Sonos Arc & LG G1 with eARC: Issues using Bluetooth Headphones

  • 8 September 2021
  • 10 replies
  • 457 views

Hi Sonos Community,

Having issues using the LG G1 and the Sonos Arc when I want to use Bluetooth headphones on the TV. Maye one of you have some insights?

So I’ve done quite a bit of research and nothing I do in the settings of either the ARC or the G1 fixes the issue. I have seen and read through the entire thread in the other channel but thought it worthwhile starting a new channel in the Troubleshooting section. 

I have reached out to Sonos via LiveChat and they advised that this is known. I have logged a support case with LG as well. 

Trying to set the G1 to use a pair of wireless headphones using Bluetooth whilst the ARC is connected using eARC.

The ARC keeps forcing the audio out connection back to itself. The Bluetooth connection to the headphones disconnects after about 1-2 seconds when it reverts back to the Sonos Arc as the audio output device.

I understand that this is how HMDI-CEC is meant to work but have tried everything to stop this behaviour, even setting the TV to optical out but the ARC just keeps taking over.

Things I’ve tried:

1. Disable QuickStart+
2. Disable eARC Support
3. Change Audio Output to Optical
4. Disable HDMI-CEC (reverts back to Simplink On after a few seconds)

Outside of physically disconnecting the bloody Arc from the TV, is there any other way of getting this working? Seems to be an issue for all TVs with eARC?


10 replies

even setting the TV to optical out but the ARC just keeps taking over

If you mean you’re using the Sonos optical-HDMI dongle there’s no way the Arc could ‘take over’. The TV wouldn’t know the Arc was there at all. Optical is unidirectional.

 

even setting the TV to optical out but the ARC just keeps taking over

If you mean you’re using the Sonos optical-HDMI dongle there’s no way the Arc could ‘take over’. The TV wouldn’t know the Arc was there at all. Optical is unidirectional.

 

No, just tried setting the TV to optical out to see if it would stop the Arc forcing connection back to itself over the eARC connection. Even for optical out (without anything attached to the optical port), the Arc forces connection back to itself after 2-3 seconds 

What happens if you turn off the ARC/eARC function in the TV’s settings? Does it still revert?

And is that actually a different setting than turning on the optical output, or are they essentially one and the same? 

 

What happens if you turn off the ARC/eARC function in the TV’s settings? Does it still revert?

And is that actually a different setting than turning on the optical output, or are they essentially one and the same? 

 

Yep all settings that change ARC/eARC revert including changing to Optical. For instance, when setting the HDMI-CEC to disable, two or three seconds later it forces itself back on (with a notification of “Simplink On”. When disabling eARC from memory its the same behaviour.

Ideally I dont want to be disabling eARC for Dolby Atmos for when watching movies etc - just want the Sonos to stop forcing the connection back to itself, or better yet a way to disable/turn off the Arc in software without physically removing the power or HDMI cable...

Userlevel 7

Hi

These instructions (that work :slight_smile: ) are for a LG Model 55NANO90UNA.

LG menus change slightly in appearance between models (I have 3 LG’s) but for the most part can be easily navigated. I use my Bluetooth Headphones in the bedroom for obvious reasons at night when I can’t sleep and don’t want to move to my media room.

  1. First register your Bluetooth (BT) Headphones as a Device on your LG (Step 2)
  2. Go to All Settings > Sound > Sound Out > BT > Device List (3 dots/lines
  3. Place BT Headphones in Pairing Mode > Select Search > Register BT Headphones as a Device
  4. Go to Connections > Device Connections > Turn Off SimpLink (CEC) *
  5. Go to Sound > Sound Out > HDMI > Bluetooth
  6. Enjoy your BT Headphones

 * SimpLink (CEC) will auto-turn on when you switch back to HDMI in Sound Menu

Note: When viewing content via AppleTV 4K (physical box) with AirPods Pro or AirPods Max the above steps aren’t required. Just switch to HDMI input for the AppleTV 4K and connect AirPods Pro or AirPods Max in Apple Menu. After the first connection subsequent connections are automatic when in range.

FWIW, it’s not Sonos that is ‘forcing’ the change, it’s the way ARC (part of CEC) is written. All Sonos does is publish the fact that it’s a speaker and what formats it can deal with to the hub, which is the TV set. It has no “control” there. All of that is handled by the circuitry in the TV set. 

Hi

These instructions (that work :slight_smile: ) are for a LG Model 55NANO90UNA.

LG menus change slightly in appearance between models (I have 3 LG’s) but for the most part can be easily navigated. I use my Bluetooth Headphones in the bedroom for obvious reasons at night when I can’t sleep and don’t want to move to my media room.

  1. First register your Bluetooth (BT) Headphones as a Device on your LG (Step 2)
  2. Go to All Settings > Sound > Sound Out > BT > Device List (3 dots/lines
  3. Place BT Headphones in Pairing Mode > Select Search > Register BT Headphones as a Device
  4. Go to Connections > Device Connections > Turn Off SimpLink (CEC) *
  5. Go to Sound > Sound Out > HDMI > Bluetooth
  6. Enjoy your BT Headphones

 * SimpLink (CEC) will auto-turn on when you switch back to HDMI in Sound Menu

Note: When viewing content via AppleTV 4K (physical box) with AirPods Pro or AirPods Max the above steps aren’t required. Just switch to HDMI input for the AppleTV 4K and connect AirPods Pro or AirPods Max in Apple Menu. After the first connection subsequent connections are automatic when in range.

Many thanks, i’ll give it a crack soon but from when I tried this, at Step 4, the TV just keeps switching back the CEC back on (Simplink On) even when switched off. This could be an issue with the way the G1 (OLED65G1PUA) is handling the eARC connection...

FWIW, it’s not Sonos that is ‘forcing’ the change, it’s the way ARC (part of CEC) is written. All Sonos does is publish the fact that it’s a speaker and what formats it can deal with to the hub, which is the TV set. It has no “control” there. All of that is handled by the circuitry in the TV set. 

Interesting, I have raised a case with LG and they’ve sent my feedback to their Software Bug/Firmware team so waiting on feedback and troubleshooting with their engineers. Fingers crossed its something that can be solved. :fingers_crossed:

I have the identical issue. I'm following with interest. Thanks! 👍 

Here are my experiences with OLED65CXPUA and ARC. I too have the same intermittent issue with Bluetooth headphones disconnecting after a few seconds and reverting back to eARC (ARC). I can resolve the issue by unplugging the TV for about a minute or by turning off SIMPLINK as previously described. I didn’t have to re-pair my headphones for this to work. As indicated, SIMPLINK will turn itself back on when the TV is powered off/on.

As a side note, I found that if I turned the TV off while connected to my headphones, it would revert back to eARC/ARC on the next TV start-up. If you disconnect the headphones while the TV is on, it will revert to internal speakers and you have to manually switch back to eARC/ARC.

Reply