Hey all. Hope this is the right place for this, if not please direct me!
So basically my question is about Atmos passthrough over HDMI ARC on the 2017 P series.
I just picked up the new Vizio Atmos soundbar (5.1.2) and set it up, but am having some weird issues.
Long story short, I'm trying to get a lean Dolby Vision/Atmos setup running.
If I connect the soundbar to the TV via HDMI Arc, it detects itself and sets up, but the audio output is hit or miss. The Xbox One X works normally BUT you cannot switch to Atmos. When you do you get an error message. What is weird though is that when you first select it, the green light on the soundbar (that indicates Atmos) flashes for a second before going back to blue and prompting the Xbox error.
What is stranger is when I try to play a movie with Atmos through Vudu directly on the TV (using the built in "app" which is basically Chromecast) the sound just... doesn't work. It initially pops up Atmos in the top, but then switches toe just Dolby, and the sound itself cuts in out and every few seconds, but is mostly silent.
At this point I was thinking oh maybe the soundbar is defective.
But when I hook either the Xbox One X or the Chromecast Ultra up to the soundbar, in the HDMI IN port, and the connect the TV to the soundbar using the soundbar's HDMI out port, the Atmos audio works and the HDR10 or Dolby Vision passes through to the TV. So using this setup, I am able to watch or play content with both HDR and Atmos - but only from ONE source at a time.
This also seemed to indicate that the HDMI ports on the soundbar are working, all the speakers are working, the HDMI cables are working, etc. The issue seems to be with the Atmos being passed through the P series and out of the ARC port.
So, the first obvious question is this: does the 2017 P series support Atmos out from the ARC port? Just based on the forum posts I saw when seeing if someone else had asked this, it seems like it does? But maybe I am mistaken?
If it does, has anyone had any similar experiences that might indicate that the TV (maybe the ARC out) is defective? Or is it more likely to be a setting? Or something that may need to be updated by Vizio?
Thanks for the help and again, if this is in the wrong place just let me know where it should go.