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View Full Version : A7V8X spdif problem


t1n0m3n
02-03-2003, 07:36 PM
No one seems to know an answer to my problem.
I have searched the internet for about a month now.
I cannot get a reply from ASUS.
The original thread is here :
http://www.experts-exchange.com/Hardware/Desktops/Q_20462286.html

I bought an ASUS A7V8X motherboard.
It seems to work great except for the sound.
I have a JVC receiver connected to the S/PDIF out on my motherboard (my old motherboard was connected this way also.) I have the receiver set to "Digital Auto" (which means it auto-configures for any digital signal.) My previous motherboard worked this way (MSI K7N420.)

Whenever the computer tries to play a sound, the receiver turns on the front two channels and shows that it is receiving an LPCM signal (which I can get to come on all the time if I set the S/PDIF out to "Digital/Analog" versus "Digital Only" in the realtek utility) and then goes back to "No Signal."

I am running WinXP Pro SP1, DX9 (I tried DX8.1 that came with SP1 also.)
I am running the realtek alc650 A3.38 drivers.
I tried the asus drivers as well, but I got the same thing. I am running the 1010 bios. I have also tried the 1011 beta 8 bios.
I have tried running both with and without the BLine caps, and have had no change.
I have MIDI enabled in the bios.

Thanks
t1n0m3n

t1n0m3n
07-30-2004, 07:37 PM
OK, since no replied to this, I am guessing no one knows the answer. I found my answer on a one on one with creative's support. The A7V8X motherboard cannot 5.1 upmix. Creative's Audigy 2 can, but only if you use the analog outputs. AC97 sound and Creative soundcards can not up mix 5.1 over spdif like the nforce boards can.

vee_ess
07-30-2004, 10:28 PM
Sorry, I never saw this. It does that because you are using an optical cable. The optical sensors will have dramatically shorter lives if they are constantly on, so to counter this, the standard for them enables them to turn on and off for when there is no sound (the output stops sending a signal). There is a slight delay, and always will be when using this standard. The better digital sound connection when taking this into account, is digital coax. But then again, the IEEE 1394 for Audio standard will have potentially the best sound (with support for all channel configs up to 10.2), no question.