HT1338 audio output defaults to optical digital-out port
M audio out defaults to optical digital-out port; I cannot select internal speakers - it is not in the preferences menu
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
Similar Messages
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My MacBook Pro has no audio. Sounds preferences showing output is Optical digital-out port. How do I change this to built-in speakers?
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 -
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
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.
Ciao. -
HT1338 how do I turn off optical digital-out port?
how do I turn off optical digital-out port?
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.
I then turned my computer back on and...problem solved! The audio worked again like normal, and it was no longer detecting an imaginary "Optical Digital-Out Port" device. The internal speakers once again worked as normal, and the volume could be adjusted.
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.
I'm writing this detailed description to help anyone else in the future with a similar problem. -
Stuck in headphone (optical digital-out port) mode. What do I do? Plugging and unplugging headphone jack no help.
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 -
M-Audio Studiophile AV 40 monitors with imac optical digital out
I'm looking to purchase these monitors for my imac or ones very similar to them and was wondering how I go about hooking them up to the imac. I've read that I would have to use a mini-TOSLink cable to use the optical digital out, but how do I go from that to the RCA on the back of the monitors? Do they make a mini-TOSLink cable to RCA cable? Any help would be greatly appreciated.
aberrant_soul wrote:
I've read that I would have to use a mini-TOSLink cable to use the optical digital out,
but how do I go from that to the RCA on the back of the monitors?
No, the AV 40 inputs are line-level analog RCA; they 'don't understand' digital audio,
and the conversion requires more than a cable -- you'd need an D-to-A converter.
You could run an analog signal to the monitors with just a cheap miniplug-to-RCA
(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.
Looby -
I am aware that iMacs donot support Blu-ray. However, could I use a blu-ray player connected via the audio/optical digital in port to watch blu-ray on my iMac screen ?
You could connect a FireWire Blu-Ray drive and use non-Apple player software.
<http://eshop.macsales.com/search/external+blu+ray>
<http://www.macblurayplayer.com>
<http://www.macblurayplayer.com/download.htm>
<http://www.mcetech.com/blu-ray/> -
this one's probably a bit obscure ... i've been trying to connect my dat (digital audio tape) machine to my mac pro via the optical digital-in port without any success. i'm connecting using a TOSlink digital audio cable connecting the digital output of the dat to the digital input of the mac pro. under sound in system preferences i select optical digital-in port and i would think i should see some level on the input level meter. i have verified that the output from the dat machine is good. anyone have any experience with this? thanks.
Hi,
Just curious, but how did you verify what is coming through the actual toslink cable from the dat? -
Audio (optical Digital Out) Problems
I can't seem to get audio out of my optical out port for some system sounds anymore. I can play iTunes songs but system-alert sounds (iChat open close, trash) don't seem work. I've also noticed that the opening music when I open WoW won't play but then the audio works fine once I log into the game (after I pick a player). Quicktime movies also seem to play fine. If I go into the preferences pane and try the alert sounds, some will work but not all the time. It's not acting as if the file is corrupt since Basso will play one minute but not the next. When it tries to play the sound file all I hear is a slight 'thud' from the speakers.
Any ideas?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.] -
TOSLINK/SPDIF optical digital out problem
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...
I noticed a few things... first off... I also send a signal from my MOTU BACK to my iMac through the iMac's digital IN. With the Digital Output on the iMac, plugging in the TOSLINK cable will automatically change the OUTPUT in Audio Midi Setup to Digital Out... when plugging in the 2nd cable to Digital In, Audio Midi Setup DOES NOT change to Digital In unless you start audio playback, and that's where the 2-3 seconds lag comes in. When you actually hear the playback, if Audio Midi Setup is open... you can see the INPUT switch from Line In to Digital In... and if you stop playback, you can see the Digital In go BACK to Line In about 30 secs later... which should NOT be happening... although technically the Digital in should have NO effect on the Digital Out here anyway... and in truth it doesn't... taking the Digital In out of the equation totally - I still see the same issues... just find it interesting that this is happening.
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...
Can anyone else try to replicate my issue? Try sending a digital signal to another sound card... ?
Thanks -
Quad G5 + Optical Digital Out + ADAT
Hi,
Does anybody know what i need to connect my Quad directly to the ADAT of a Yamaha 01v96 V2 digital mixer?
Apple Developer
Digital data is transmitted to and from the digital audio I/O using optical cables. The physical connectors, commonly referred to as TOSLink, are for both input and output and conform to IEC60874-17. The TOSLink friction-lock type F-05 connectors are available from pro-audio, musician’s supply, hi-fi and other retailers. The 7.5 mm digital optical TOSLink input and output connectors,..., are located on the back of the enclosure.
...The data format for signals transmitted over the optical cable is S/PDIF protocol IEC 60958-3.
Something like this? RME DIGI9652
G5 Quad 2.5Ghz 2GB RAM Mac OS X (10.4.6) Bulldog8 on SpeedTouch 716v5WL router
G5 Quad 2.5Ghz 2GB RAM Mac OS X (10.4.6) Bulldog8 on SpeedTouch 716v5WL routerWell, if you have the dough then this is the PCIExpress solution from Apogee. You would buy the card and an interface (or several), which connects to the card.
You could disable the other FW devices f the KPs are too often. Otherwise, the PCIe-424 and a MOTU interface should be more affordable.
http://www.motu.com/newsitems/the-pcie-424-card-is-now-shipping
Excerpt from above link:
The new PCIe-424 card is available for purchase as part of a 2408mk3, HD192 or 24I/O core system (from your favorite MOTU reseller). Be sure to ask your dealer for the PCIe version of the core system you would like to purchase. PCIe is also referred to as "PCI Express". -
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) -
Switching audio outputs when using optical cables
I have an optical cable out to my main home stereo for listening to music. Sometimes I only want to use the iMac's internal speakers instead of the home stereo. Unfortunately, the System preferences does not seem to allow me to change output sources via the software. The only way that I can find to switch outputs is to physically unplug the optical cable. Given the reported frailty of optical cables, I would rather not have to do this. Is there a way to allow a software change from external to internal speakers without unplugging the cable?
Thanks for any help that you can offer!Does not seem to be any software control of multiple outputs. Just have to unplug the output for the internal speakers to come back to life.
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Can I enable both a bluetooth audio device and digital-out port at the same time?
Hi! I just got a bluetooth speaker and want to use it at the same time as my audio-out port which drives speakers in another room. In preferences, the iMac wants me to choose one or the other... Is there a way to enable both at once?
Thanks!You probably should not be using a keyboard bluetooth profile for a scanner, I am not a developer for apple so do not know the location for you to find out the correct profile you should be using for an input device that is not a keyboard. Sorry,
I am sure if you navigate the apple developer site you will probaly finmd what you're looking for.
https://developer.apple.com -
How do i turn ON digital out port on appleTV
Just got my new apple tv ( latest version). I have connected hdmi out to the tv and optical out to my old A/V receiver. I have also appropriately made all the assignments on my receiver for optical in. Not getting any sound from digital out of apple tv to my receiver. Want to use my surround speaker set up. Please advise how to turn ON digital out on apple TV.
Hey gd6784,
There are several versions of Yahoo Mail and they are each a bit different. Without knowing which version you use, it's difficult to help. I'd suggest you look at the [http://help.yahoo.com/kb/index?page=product&locale=en_US&y=PROD_MAIL_ML Yahoo Mail support documentation] as it will have more detailed information.
If you search for [http://help.yahoo.com/kb/index?page=answers&startover=y&y=PROD_MAIL_ML&source=answers.landing_search&locale=en_US&question_box=out+of+office "out of office" in their documentation] you'll see different articles that explain how it works and it will tell you which version of Yahoo Mail each article applies to.
Matt
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