Contributor II

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LG OLEDG4 not recognising sonos Arc Earc

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Hi all. I had an LGOLEDB9 with my Arc connected and all was good. I upgraded to an LGOLEDG4 and for the life of me I can’t get it to connect to my Arc. I have tried everything suggested on here. Such as removing all other hdmi inputs and powercycling both the tv and the Arc. Tried different hdmi cables. Reset the arc & tv back to factory settings. And still no joy. Tv setup fails to recognise that the hdmi cable is connected. Even tried the optical adapter! Anyone got anything else I could try?? I should also say I’ve had a 2 hr support call with Sonos too.

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AjTrek1Answer

@Flash22333

See the Edit to my last post.

this is actually the second set I’ve had. I returned the 1st one 🤣. Makes me wonder if there is a firmware compatibility issue?

WOW!

Here’s the litmus test. Reconnect your old set. If the Arc works then all good. Get another LG model…if the Arc works…then all good…and we now know there is a firmware and/or CEC implementation error with the LG model that started this post.

On the other hand IF the Arc no longer responds to your old set then there’s a case to be made for a defective Arc.

Moderator edit: Removed instances of the word Ultra prior to marking as Best Answer

Together Everyone Achieves More = T.E.A.M.

Show previous replies

AjTrek1Answer

@Flash22333

See the Edit to my last post.

this is actually the second set I’ve had. I returned the 1st one 🤣. Makes me wonder if there is a firmware compatibility issue?

WOW!

Here’s the litmus test. Reconnect your old set. If the Arc works then all good. Get another LG model…if the Arc works…then all good…and we now know there is a firmware and/or CEC implementation error with the LG model that started this post.

On the other hand IF the Arc no longer responds to your old set then there’s a case to be made for a defective Arc.

Moderator edit: Removed instances of the word Ultra prior to marking as Best Answer

Together Everyone Achieves More = T.E.A.M.

Airgetlam

The OP posted about an Arc, not an Arc Ultra.

Bruce

AjTrek1

Ah heck…getting my Arc’s crossed 🤪

Together Everyone Achieves More = T.E.A.M.

G

GuyinPA75

Enthusiast I

I have an inherent (seemingly) mistrust of ‘high end’ HDMI cables, particularly, at least in my experience, as they rarely identify which ‘version’ of HDMI they are. For eARC to work, they certainly need to be a later spec, even high speed ‘older’ cables won’t carry the signal. Do yours identify which version of HDMI they are? Most often, I’ve found it printed on the cable itself, or in the original packaging, which I rarely keep.

Have LG G4 77in and purchased the Fusion 8k brand to use with TV/Xbox/Sonos. Figured with 8k cables have more bandwidth for video, sound, etc. The cable did not work with the Xbox at all. No signal sent or received with TV and Xbox. Tried 2 different cable lengths and no luck.

I still prefer to purchase the “better” cables even though more expensive. They seem to work better when they work, not sure if placebo effect or legit. But after that experience, really starting to rethink that mindset.

C

craigski

Local Superstar

Also, this may be relevant, HDMI2 is the eARC port on LG TVs:

https://www.rtings.com/tv/reviews/lg/g4-oled

There have been widespread reports of black screens, lines, or fuzziness issues with the HDMI 2 port that occur when switching from the TV's native apps to a device plugged into HDMI 2. We tested for this during our initial testing phase and extensively retested the port again to see if we encountered the problem. After further testing, we didn't experience this issue, so it's not a problem that affects every unit.

Airgetlam

If memory serves, there are several settings in the XBox menus that need to be set properly, in order for it to send a Sonos readable (and by extension, other speakers) format to the TV set to be passed out to the Sonos.

High end HDMI cables are generally fine, I just object to paying more for marketing hype. It’s hard to get away from that, but I find Blue Jeans cables to work. They’re often Belkin cables, but the marketing budget there, reflected by the costs involved with the cables themselves, don’t seem to be objectionable to me.

I made the mistake in my younger years, of falling for Monster Cables’ marketing claims. After failing to find one that met my needs at the local Fry’s in Palo Alto, I ‘fell’ for an inexpensive (relatively) RCA made cable. Turns out, the quality was the same, the cost was less than half.

Bruce

G

GuyinPA75

Enthusiast I

If memory serves, there are several settings in the XBox menus that need to be set properly, in order for it to send a Sonos readable (and by extension, other speakers) format to the TV set to be passed out to the Sonos.

High end HDMI cables are generally fine, I just object to paying more for marketing hype. It’s hard to get away from that, but I find Blue Jeans cables to work. They’re often Belkin cables, but the marketing budget there, reflected by the costs involved with the cables themselves, don’t seem to be objectionable to me.

I made the mistake in my younger years, of falling for Monster Cables’ marketing claims. After failing to find one that met my needs at the local Fry’s in Palo Alto, I ‘fell’ for an inexpensive (relatively) RCA made cable. Turns out, the quality was the same, the cost was less than half.

Yep, you are correct on the Xbox. Also can go to Xbox settings menu that shows check marks or Xs showing if meet requirements or not.

Everything showed good to go. But the higher end Fusion 8k cables total failure. Sent both lengths back. Will never buy Fusion again. Will never suggest or recommend Fusion to anyone, including my mother-in-law, if I had one.

G

GuyinPA75

Enthusiast I

Also, this may be relevant, HDMI2 is the eARC port on LG TVs:

Same thought. I’ve seen this very issue when researching about LG G4, and thought to myself? If HDMI 2 is the eARC? Why or where is it an issue for video? Should really be utilized for sound.

Granted maybe person needs the “extra” HDMI port to plug in an Xbox, 4k Player, Nintendo Switch, etc. But if that someone is spending LG G4 kind of money, they are going to use it as home theater and most likely going to have home theater sound system of some sort.

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