Arc and LG OLED TV sounds cuts in and out

keep us updated. does anyone have the new C1 LG OLED tvs and having this issue?  i’m thinking about replacing my C7 with C1. 

I had purchased an LG C1 last month and the Arc last week. Drops audio for Dolby Atmos daily. Sonos said it was the TV set having problems sending the signal. Funny thing is I purchased a different soundbar first and it did not have this problem. I’m assuming if it was the TVs “fault” it would’ve done it to the previous bar.  It’s such a shame because other than this issue it’s a great soundbar. I wish there would just be a fix rather than blaming another company. I mean technically the Arc is the accessory. The accessory should make sure it adapts to the main piece of equipment. Without the tv there’s basically no use for an arc soundbar. Obviously there’s a problem between these 2 units. I hope someone resolves it soon. Thank god the place I bought it from has a 60 day return period. 

You are not alone.  I just upgraded from a C7 to a C1 and I’m noticing cutouts with the built-in Netflix app with PCM 5.1.  Not sure if it’s the Sonos Arc or the LG.  On the TV, I do have eARC enabled and audio output set to passthrough.  Input is set to bitstream.

Sonos please take note of this issue!!

ugh…thinking about just going with another brand tv when i decide to get a new tv. i hear the sony a90j oled is equal/better than lg oled. 

Just set up a new C1 and Arc and having the same issue when I start a new audio feed such as starting an Atmos movie or opening Apple TV app. So far switching to the set top box and back to the app/source resolves it but I’ll try doing the eArc toggle next time.

Hope there’s a resolution in the pipeline as the wife is not impressed with my attempt to move to a simpler solution from my previous system!

Update:

No audio drops after i got my new arc. Not one. With my old arc i had multiple a day when switching source. There is no doubt that my problem was related to the arc.

I was looking for this thread for a while. I thought I was the only one who having this issue. 

History: I own Arc for a while now. I used it with Sony x85 2016 model for more than 6 months, and had no issues with normal ARC HDMI port. 

Last month, I purchased LG C1 65” model. After few weeks, I have exact same problem. 

Turing On TV from standby mode OR Switching inputs OR Changing Apps from Apple TV 4K (NEW model) - My audio drops off. 

I’m also dealing with Sonos Support and LG Support for last few days, but no one able to own this issue or help to find a resolution. 

Same here. Sonos arc. Lg oled 77 inch cx. Sonos drops in and out. Stopping earc temporarily fixes it. Still drops. Apple TV 4K. Increasing volume on tv is only temporary until it auto adjust to a lower point. Same on the app. Changing the volume up is only temporary until dropping back to the same random lower point. TV sees Sonos audio. Sonos app doesn’t detect earc. Such a hot mess. I have so much Sonos and lg oled and the arc with the 77inch cx is just awful. Help!

Same Here.

LG C165
Sonos Beam Gen 2
Apple TV 4K


Audio drops when watching content in dolby atmos on Apple TV

Perhaps try switching off the HDMI-CEC control just on the devices connected to the TV, including Apple TV and see if it resolves the audio dropout issue …and if that works, then restore HDMI-CEC on each device, just one at a time, and see if one particular connected device is causing the issue. Once that’s established, perhaps leave its HDMI-CEC switched off (if it’s not too inconvenient to do that with your HT setup).