Persistent audio issue

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bendud

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#304633 22-May-2023 18:44

This is driving me gently bonkers... No audio until I restart, every time. All software current.

System:

LG OLED55GXPTA running WebOS 5.4.2-2601, connecting via eARC to the eARC in of a Sonos ARC soundbar (+sub/surrounds) running current Sonos S2.

Apple TV 4K attached to TV via HDMI to HDMI 4, and a Sky box (old one!) to HDMI 3. High speed cables etc. AppleTV OS 16.5

LG has sound out set to HDMI ARC.

Apple TV has Audio Format set to Auto, Atmos available. Perhaps oddly, the Apple TV has "Default Audio Output" TV Speakers - I can't see a way to change this.

I can temporarily choose a soundbar in the other room should I desire.... and changing the Audio Format to "Change" (to D5.1) doesn't help.

Sonos App shows ARC connected via HDMI and plays merry tune to confirm.

But... every time I play anything there's no sound unless I restart the Apple TV. Any bright ideas? There are a million AI generated "try THIS weird trick to fix no sound on Apple TV" spam sites but not much actual useful info. Anyone got any bright ideas?

Many thanks

From the Antarctic Riviera

ARIKIP

246 posts

Master Geek
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#3079750 26-May-2023 09:34

So no issues with the Sky Box and free to air TV,Just Apple TV? I have a similar setup with a Sony OLED going via eARC to a Receiver. Works perfectly most times but the odd time i get no audio from the Apple TV 4K box. Switching back to another input eg Sky/Free to air TV Then back to the Apple TV usually fixes it. I have another setup with an LG OLED and JBL Soundbar with Apple TV 4K....absolutely no issues audio wise at all. eARC/ARC isnt exactly the most reliable connection it makes out to be.

Sony 77" A80J OLED, Panasonic UB820, Panasonic BD-T460, Apple TV 4K 3rd Gen, Samsung Q990D Soundbar

bendud

324 posts

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#3079956 27-May-2023 09:59

Good question- we watch so little sky these days I’m not sure. Will check it out, as maybe switching to sky (ie hdmi in switching on tv) will magically fix it - easier than restarting the Apple TV every time!
Thanks
B

From the Antarctic Riviera

Changeover

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#3080025 27-May-2023 11:57

Hi. I had a similar problem with my setup. My LG65C1 into a Yamaha RX-A1080 using eARC produced no sound at switch on. This was using the LG Remote. However, if I used my Harmony remote there was no problem.

My theory was when using the normal remote the TV wasn’t waiting long enough for the Amp to receive instructions from the TV and so the TV output the sound through the TV’s speakers. When using the Harmony remote the Amp is turned on directly and there isn’t a problem. Solution is to turn off eARC.

In most cases you don’t need to use eARC. If you have a Blu-ray player connected to the TV, yes. ARC supports DD+ which is fine for streaming.

bendud

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#3080028 27-May-2023 11:59

Unfortunately eARC is the only way to connect the Sonos ARC, so probably not a solution for me. Will give it a try though.

cheers

From the Antarctic Riviera