Having trouble. Have my Sony UBP-X800M2, which has a separate, dedicated audio out HDMI. I have the HDMI1 going to my 4k TV and the HDMI2 (Audio Only) going to the 975.

The 975 just keeps showing the Dolby Digital scroll on the display but it never locks and makes sound. Is this because the 975 is waiting for a video handshake to fully lock? Is there a way around this? I know they once offered the HDS-42AVR, but that's discontinued and frankly more than I should need especially when the Sony BRP essentially does the same...

FWIW: I'm using the Sony's Coax output to the 975 in the meantime, but I don't think it's the best sound.

I guess my other option would be ARC... but how would I set that up, and how would it compare to direct audio out from the Sony?

Cheers,
DJ