpLink disabled in my LGC9 and my Airpods now working more then 2 seconds still IN MY OPINION there is some software conflict - thats why ARC or Beam’s doing this. As other devices not doing this on same TV and same Bluetooth set. So Sonos guys don’t get all upset - fix it !!! My wife will not give ma what I want from her for next 2 months as the house was shaking before I found this topic lol !

I have noticed the same issue with an LG C9 and Sonos ARC. I have an old pair of Sony rf wireless headphones connected to the headphone jack. When I switch to the headphone option they work fine, but when I try to connect my new Bluetooth headphones the tv switches back to eARC after a couple of seconds. Really frustrating. Seems strange its just the Bluetooth connection that is is affected, but looks like I will be sticking with the old headphones. Its a shame Sonos cannot fix this as I never had the same issue with my old soundbar. 

Me too. Sonos needs to fix this.

Never had a problem CHOOSING the audio output that I wanted to use during a particular TV session (night=Airpods Pro; day=internal speaker) UNTIL I connected Sonos Arc via HDMI Arc port on LG OLED65C9. Now, when I CHOOSE AirPods Pro (connect via Bluetooth), the sound output switches to AirPods Pro for about two seconds, and then reverts to Sonos Arc via HDMI Arc port.  The same happens when I CHOOSE the LG’s internal speaker: the sound output switches to the LG’s internal speaker for about two seconds, and then reverts to Sonos Arc via HDMI Arc port.

Sonos Arc appears to be overriding my sound output selection. The wife is very aggravated (that I’m not using my AirPods Pro! The workaround (unplug the Sonos Arc or its HDMI cable) aggravates me!

Please fix!

I've had Beam and sub 3.1 combo for 2 years now hooked up to a LG E8 and have to switch HDMI CEC  off to use bluetooth with my  headphones. I see it as a CEC issue not a Sonos one. I also have CEC issues when activating CEC and other items like ATV4K and a Foxtel cable box I need to turn it off for the Apple box. 

I think the issue is due to Sonos being a music player and media streamer and not just a dumb soundbar.  

I have the same problem, brand new LG 65CX OLED with Sony Bluetooth headset, everything was working well before I add my new Sonos ARC plugged with ARC-HDMI. As soon as I put it on my Bluetooth headset it automatically switch back on HDMI ARC… really frustrating. I have to unplugged HDMI ARC each time I use my Bluetooth headset… that’s not normal 

I don’t wan’t to plug the Sonos with IR connection because the sound of my tv won’t be automatically Controlled. 

is there anything to do?

I agree.  Sonos app should be updated to fix this issue!!  Come on, Sonos.  Get with the program. ; )

I bought an Alexa enabled plug. I say “Alexa turn Arc off.” It powers down. The  Bluetooth sticks because the Arc power is off. Just have to turn back on in am. 

In the WebOS/LG TV firmware 5.00.03 you need to goto ‘Settings/Connection/HDMI Device Settings” - Simplink ON/OFF is the second option in the list.

IMHO the issue here is with WebOS/LG I think, as it should prompt to switch off ‘simplink’ whenever a user selects ‘another’ audio-out option.

Hey, new to the forum. Recently purchased the Sonos Arc and ran into the same issue with my LG OLED C9 77 inch tv, with the HDMI Arc input being the only audio input I could play while using my sound bar unless I unplug the power cord or the HDMI cable. If I try using any other input it goes back to the HDMI Arc input immediately. One work around use could do is purchase an HDMI splitter. I listed the link below: 

https://www.amazon.com/dp/B079JQ9XXV/ref=cm_sw_r_other_apa_i_xM-XFbTJ3V16Z?_encoding=UTF8&psc=1

You'll be able to select the input you wanna use while leaving the HDMI cable in both the sound bar and tv as long as you select the splitter to the opposite input so it's not conflicting with your tv/sound bar. I hope this helps. 

Same issue here. LG CX, Sonos Arc, and Bluetooth headphones.

After connecting headphones, TV will immediately switch back to Sonos Arc. I have to disable SimpLink for it to stick with the headphones.

My LG C9 TV works fine switching from Sonos to headphones/Optical/etc...

Just turn on eARC in additional settings

Supplementation.
If you wish to return to the sonos soundbar, please reverse this procedure.
When ARC is selected, Simple Link is automatically turned on.
This is probably because there are frequent problems with no sound if it is left off, so it is necessary to turn on the path so that there are no problems with manual connection in any home.
I am Japanese and not affiliated with LG or Sonos, but I would like to try the IKEA rear speakers from now on.

regards.

I am amaized that 3+ years and sonos could not connect their own product to a tv and try to replicate this, to see the issue themselves? I had my same experience and i imagine others will continue to have it! All smart tv pwners will see how bad sonos products are due to this 1 bug! Unless they dont set up another audio output.

Hi there - 

Also, a very simple solution I discovered: make sure eARC is turned on. Was having the same issue with my LG/Sonos ARC after I unplugged and restarted some things. I noticed eARC was turned off and when I turned it back on, it stopped switching from Bluetooth to Soundbar.
 

Steps on LG TV: All Settings > Sound > Additional Settings > Turn on eARC at the bottom.

Then Sound Out > Bluetooth.

Should stick. Hopefully works for you too!

I found a solution for most streaming services at least :)

Won’t work for live TV though.

Buy a Roku, I have a Roku Ultra which is great when using the arc. All of the Rokus have the streaming services: Netflix, Disney, Apple TV etc.

Link your headphones to the Roku. When you want to use them switch them on,  and select. All done! Sonos  out of the frame

Etherial has a fixer that can simulate yanking the HDMI connection.

Hi folks, thanks for reaching out with the Sonos Community! I understand that we all want to keep the Sonos Arc/Beam and headphones connected to our TV at the same time and that kind of behavior is based on your TV on how the HDMI connections work because you are connecting two output devices to your TV. As others suggested this is more and can be handled appropriately by the TV manufacturers. You can try optical for better options but it will still up to you on how to proceed. Just let us know if you need anything. We and the community are always here to help.

Has anybody tried an HDMI CEC-blocker in line with the EARC lead to the Sonos Arc? In theory it should stop the Arc switching the tv.

I am getting the same problem with a new LG OLED TV OLED77C2PSC.AAU and SONOS (Soundbar Beam Gen 2]).

If I turn OFF HDMI-CEC on the TV, The Sonos soundbar turns HDMI-CEC back ON within a few seconds.

I was able to fix this problem by setting geARC Support]=Off before setting nSIMPLINK (HDMI-CEC)]=Off

For Headphones
1. >...]->&Sound]->&Advanced Settings]->&eARC Support](at bottom)=Off
2. >...]->&General]->&Devices]->&HDMI Settings]->&SIMPLINK (HDMI-CEC)]="Off" (Will goto TV speaker)
3. Mute TV speaker
4. >...]->&General]->&Sound]->&Sound Out]->&Use Wired Speaker]="Optical Out Device"

For Soundbar
1. >...]->&Sound]->&Advanced Settings]->&eARC Support](at bottom)=Off
2. >...]->&General]->&Sound]->&Sound Out]->&Use Wired Speaker]="HDMI(ARC) Device"

Still far too complicated, compared to simply replacing the SONOS Soundbar with another vendors sound bar.

I am getting the same problem with a new LG OLED TV OLED77C2PSC.AAU and SONOS (Soundbar Beam Gen 2]).

If I turn OFF HDMI-CEC on the TV, The Sonos soundbar turns HDMI-CEC back ON within a few seconds.
So it is is impossible to switch to the Optical Output for headphones, …
(Other than disconnecting the HDMI ARC cable physically)

There is no setting on the SONOS app to disable Sonos automatically tuning HDMI-CEC ON.

Very annoying, Given this problem has NOT been resolved in the past 2-3 years, I will be returning my SONOS Soundbar and giving bad reviews wherever possible.

There appear to be NO response from SONOS support on this forum.

I did and it worked fine, but honestly for me its not the best “solution”. As you know eARC gives you better audio quality, and lets see an example: 

I use my headphone and if I would like to swith from headphones back to the soundbar its automatically turn on the simplink again, which means I have to do the same settings again if I would like to use my headphone ----- go to HDMI settings turn off simplink and after that, I will be able to change my audio output--- and it is so elaborate. Tried with LG soundbar and it is worked perfectly, nothing has had to be changed.

By the way thanks for your time and advice but I sent it back, that is not how it’s supposed to work. Nobody could say if this is an LG or Sonos software bug, because it is a bug 

I have a LG C2 TV with Arc bought last week, and the same problem here. I am not able to turn off the simplelink while my Arc is connected via eARC port, its automatically switch back on. Its only works when disable eArc function on the TV an after I was able to turn off the HDMi-CEC function. For me it’s a big disappointment.

LG suggestion was to have the Arc connected via Optical port and will have no problem but for me it’s just meh… Atmos is not supported via optical port, but if I keep the Arc I have to accept that I wont be able to use for example Bluetooth headphone or etc.. nonsense . Actually it is related just with Lg C2 and Arc so its model related within a brand...