KT4 Ultra - How do I enable optical digital out?!

OK, guys, now I'm this far: | | from going totally nuts here. How on earth do I enable digital out on the onboard C-Media soundcard on the KT4 Ultra? I used to have the KT3 Ultra, and that had a special mixer setting that did that trick, but I can't find anything here. I have heard mentioning of an MSI control panel item, but I have none. Is this a fault from my installation of the mobo, or does it not excist?
Hope somebody can help me, I have done without this for quite some time (I hadn't even connected the sound bracket), but with my main optical soundcard blown I really need this now!
Thanks a lot in advance! 8)

Thanks again. I did, and it worked. The amusing thing is that afterwords I tried uninstalling the apps, and the digital still worked. So now I get to keep the digital output without any annoying extra sound apps! :D
My next project is probably impossible: I'm trying to get a Zoltrix Nightingale Pro 6 to work with digital output. I actually had it working nicely side by side with the C-Media interal soundcard (it just renamed the interal soundcard to "C-Media xxx 2"), but I could not get digital output. So my guess is that they are mutually excluding. But I can probably put the Zoltrix in another computer and run that zone (we're talking multi-zone sound system here) from that PC. 8)

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I experienced this same problem yesterday on my MacBook Pro, still searching for a solution, several other posts here indicate people have been experiencing this since at lease 2007. I have yet to find a clear solution.
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Here is another post with some ideas on this
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HT1338 how do I turn off optical digital-out port?

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Just want to report that I too, running 10.6.5 on a MacBook Pro, had the mysterious " Audio Out Stuck On Optical Digital-Out Port" problem whereby I was unable to adjust the volume on my built-in speakers and they were permanently "muted" because the operating system was sending the audio signal to a non-existent device that it falsely thought was plugged in to my unused headphone jack hole. I thought at first the problem must necessarily be software-based because the built-in speakers worked fine when playing the start-up chimes. So I uninstalled something called "Soundflower" which does some mysterious shenanigans with commandeering the internal audio signal so that one can make audio recordings of one's computers' sound effects. But uninstalling Soundflower had no effect. So I uninstalled some other audio-related software, also to no avail. Then I zapped the PRAM, to no avail.
Then I decided to try what some people call "the toothpick trick," i.e. poking around in the headphone jack hole to see if something was stuck in there shortcircuiting it, and initiating the false signal to the OS.
Bingo! Success!
Actually, I did a hyper-sophisticated version of the toothpick trick:
First, I own a home "otoscope," one of those doohickeys that doctors use to look into your ear. One can now buy amateur versions of otoscopes for home use, to looks for kids' ear infections, etc. (They only cost $30 or so.) Anyway, using the smallest attachment designed for babies' ears, I was able to look (with illumination) into the headphone jack hole and yessiree there was a big bunch of dust stuck way deep in there.
So then I took not a toothpick but instead a slender dental prong-pick thingie made of stainless steel, and very delicately was able to snag the clot of dust deep in the hole at the bottom on the first try. Quite a wad!
Then I took one of those rubber ear-bulbs, used for cleaning out your ears, and used it as a micro-vacuum-cleaner: Squeeze the rubber bulb til it is as empty as can be, then place the tip of the bulb at the entrance to the headphone jack hole, then suddenly release my grip: it ***** air out of the tiniest spaces! After doing this a few times, I then did the reverse and blew blasts of air into the hole.
After all this, I looked back into the hole with the otoscope, and it was sparkling clean! Not even the tiniest speck of dust in an area that just three minutes earlier was thick with dust.
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I guess the problem for me really was dust causing a short-circuit. It might very well be the same for you -- so try cleaning out the headphone jack hole as I did.
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M-Audio Studiophile AV 40 monitors with imac optical digital out

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aberrant_soul wrote:
I've read that I would have to use a mini-TOSLink cable to use the optical digital out,
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No, the AV 40 inputs are line-level analog RCA; they 'don't understand' digital audio,
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(analog) adaptor from Radio Shack; but if you want to use the iMac's digital output,
you'll need some sort of external digital-to-analog conversion hardware.
I don't know of any inexpensive stand-alone TOSLINK-to-analog converters, but
there are many USB-to-audio products that would allow you to feed digital audio
from the iMac to the AV 40's -- but through a USB port, rather than TOSLINK.
Search for "USB audio" on amazon.com and/or newegg.com.
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Do you see a red light in the headphone jack?? If you do, then the microswitch is stuck and you need to turn it off. Try poking it with a toothpick.
If you don't see a red light, then try resetting the SMC and PRAM and see if these helps. Here are the links.
http://support.apple.com/kb/ht3964
http://support.apple.com/kb/ht1379

When I unplug Apple headphones from my MacBook Pro sond from internal speakers not work, and system soud preferences displayed: Output: optical digital out port only

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If you see a red light in the audio output port, then the internal switch is stuck. Insert the earphone plug a few times and see if you can trip the switch. If that fails, insert a cocktail stirrer and the like and jiggle it around inside. If that fails, take it to an Apple store and have the technicians at the genius bar do it for you.
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I experienced this same problem yesterday on my MacBook Pro, still searching for a solution, several other posts here indicate people have been experiencing this since at lease 2007. I have yet to find a clear solution.
It appears that occasionally inserting headphone causes this, it turns on the Optical digital-out port feature (red light glows inside the headphone port) and takes away the internal speakers option. Restarting did not restore it, but for some reason after sitting asleep overnight the sound started working again and the internal speaker option return in the Sound - Output Window, and the Optical Digital-out option went away.
Here is another post with some ideas on this
https://discussions.apple.com/message/4160477#4160477

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ring up msi uk
its 2 years so your covered
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Kt4 ultra ati 9700pro only x2 agp locked out

hi
can anyone please help, just brought a kt4 ultra and a 9700ati i cant hightlight the auto in the agp rate set up in the bios..
i have tried all new ati drivers
msi live update says i have newer or same bois
ati control panel only allows me to set x2 max
errrm no jumpers on board to set agp rate
i installed mobo and gpu with a fresh install of win xp
even took ati 9700 out uninstalled driver cleared regdit
replaced with gf3 ti200 installed went into bois
yipee allows me to set agp rate not greyed out on auto
so set to x4 save bios.. uninstall gf3 blah blah....
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it seems to be a problem with the mobo not liking the the ati
dose anyone know if msi know of this problem ..or they have it in hand with possible bios update.
or as mobo is just 2 days old return back to the store and say it dont do what it says on the box..
hehe bit like a ronseal advert
argggghhh the pain please help my head can't take much more
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Originally posted by XorArch
Yep the ABIT AT7 MAX2 works great with my Prophet 9700 pro, just remember it has no serial or paralel ports(which is not a big problem for me), but it does however have 10 USB2 ports, firewire and lan onboard.
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Dunno what the problem is here. I've used a mini-Toslink adapter and cable to successfully send a digital signal to my amplifier with my Macbook Pro and a previous iMac G5 iSight, but recently failed to do the same with my new 24" iMac. The red light and the Sound preferences suggest that the digital output is working, but no sound comes out. The same setup works fine with my MBP's digital output, so I can't explain the problem on the iMac.
Does anyone know of any other ways to test or verify that the digital output is working? Perhaps there is another way to turn the digital output on/off? I'm hoping this is a software issue ...
Thanks.

I'm having a similar problem / issue with the digital outs...
I'm sending a digital signal via a mini-TOSlink adaptor to my MOTU 828mkII ADAT IN... first problem is that unless I set the MOTU's clock to ADAT IN... (and not use it's only internal clock) then I get digital noise when I playback anything on my iMac... since there is no way to set the iMac clock in Audio Midi Setup to External... it's greyed out.
The larger issue is that playback works fine as long as the Audio driver is being used... i.e. iTunes playiing something back. When I stop any audio playback... about 30 seconds later, the MOTU sync light starts flashing as it's NOT receiving a sync signal from the iMac anylonger. Then if I start playback again it takes about 2-3 seconds for the playback to sound. Totally unacceptable...
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Anyhow, I have no advice to help you out rwcoch... I wish I did... this is ridiculous! I'm going to search a bit more and see if anyone else has anything remotely similar...
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Thanks

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In System preferences you have a sound panel option for output there you'll get 2 choices: digital or Built-in, sometimes but rarely this can make a difference. ATH [Apple hardware test on the install disk].
The only other thing that could be separately an issue is the optical port has to be the top one for output [no doubt you've got the one with the glow coming out of it plugged in].
But the digital ports are wired to the logic board, you might try resetting the firmware.
[Restart holding AppleOption+OF: at prompt type: reset-nvram: Mac returns O.k. then type: reset-all.]

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Apple Developer
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HI;
I have a VI into which I feed a DO 9476 task. When I created the task, I selected port 0 (which was the only option). When I run my VI, I get an error that tells me I'm looking for 8 bits yet the task feeds in 32.
See the attached VI and error screen shot.
Any ideas?
Thank you,
Solved!
Go to Solution.
Attachments:
DO_Mon_WLoop_Events_CRead_Task.vi ‏26 KB

4BoysDad,
It seems you are trying to output to the port (which has 32 lines) instead of a collection of lines. When you create the task, instead of choosing Port Output, choose Line Output, and select the 8 lines you would like to write to in the next dialog (shown below).
Drew T.
NIC AE Specialist

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Hi,
I recently upgraded Windows XP machine to Windows Vista Ultimate. On the XP install, I had my Sound Blaster X-Fi Xtreme Music (SB0460) plugged into an external AV receiver via the digital out jack on the back of the card. This all worked fine.
Following the Vista upgrade, the receiver seems to be no longer geting a signal from Windows. None of the cabling was touched so I'm assuming there must be some setting in Vista to enable the digital out, but not for lack of trying, I can't seem to find it.
I've installed the latest drivers from the site and the sound card appears to be working correctly. The sound manager in the Control Panel shows three devices (Speakers, SPDIF Out, and Headphones). I've tried it with Speakers set to default and also with SPDIF set to default, but no joy. On Speakers, I can get sound output by plugging in headphones, but on SPDIF, nothing.
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Any suggestions on how to enable digital out under Vista would be most appreciated.
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vennacher wrote:
In the control panel sound applet select "speakers" and then "properties". On one the tabs there is a check box for "digital I/O". Make sure this is checked as it enables digital out from the flexijack.
Yeah, what he said.

KT4 Ultra - How do I enable optical digital out?!

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