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Not getting 5.1 Audio via HDMI

Discussion in 'DIRECTV HD DVR/Receiver Discussion' started by hwilker, Nov 3, 2009.

  1. DoctorCAD

    DoctorCAD Cool Member

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    Aug 10, 2009
    Wow, this is really interesting, as I am having exactly the opposite issue with my Onkyo 507.

    If I got this right, when the OP uses HDMI from the HR 22 to the A/V receiver, he does not see DD 5.1 on the receivers screen. If he does HDMI to the TV and digital optical (or digital coax) to the A/V receiver he does see DD 5.1 on the receivers screen.

    If I hook HDMI up the first method, HR22 and Blu Ray to A/V and HDMI to TV, I get DD 5.1 on my receivers screen. I get no sound to the TV speakers (and that is a problem to my wife but not me) but full surround sound through my Polk RM10's. Trying to correct the TV speaker issue, I changed to the second method, HDMI to TV and optical to A/V receiver. I get sound to the TV speakers now, but my A/V receiver only shows PCM. I can adjust it to Neo6, but that isn't a real surround mode. I have no DD 5.1 with this hook up method.

    Interesting that we can have exact opposite results!!!!!!
     
  2. CCarncross

    CCarncross Hall Of Fame

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    Very few tv's will pass DD5.1 out of the optical port when input via HDMI, that optical output is strictly to get DD5.1 sound to your a/v receiver when using the tv's internal tuner in most cases.
     
  3. DoctorCAD

    DoctorCAD Cool Member

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    Aug 10, 2009
    No, I have the optical port on the HR22 connected to the A/V receiver.
     
  4. jaguar325

    jaguar325 Legend

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    I got a Yamaha 2065 Network Receiver over the holidays and have been struggling with DD over HDMI ever since. I have concluded that the problem is with the HDMI EDID "handshake" between the HDMI source and TV -- not the A/V receiver.

    For anybody having this problem who has not done so already, take every menu option available (on the TV) to TURN OFF the TV's speakers. Your best shot at fixing the problem is to convince the source device that the TV is in display-only mode. One of my conclusions is that with TV speakers on, the HDMI cable is carrying back a signal to the source device saying, in effect; "I am a TV with 2 speakers. Even though I can accept digital audio input (which does not necessarily mean Dolby Digital 5.1), send me 2-channel sound information only". The tech support guys at Yamaha and Gefen seem to agree that the A/V receiver does little to get in the way of the information flow between the HDCP devices (DVR and TV), so it is likely NOT the culprit.

    My experience is with an HR22 and HR20, both going through relatively expensive, high-performance HDMI splitters. This is because I send HDMI to the A/V receiver in my greatroom (connected to a Mits LCD) -and- to another Mits LCD in a bedroom (this one has the built-in sound bar so the HDMI connects directly to it). I continue to see the same symptoms - reset everything (including splitters) in the greatroom, turn on the A/V receiver and GR TV - everything works great, including confirmation from the Yammy that I'm getting DD5.1. [Note: whomever made the comment about ensuring you are on a true DD5.1 channel is right, many D* channels show the DD symbol on the upper right but are not really doing anything more than stereo - my surefire way to know I have DD5.1 is to tune to any HD movie in the 500's] Anyway, after getting everything going in the GR, I turn on the TV in the bedroom and, guess what? The A/V receiver starts showing PCM. Switch to the other DVR and follow the same sequence -- same outcome.

    I researched the TV's sound bar and found that, although it puts out great sound (when accompanied by my M&K sub), it is SURROUND SOUND -- aka: PCM. I have concluded this TV is the offender. I tried turning off the TV sound but for some reason it is still getting word back to the source that it wants 2-channel digital input and my splitters are complying... "dumbing down" the audio signal they put out to both rooms. Since I know I can sustain a DD5.1 connection with the GR TV (speakers turned off), I am getting ready to try a new splitter from Gefen - very pricey but it's the only one I have found where you can specify the TV that it gets the EDID information from - whatever is plugged into port 1 is where it looks for EDID information. I don't care that the one with the soundbar get force-fed DD because it seems like it knows how to translate it for that TV.

    Hopefully, this is gonna work - fingers crossed.

    Big K

    p.s. Video works great with the splitters I currently own, which have been tested with up to 1080p D* signal running concurrently on both sets with no problems. I got a good deal on those ones so kind of sorry to be replacing them but if it solves this problem, I can stop thinking about it.
     
  5. GregLee

    GregLee Hall Of Fame

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    I know this can happen. Back when I had cable, the Explorer STB system had this bug, which prevented me from using HDMI and getting 5.1 sound. But it was just a temporary problem -- they soon fixed their system by introducing a user settable flag meaning "Send DD 5.1 sound even if the HDMI interface says it is connected to a 2-channel sound device." I think the DD setting in the Hxxx receivers has this meaning. At any rate, I never had this problem after I switched to DirecTV. I still think your AVR is at fault.
     
  6. jaguar325

    jaguar325 Legend

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    Jan 2, 2006
    Yes, as hoped, the Gefen HDMI splitters solved my 5.1 problem. The Yammy receiver is staying on DD solid all the time now. I cannot say for sure whether this has to do with their ability to look for a specific TV for EDID information or if they do something different with the splitting than my original ones. All I know is that it works now and I don't think the receiver was the issue. One thing the guy at Gefen told me was to make sure I used their option to specify "external EDID" (meaning: get this information from connected equipment - not their on-board, pre-programmed EDID info which is PCM only). It worked exactly as he said -- on-board EDID - no DD, external EDID - stable DD. I wondered if the original splitter was forcing PCM but the reason I don't think so is that it would stay on DD until I turned on the TV with the "surround sound" on it's built-in sound bar.

    Thanks for everyone's input!

    Big K
     
  7. Hagow

    Hagow New Member

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    Jun 6, 2014
    I don't know if the original question was ever answered, but I ended up encountering the same issue.

    Turns out that my TV's passthrough changes the hdmi's 5.1 signal into Stereo PCM before spitting it back out the SPDIF output to my receiver.

    That seems to explain why running optical direct from my satellite box to the receiver gets me 5.1 successfully, while running the signal using hdmi to my tv and then from the tv to the receiver using optical gets me stereo pcm only.

    This article suggests that you may or may not have this problem depending on the model of TV you have that is handling the audio passthrough. http://www.cnet.com/news/20-tvs-tested-which-sets-can-pass-surround-sound-to-a-sound-bar/

    Hope this helps.
     
  8. texasbrit

    texasbrit Well-Known Member

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    Yes, most TVs will not output DD5.1 through their optical output when the signal comes in thru HDMI. In the last couple of years we've seen more TVs passthru DD5.1, but most still don't. None of my three HDTVs will pass thru DD5.1.

    You can usually find this fact buried somewhere in the TV user manual if you look carefully enough.
     
  9. peds48

    peds48 Genius.

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    the SPDIF output is made so you can get DD5.1 via OTA
     
  10. texasbrit

    texasbrit Well-Known Member

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    The TV's Dolby Decoder is part of the OTA chipset....
     
  11. peds48

    peds48 Genius.

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    Exactly
     
  12. RalphJ

    RalphJ New Member

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    Tulsa, OK
    I have read this entire thread. Without going into my entire rig, I just switched from using U Verse to Direct TV. When I was using U Verse, the Dolby 5.1 was working fine. It worked awesome cool on the NBA finals. It does not seem to work at all on Direct TV. With U verse, I just set my receiver to auto detect and it switched the Dolby 5.1 on when it was there.

    I am using the same receiver, TV, and cables with Direct TV.

    After reading the thread, I really think the problem is with Direct TV. They need to deal with it.
     
  13. texasbrit

    texasbrit Well-Known Member

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    Have you set the DirecTV box to output DD5.1?
     
  14. WestDC

    WestDC Well-Known Member

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    Feb 9, 2008
    First-Welcome to the site :righton:

    First Not all channels are Dolby 5.i (however) -What channel are you having problem with? Do you have DVD/BLU ray player attached -Again try one of these and see if that detects 5.1 since you have changed a lot of setting it might have changed something - I'm getting 5.1 on HBO-Starz so you should be able to as well TBS - May or may not be 5.1 all times but when they are the show infomation on the show broadcast at the begining of the broadcast.

    Have you gone into the receiver Menu and turned Dolby on? press menu -setting- Audio -
    What Model receiver?
    What model TV & AVR are you using -I ask Because perhaps others may be able as well
     

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