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PoorCadaver Level 1 Level 1 (15 points)

Hi!

 

The headline says pretty much what I want to ask.

I tried to connect my Samsung LED TV to my MacBook Pro using an HDMI cable and an adaptor from HDMI to Thunderbolt (the little lightening-port). I bought an adaptor that supports sound transfer so that should not be the problem. I chose audio-in from the proper HDMI channel on my TV but the sound is still coming out from the laptop and the TV says nada...

 

Anyone have an idea what I might missing?

 

Jonas


MacBook Pro, Mac OS X (10.6.8)
  • tjk Level 7 Level 7 (24,180 points)

    Hi Jonas,

     

    Have you gone into Sound Preferences and selected Output > HDMI?

  • eww Level 9 Level 9 (52,975 points)

    What output device is selected in the Sound pane of System Preferences?

  • PoorCadaver Level 1 Level 1 (15 points)

    It says that the chosen unit does not have channel out for sound (but in swedish)...

  • tjk Level 7 Level 7 (24,180 points)

    PoorCadaver wrote:

     

    It says that the chosen unit does not have channel out for sound (but in swedish)...

     

    Is that a literal interpretation of the message? I'm wondering what "chosen unit" is referring to.

     

    EDIT: you don't have anything plugged in to the audio/headphone jack at the same time, do you?

  • PoorCadaver Level 1 Level 1 (15 points)

    Well, I can chose which unit to "recive" the audio signal. If the HDMI cable is not plugged in there is just internal speakers to chose. But when plugged in I can also chose Samsung, type HDMI.

  • tjk Level 7 Level 7 (24,180 points)

    PoorCadaver wrote:

     

    Well, I can chose which unit to "recive" the audio signal. If the HDMI cable is not plugged in there is just internal speakers to chose. But when plugged in I can also chose Samsung, type HDMI.

     

    I'm not sure where we are.

     

    First connect the adapter to the MBP and the HDMI cable from the adapter to the TV, then go to System Preferences > Sound >Output > select HDMI.

  • PoorCadaver Level 1 Level 1 (15 points)

    1.jpg

    "Den valda enheten saknar reglage för ljud ut" = The chosen unit does not have audio out controls

  • tjk Level 7 Level 7 (24,180 points)

    OK, that appears to be the proper connection and setting. Is it working? What is the other item listed? (Sorry, my Swedish isn't too good.)

  • tjk Level 7 Level 7 (24,180 points)

    PoorCadaver wrote:

     

    1.jpg

    "Den valda enheten saknar reglage för ljud ut" = The chosen unit does not have audio out controls

     

    So it's saying the chosen unit, the Samsung TV, does not have audio OUT controls. So it thinks you're trying to INPUT sounds FROM the TV. Hmmm.

     

    Are you in the Output tab in this window?

     

    Again, do you have anything plugged into any other audio input/output jack?

  • PoorCadaver Level 1 Level 1 (15 points)

    21.jpg

     

    Yes, it's output audio. Nothing in the aux plug.

    This is how the internal speakers looks like. Those have a control where the other has the text.

  • tjk Level 7 Level 7 (24,180 points)

    Thank you for clarifying that.

     

    Just want to make sure it's not something simple: is the TV turned on?

  • eww Level 9 Level 9 (52,975 points)

    tjk: I think the quoted message simply indicates that there is no output volume control provided within the computer when the HDMI connection is the selected output device. This standard message appears because the audio signal sent via the HDMI cable is digital, not analog. When the audio output is digital, whether it's via mini-Displayport or a mini-TOSLink connection to the headphone port, the volume is always controlled externally — by the TV set, amplifier, receiver, or powered speaker system to which the signal is sent, not by the computer. A digital audio signal contains no volume information. The device that converts it to an analog signal and relays it to the loudspeaker(s) must provide the volume information.

  • tjk Level 7 Level 7 (24,180 points)

    eww wrote:

     

    tjk: I think the quoted message simply indicates that there is no output volume control provided within the computer when the HDMI connection is the selected output device. This standard message appears because the audio signal sent via the HDMI cable is digital, not analog. When the audio output is digital, whether it's via mini-Displayport or a mini-TOSLink connection to the headphone port, the volume is always controlled externally — by the TV set, amplifier, receiver, or powered speaker system to which the signal is sent, not by the computer. A digital audio signal contains no volume information. The device that converts it to an analog signal and relays it to the loudspeaker(s) must provide the volume information.

     

    Thanks eww, I was not aware of that. Makes perfect sense.

     

    Poor, I'm not sure where that leaves us, but if the TV is on and the volume turned on/not muted, and still no audio coming through, I'd try a PRAM Reset and an SMC Reset:

     

    PRAM Reset: http://docs.info.apple.com/article.html?artnum=2238

     

    SMC Reset: http://support.apple.com/kb/HT3964

  • PoorCadaver Level 1 Level 1 (15 points)

    I solved it!

    I don't really know why, but I shut down VLC, changed to another DMI port on the TV and then it worked =)

    Case solved

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