Well, I just wrote a long detailed post regarding all the issues I ran into with the initial setup of my new NR797 today, and wiped it out with one idiot keystroke. Here's the distilled version...
Trying to get the new receiver to play nice with a Sony XBR-75X900F TV via ARC (the hdmi 3 input on that TV), an Xbox One S, a Sony Bluray player, a Toshiba HD DVD player, a Roku Ultra, and a Raspberry Pi 3 running Kodi. My prior receiver had no HDMI capabilities, so the Xbox, Roku, and Pi were all plugged directly into the TV, and I ran an optical cable from the TV out to my old receiver for sound... maxing out at Dolby Digital due to the constraints of optical digital audio. Bluray and HD DVD players each had their own optical audio outs to the receiver, and their HDMI outputs went to an HDMI switcher, then on to the television. It all worked great, but no DD+, DTS:X, ATMOS, or other upgraded discrete surround formats past dolby digital and DTS ES, and the HDMI switcher would get kind of buggy at times. All of the gear other than the Roku, Pi, and Xbox were located behind the viewing couch, and cables/wires were run through walls and ceiling to reach the speakers and television. The HDMI cable from the switcher to the TV is 25 feet long, and it's a pretty early one. Bluray playback has never been a problem and has always looked great. UHD discs played on the Xbox have always worked fine, too, but that's connected directly to the TV with a 6 foot cable. NONE of my cables are the newer 2.0 HDMI spec.
After hooking everything up today directly to the receiver, still behind the viewing couch, with the only connection to the television now being the aforementioned 25 foot HDMI cable to the HDMI ARC port on the TV from the NR797, I ran into a PILE of weirdness. Pictures from the Bluray and HD DVD looked great, but I couldn't get any sound. Couldn't get anything from the Roku at all. No sound from the TV back to the receiver via ARC. No stranger to troubleshooting, I disconnected everything, reset the receiver to factory settings, re-ran the initial setup procedure, and hooked up JUST the television via ARC and the Bluray player. I had read in this forum about holding down the BD input button while pressing the power button on the 797 to toggle back and forth between standard and extended definition settings, and I set it to extended definition. Couldn't get any sound with that setting. If I set it to standard definition, I can get sound. That ended up being true not only for the Bluray player, but for the HD DVD and Roku boxes, too. Strangely, the Xbox One S would ONLY play a UHD disc with the setting toggled to extended definition, and after downloading the Dolby-enabling app, it played the Atmos soundtrack, too. HOWEVER, the Xbox would not play anything on Disney+ unless I toggled the receiver back to standard definition via the BD/Power button dance.
Getting sound from the TV via ARC was a mess, too. The only way I could make that happen was to enable "Bravia Sync" or something like that on the TV, which made no sense at all to me. Other than the Bluray player, there's no other Sony equipment in this setup... it's a Sony TV talking to an Onkyo receiver. I had enabled the ARC on the receiver during initial setup.. and, during that process, it did initially return an error message of some kind and the TV and receiver both clicked and sounded like they reset relay or something. I ran the ARC initialization again and it seemed to work the second time. After enabling the aforementioned Bravia-sync or whatever, the ARC is working and I'm getting sound to the receiver, although I'm not convinced the apps on the TV (Netflix, Prime, and Disney+) are providing the soundtracks at the high quality formats advertised for the sources. The "Privilege 4k" app movies are, and sound great... "IMax Enhanced" or whatever is displayed on the receiver. The only time I've seen the word "Atmos" displayed, regardless of the amount of knob twirling, has been when playing an Atmos BluRay disc... no other sources, including UHD discs on the Xbox, even if the sources have the "atmos" logo advertised.
Soooo... why am I getting no sound when I have the HDMI setting toggled to "Enhanced," except when playing a UHD disc on the Xbox, but getting sound on the "standard" setting... EXCEPT for a UHD disc on the Xbox? Why do I have to have "Bravia Sync" and CEC enabled to get sound via ARC from the TV? I don't mind juggling remote controls... In my experience, CEC linking causes more confusion and problems than it's worth.
Any suggestions and experiences you'd like to relate would be great. I have checked, rechecked, and quintuple-checked the input and output formats of every device... bitstream audio, Xbox verifies that all video formats are supported by the receiver and TV, etc... I've been through every menu a zillion times, but the sheer number of hidden settings is overwhelming.
Before going further into madness, I've ordered a new, high quality 30 foot 2.0 HDMI cable to replace the one long one, and enough 2.0 cables to replace all of the short ones. I suppose it's entirely possible that a lot of this could be caused by cables that just aren't up to the task, although I'm baffled as to why so many things DO work.... great picture always, and sound that varies between none (depending upon the standard/enhanced HDMI setting on the receiver) to good but only Dolby Digital, to excellent full-fledged Atmos 5.1, DTS:Neural, or Imax formats. If the cables were at fault, you'd think the picture and sound quality would suffer or not work at all.
I'm all eyes... your thoughts? and.. thank you.