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Windows 7: dvi connection to tv = no sound

13 Sep 2009   #11
UKMedia

Windows 7 Ultimate 64Bit (SP 1)
 
 

USMC Rifle Expert - 18 awards

I ask for that didn't I...lol


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13 Sep 2009   #12
benstevensuk

win7 / win7 / win7 / win7 / vista / xp
 
 

all of those seem possible. i havent had a chance to play for a few days. when i have a proper look i will get back to you with specific graphics cards and what-not. i think this pc was (almost) hand built, so it could be almost anything.

just so you know, its not just the hdmi dvi cable that doesnt produce sound. i attached a headphone to phono rca cable adapter before buying the dvi cable. i could get sound, but only as a seperate source to vision, although that might be my tv picking things up and putting them in different places. my aim (obviously) is to get sound and picture on the same channel, preferably using the same leads. but since using the dvi out no sounds comes from the headphones jack either. i will check again.

cheers everyone
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13 Sep 2009   #13
Anthony

Microsoft Community Contributor Award Recipient

MS Windows 7 Professional 64-bit SP1
 
 

Quote   Quote: Originally Posted by benstevensuk View Post
i have connected to a tv through hdmi by way of dvi connection. i cant get any sound through the tv.
any ideas?
Cant be done, DVI is video signal only, HDMI is audio & video.

If your using DVI then you need to connect your sound card to your TV as well!!
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13 Sep 2009   #14
stormy13
Microsoft MVP

Win 7 Ultimate x64
 
 

Quote   Quote: Originally Posted by Anthony View Post
Cant be done, DVI is video signal only, HDMI is audio & video.
Yes it can. See Antman's post on the 1st page of this thread. Any ATI card from the HD2xxx series and up, and most of the 9xxx series and up are all capbable of passing audio over the DVI connection. Only thing is it needs the adapter that comes with the card(s), any old DVI/HDMI adapter or cable won't work.

Also looks like we're still guessing as to what kind of hardware the OP is trying to make this all work on. Would help immensely if we knew if his video card, etc is even capable of passing audio over HDMI.
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13 Sep 2009   #15
Antman

 

Quote   Quote: Originally Posted by Anthony View Post
Cant be done, DVI is video signal only, HDMI is audio & video.

If your using DVI then you need to connect your sound card to your TV as well!!
Gather your facts.
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13 Sep 2009   #16
Antman

 

Quote   Quote: Originally Posted by ratePV View Post
I've solved the problem, so why argue?
DVI can transmit sound and video and is HDCP compatible,...the only thing to do is to connect a 2-pin cable to your graphic card and sound card...
thread solved
No one is arguing. Plus, you solved a problem for a single card type and the solution is not the same for all card types.

What is being pointed out here is that a blanket statement, an incorrect blanket statement, will not survive scrutiny.

What you are seeing as an argument is simply an effort to prevent any additional occurrences of things like this:


Attached Thumbnails
dvi connection to tv = no sound-capture.png  
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13 Sep 2009   #17
Antman

 

Quote   Quote: Originally Posted by ratePV View Post
True, but that doesn't mean someone should post xyz number of pages containing only message type "YOU ARE WRONG!"

I like small threads with simple solutions and not flame wars...
dvi connection to tv = no sound

Perhaps we are reading different threads. If only it was titled differently.
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21 Oct 2009   #18
sidelong

w 7
 
 
Sound via DVI

I can state categorically that on my system sound is provided on the computer DVI output. I have the DVI monitor socket on my Zotac GeForce 9300-ITX connected via a DVI-HDMI lead to one of the HDMI sockets (it does not matter which) on my LG 42LF7700 HDTV. On booting the computer the TV receives both video and sound over this connection, and a very good monitor it makes. The computer is running Windows 7 RC1, and I have a Hauppauge Nova-TD Stick dual DVB-T tuner plugged in to a USB port. Media Center provides both TV and music, which both work fine, until....
As soon as I switch the TV input from HDMI to either Satellite or Antenna (this TV has both types of tuner), and then back to HDMI again, the computer sound disappears. It can only be restored, it would appear, by rebooting the computer. Inconvenient to say the least.
The only clue I have found is that, in Control Panel/Sound/Playback, NVidia HDMI Out is indicated as 'unconnected' when computer sound is missing from the TV, whereas normally it shows as 'connected' and is the default device.
I have reloaded the NVidia drivers more than once, and in Device Manager both Nvidia and Realtek drivers show up as the best available. I can not think of anything else to try at the moment. All comments will be welcome.
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21 Oct 2009   #19
smarteyeball

 
 

Quote   Quote: Originally Posted by sidelong View Post
I can state categorically that on my system sound is provided on the computer DVI output.
No, sorry mate, but that simply cannot be. DVI connections do not carry sound signals. Period. Are you using a HDMI-DVI adapter?

Quote:

DVI - Digital Video Interface
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
No sound.

DVI plug:
dvi connection to tv = no sound-762px-dvi_connector.jpg

DVI-HDMI adapter:


Attached Images
dvi connection to tv = no sound-750px-adapter_dvi_hdmi_s7302224_wp.jpg 
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21 Oct 2009   #20
sidelong

w 7
 
 

Then perhaps you would care to explain how the sound signal is getting from the computer to the TV/Monitor. There is no other connection, and, no, I am not using an HDMI/DVI adaptor. Are you certain that the specification you cite applies to all the latest variants of DVI?
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 dvi connection to tv = no sound




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