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Last reply by 04-19-2013 Solved
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Optiplex FX170 DVI Audio?

 

I tried connecting the fx170 to dvi monitor with speakers, but no audio. Control panel "sound" has one setting to switch to spdif output as default, but nothing there either (no sound).  Does anyone know if this machine is even capable of carrying audio through the DVI?  Thanks in Advance 

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601

And as far as I can see, it seems that DVI must support HDCP to carry audio.

Google search "dvi must support" for details...

View solution in original post

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HDMI Audio via HD PCI Audio Codec has been possible since the radeon 2K series and up on the ATI side of the fence, and Nvidia since the second revision 8800GT VIA an HDMI Video out , or via an DIGITAL connectionca from the HD AUDIO BUS onboard/soundcard on GPU. i dont think nvidia had a built in soundcard like ATI, until fermi. You cant get any analog audio from a DVI cable - you MUST have a DVI to HDMI adaptor (if its ATI, then an ATI branded one) and a HDMI cable. There are NO Monitors or TV's Whatsoever that have DVI AUDIO INPUT.  Which Pins They use for Audio is anyones Guess but its NOT Standard and its not passive aka they likely use HDMI power and convert the signal.

There is NO DVI Audio standard.

 


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View solution in original post

Replies (8)
4 Ruthenium
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Hi placy,

DVI(port) cable carries only digital video signals and does not support audio. You will need to connect a 3.5mm cable from the headphone out port to the monitor speaker to obtain the sound from the monitor.

Please let me know if you need further assistance.

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Thanks Dell,

   Are you saying that DVI doesn't support audio, or that this particular machine doesn't support DVI audio?  Online research states that DVI audio is optional, which is the reason for my inquiry.  

Here's proof:
http://www.ebay.com/itm/DVI-Cable-HD-Audio-Video-PC-Home-Theatre-Male-To-Male-6ft-/221177370893?pt=U... 

thanks in advance,
placy

  

2 Bronze
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602

And as far as I can see, it seems that DVI must support HDCP to carry audio.

Google search "dvi must support" for details...

10 Diamond
601

DVI Does not have Audio signals.  HDMI Does.

 


Report Unresolved Customer Service Issues
here

I do not work for Dell. I too am a user.

The forum is primarily user to user, with Dell employees moderating
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10 Diamond
601

And as far as I can see, it seems that DVI must support HDCP to carry audio.

Google search "dvi must support" for details...

HDCP is a VIDEO standard not an AUDIO standard.

There is no such thing as DVI audio.



High-bandwidth Digital Content Protection (HDCP; commonly,
though incorrectly, referred to as High-Definition Copy(right) Protection)
 is a form of digital copy protection developed by
Intel Corporation to prevent copying of digital video content
as it travels across connections.



Pin 1 TMDS data 2− Digital red− (link 1)  
Pin 2 TMDS data 2+ Digital red+ (link 1)  
Pin 3 TMDS data 2/4 shield   
Pin 4 TMDS data 4− Digital green− (link 2)  
Pin 5 TMDS data 4+ Digital green+ (link 2)  
Pin 6 DDC clock   
Pin 7 DDC data   
Pin 8 Analog vertical sync   
Pin 9 TMDS data 1− Digital green− (link 1)  
Pin 10 TMDS data 1+ Digital green+ (link 1)  
Pin 11 TMDS data 1/3 shield   
Pin 12 TMDS data 3- Digital blue− (link 2)  
Pin 13 TMDS data 3+ Digital blue+ (link 2)  
Pin 14 +5 V Power for monitor when in standby  
Pin 15 Ground Return for pin 14 and analog sync  
Pin 16 Hot plug detect   
Pin 17 TMDS data 0− Digital blue− (link 1) and digital sync  
Pin 18 TMDS data 0+ Digital blue+ (link 1) and digital sync  
Pin 19 TMDS data 0/5 shield   
Pin 20 TMDS data 5− Digital red− (link 2)  
Pin 21 TMDS data 5+ Digital red+ (link 2)  
Pin 22 TMDS clock shield   
Pin 23 TMDS clock+ Digital clock+ (links 1 and 2)  
Pin 24 TMDS clock− Digital clock− (links 1 and 2)  
C1 Analog red    
C2 Analog green    
C3 Analog blue    
C4 Analog horizontal sync    
C5 Analog ground Return for R, G, and B signals



 


Report Unresolved Customer Service Issues
here

I do not work for Dell. I too am a user.

The forum is primarily user to user, with Dell employees moderating
Contact USA Technical Support


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Diagnostics & Tools

2 Bronze
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601

Read the description in this video:

10 Diamond
602

HDMI Audio via HD PCI Audio Codec has been possible since the radeon 2K series and up on the ATI side of the fence, and Nvidia since the second revision 8800GT VIA an HDMI Video out , or via an DIGITAL connectionca from the HD AUDIO BUS onboard/soundcard on GPU. i dont think nvidia had a built in soundcard like ATI, until fermi. You cant get any analog audio from a DVI cable - you MUST have a DVI to HDMI adaptor (if its ATI, then an ATI branded one) and a HDMI cable. There are NO Monitors or TV's Whatsoever that have DVI AUDIO INPUT.  Which Pins They use for Audio is anyones Guess but its NOT Standard and its not passive aka they likely use HDMI power and convert the signal.

There is NO DVI Audio standard.

 


Report Unresolved Customer Service Issues
here

I do not work for Dell. I too am a user.

The forum is primarily user to user, with Dell employees moderating
Contact USA Technical Support


Get Support on Twitter @DellCaresPro


Diagnostics & Tools

2 Bronze
2 Bronze
601

Thanks everyone for taking the time to post and to clarify.  I'm using DVI to HDMI and audio cables (2) for now, but also ordered the ATI adapter just for the hell of it.      

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