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I know this has been posted multiple times in various scenarios.

I bought this setup just under a month ago, the Arc TV, the Sub and a pair of One SL’s.

I have a wired connection to the Arc, but the Sub and One SL’s are wireless.  I believe the Arc is acting wireless as well.

The TV is an LG 60UJ6300-UA 60” 4K and it has a standard ARC HDMI port which I know may not support the bandwidth for Atmos. 

The network is run off of an ASUS AX-88U 5G network in an apartment and seems to have a strong signal, though I am considering trying a Boost to see if it is interference.

The cut outs are fast, and can vary sometimes it is one or two cutouts, sometimes it is consistent and I have to turn everything off for it to stop.  It almost seems like a sync issue where everything drops and then re synchronizes and starts again.  I have changed the HDMI cable, changed the WiFi from 5G to 2.4G and back and changed to wired for Arc, tried adding a delay, and tried re-registering everything. Turning off CEC (Which killed the connection all-together), and tried changing the output from Auto to PCM.

It seemed to fix itself for a while after I updated the firmware so I thought that was a resolution, but it has come back.  It isn’t consistent either so I can’t correlate it to anything specific.

I have submitted a diagnostic after this occurred, although the issue went away before I was able to submit.  The number is 1821689065.

Since this is a standard HDMI ARC vs eARC, I thought about trying the Optical connection instead since the standard ARC doesn’t support Atmos or real DTS either.

 

Any suggestions?

Nathan

Hi Nathan, welcome to the community.

 

I've taken a look at your diagnostic and can see that the device in your HDMI 1 port is frequently sending messages in short bursts via CEC to the Arc to request audio playback and playback status. That could definitely cause issues with dropouts and interruptions. There’s a couple of ways to test if this is the root cause of your issue:

  1. Temporarily unplug that device and use your TV as normal. If the interruptions stop, it’s that device.
  2. Connect the device to the TV with a CEC-less adapter
  3. Turn off CEC in that device’s settings (if applicable).

If none of these suggestions help, I’d recommend getting in touch with our customer care team who can perform some real-time troubleshooting with you to further investigate what’s happening to your system.

 
 
 
 
 

Hi. Sorry I changed my email and it had me create a new ID.

Anyway it took so long to reply as HDMI 1 was my Tivo and there was no way to turn off the CEC and when I would try to turn it off on the tv it would disassociate and not work.

That was one of the last straws.in getting rid of cable and tivo. So I no longer have it hooked up and instead have an AT&T TV android box. It worked fine, had a couple dropoffs but a lot of lip sync issues that no matter how I would adjust it always kept changing.

I was finally able to get cec off last night, which also involved me using the optical connection and optical to hdmi adapter instead. Which I still get Dolby 5.1, just not atmos, which I didn't get before either since I only had arc and not earc.  

After the cec change which I only have run for a short while it seems ok. Will monitor and hope it stays that way.

Thanks.

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