Originally Posted by Roscoe
As we say in the military, Bottom Line up Front (BLUF): I can't seem to get ARC to consistently work when I'm streaming via my LG C9 TV.
LG C9 (Bought in July)
TV is connected from HDMI-ARC on TV to HDMI-ARC on Onkyo using HDMI Fibre Cable
Sometimes I get sound from the TV stream, and sometimes I don't. Can't correlate steps taken to positive results.
WHAT I'VE TRIED SO FAR
If I turn everything off, turn the receiver on, then turn on the TV, then select the streaming app, it usually works. If I do this in any other order (example, going straight from cable input to streaming input) I can't seem to make the ARC connection wakeup.
I think the AVR auto switches to TV mode when ARC kicks in (not sure, it's in another room for space so I can't see the screen) but manually selecting the mode (when sound is not working) doesn't fix it.
I'm not really sure where to go from here. Any help would be appreciated.
So it's probably 1 of 2 things. I have a LG b8 and the tx-nr676, so similar setup. First, on the c9, go into audio settings. Change sound out to internal, turn off Dolby atmos and adaptive sound control, then change audio out back to HDMI Arc and make sure it's set to auto and not pcm.
The 2nd thing would be an issue with hdmi-cec, which I also sometimes experience. I'm guessing you use mainly only 2 inputs on the TV itself (HDMI 2 - named Onkyo in my case) and the TV stream apps, so the internal input. If you have HDMI cec turned on on any of the devices connected to the avr other than the tv, sometimes the inputs on the receiver get confused. Unfortunately if the audio doesn't come thru at first then pressing TV on the Onkyo remote won't bring up the audio, what I usually do is use the TV remote, press home, select HDMI 2 Onkyo, then go back to whatever app I was trying to use and it will resend the HDMI cec command to the receiver.
I'm at the point where I have an Amazon fire stick 4k and don't even bother with the internal apps except for Xfinity stream. If you're sending it to a receiver you're not getting Atmos from the TV anyways, and the fire stick supports Dolby vision.
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