3 Replies Latest reply on Dec 10, 2014 3:01 PM by Skiz

    Cannot get surround sound to work over HDMI to Xbox One


      New NUC with Intel HD 5000 Graphics.  NUC -> HDMI -> Xbox One (pass through) -> optical Toslink -> Denon AVR 3803 5.1


      Installed BIOS update (latest available on NUC download page... 24 I think?).

      Installed Windows 8.1 and all updates.

      Installed all drivers suggested by Intel Driver Download utility.  A few installs show as "failed" but that seems to be an issue with the utility, as all drivers do seem installed per Device Manager.  I can particularly confirm that the Intel HDMI Audio is installed and working.  I did try the below with the default Microsoft driver, but had the same behavior.  I also tried with and without the Realtek Audio driver, but that shouldn't matter since I don't want the audio to go out that device (seems to only have analog out?)


      Installed Windows Media Center.

      Testing AC3 programs (digital broadcast, recordings, mkvs, and WMC setup test) all fail to produce output from center channel or surrounds.  Left and right ONLY.

      Tried the same with KODI / XBMC - same result.  Audio works great, but all sources are downmixed to 2-channel only.

      When I check sound devices, Intel HDMI is default, and it shows the Xbox One as supporting Dolby Digital.  The configuration button only lets me select stereo speakers, but as I understand, that is normal?  (I don't have anything to compare with.)


      Based on prior threads, I have tried disabling legacy boot (as if that would matter).  I have tried all bitstream rates, although again that should not matter.  I have tried all combinations of exclusive and disabled all other enhancements fully.  I have made certain that DVD auto volume is disabled in WMC (also shouldn't be the issue anyway, as KODI/XBMC does not produce surround sound either).


      What are my next steps?  I haven't had issues with a Cable box in this configuration, but I guess I should try my other PC with ATI video card.  If the ATI machine works, it clearly is an Intel issue as I suspect.


      Seems like the Xbox is telling the NUC that it supports DD, but the NUC isn't sending anything but 2-channel PCM, ever.  Unfortunately I can't see much on the Xbox One side and I don't have an HDMI receiver to test with.  But the Xbox One is playing 5.1 audio for videos and games played on the Xbox One.  I tried DD and DTS encoding for the Xbox -> AVR, but that doesn't matter either (and doesn't with other input devices).  If I had realized that the NUC didn't have an alternate digital audio out I might have looked elsewhere, but fortunately the Xbox One performs HDMI -> DD / DTS pretty well so far.


      Please advise.  If there are any steps for eliminating possible culprits, let me know.  Many thanks in advance.

        • 1. Re: Cannot get surround sound to work over HDMI to Xbox One

          How many channels do you get from the audio properties window?


          • 2. Re: Cannot get surround sound to work over HDMI to Xbox One

            Thanks for the quick reply.  It says 2 channels there.


            In case you missed it in my novel, it also does say Dolby Digital in the supported encoded formats.

            • 3. Re: Cannot get surround sound to work over HDMI to Xbox One

              Ok, so I got around to trying with another PC.  The other PC (ATI Radeon) shows exactly the same thing:  2 channel audio, but DD under encoding formats.  I left the enhancements disabled, left exclusive mode enabled, and WMC works fine (DD 5.1 over HDMI).


              Then I went back to the Intel NUC and did the same thing (enabling exclusive mode) -- it also works fine now.  Odd.  I dunno what I did to fix it (maybe it was something else I tried a few days ago PLUS re-enabling exclusive mode?), but it seems to work fine at the moment.  I'm unwilling to tinker further without some research into how it is supposed to work for risk of breaking it again.  I was able to find a thread that states that 2 channel is correct because all Windows sounds will be only in stereo (unless you had one of those old NVidia chips that would upconvert, but nothing like that seems to exist anymore).  However, DD definitely needs to show in encoded formats.  I'm also guessing that receivers cannot get both signals on the wire at the same time -- that may be what "exclusive mode" means?


              I'll leave the thread open a few days in case any ideas or information is out there.


              Edit: I'm marking as answered.  Won't be looking into this much further, but I will keep an eye out if someone has issues and needs to know my configuration.  I spent days on this and it finally works, so I don't want to break it, but I'm happy to share all my settings and driver versions if necessary.