no sound through spdif 2pin connector

Asus Engts250/di/512md3/ww geforce gts25...
July 20, 2011 at 07:10:29
Specs: windows 7 64bit, amd phenomx4 955 blk edit. 8gig of adata1333 ddr3
ok so i have a 2pin spdif connector going from my graphics card to the sound card. i can't seem to get audio though. i have tried the spdif cable both ways. i have enabled spdif in the audio control panel to. i tried to disable the onboard audio in my bios but that didn't work either. gpu is a nvidia geforce 9600 gso and the sound card is a asus xonar dg. i have a pentium d dual core processor and 2 gigs of ddr2 4300 ram installed as well. the motherboard is a d945gccr. i am sure i missed a step somewhere.

pc1 the spdif connector is going from gpu to sound card
pc2 the spdif connector is going from gpu to motherboard

i can't seem to get the audio to work on either of them. all the drivers are current and up to date on both motherboards, gpus and sound card. i can get video, just no audio! i initally tried to make it work with a dvi to hdmi adapter and of course the 2pin spdif hooked up like its suppose to be. when that didn't work, i tried it with the straight dvi cable. i have been troubleshooting this for about 12 hours straight now, with no luck. i have no idea what else to do. please help!

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July 20, 2011 at 07:29:32
Assuming you have the spdif cable connected correctly to the right places...
(READ your manual for whatever the spdif headers are on)

You probably need to change the default sound output device to spdif from whatever it is set to now.
Control Panel - on the right of that screen have it display as Small Icons or Large icons, NOT Categories - click on the Sound icon - change the sound output device setting.
You may also need to un-mute the volume control for spdif there, and/ or increase it's volume from minimum.

"i tried to disable the onboard audio in my bios but that didn't work either."

You can disable the onboard sound in the bios if you want to, but you don't need to. (It has to be enabled if the spdif sound capability is built into the mboard, only.)

Win 95 and up supports you having more than one audio device connected to the system, but only one of them can be used in Windows at a time.
Whatever sound device you installed the drivers and associated software for last becomes the default sound device Windows uses, If you have the drivers and associated software for more than one sound device installed, you can change which sound device Windows uses for input or output in Control Panel - Sound. In the case of spdif sound, you probably have to change default settings, it's probably not made the default output device by default.

A HDMI connection on both ends has DVI video and a sound connection is available.
A DVI connection on both ends, or on one end, the other end HDMI, has no sound connection available.
A DVI port, or a HDMI to DVI adapter in a HDMI port, has no sound connection available.

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July 20, 2011 at 07:45:14
i think the problem is enabling the spdif connector , so that it can actually pass the audio. problem is, that there is no option on either computer for that.

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July 20, 2011 at 08:22:15
READ your manual for whatever the spdif headers are on, e.g. the Asus mboard manuial. .

The spdif header must be connected to a externally available spdif ouput port, and there must be something connected to that port that produces sound from a spdif input, .
If the mboard or graphics card has a spdif header, it won't work to plug the spdif cable into a spdif header for a sound adapter unless the header for the sound adapter is for spdif INPUT. Most spdif headers are for spdif OUTPUT.
I don't know if spdif output is what is available on a HDMI connection.

The sound software MUST be installed properly. It's very common for people to have NOT done that correctly.

The sound software ALWAYS includes both the required drivers AND associated software that must be installed properly along with the drivers.

You are supposed to install the sound software properly by either
- using the sound software installtion program that is on the CD or DVD that came with it
- running a sound software installtion download you got from the manufacturer of the sound device's web site, or if it's a sound adapter built into the mboard, that you got from the downloads on the mboard manufacturer's or the brand name system's web site listed for your specific model.

DO NOT install drivers for any sound adapter when Found New Hardware pops up for the device BEFORE you have installed the sound software !

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July 20, 2011 at 12:12:10
Search the web with SPDIF to find info about it.


Everything You Need to Know About the SPDIF Connection


SPDIF, also written as S/PDIF, stands for Sony/Phillips Digital Interface, and is an interface to transmit digital audio.

In Control Panel - Sound, you need to make digital sound the default Playback sound adapter


In Vista (it's probably the same in Windows 7) for a computer I have with an Asus M3A78 Pro mboard, which supports SPDIF, under Playback devices it presently has Speakers as the default device (a checkmark beside it) , I can also select any of these and set them to be the default device

Digital Output Device (HDMI)

Realtek Digital Output

Realtek Digital Output (RCA)
( to a female RCA port - an RCA jack).

I suspect I would need to make either of the last two the default Playback sound adapter.

I have nothing I can connect the SPDIF RCA jack to that will produce digital sound.
I have nothing other than mboards and graphics cards that have a HDMI port.

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