10.4.7 sound output source is broken

If I go to System Preferences -> Sound -> Sound Effects -> "Play alerts and sound effects through", the pulldown menu is grayed out.
Sometimes applications sounds completely disappear and do not play through the speakers. This happens to Mail and the Finder. I didn't have any problems like this before updating to 10.4.7.
Is anyone else experiencing this?

I just verified with 10.4.6, and 10.3.9 which I have backups of that you can only have one output source at a time. So that menu in Apple menu -> System Preferences -> Audio -> Sound Effects will always be grayed out, and auto update itself when you plug in something or remove something from the sound output port of the Mac. There is another bug that causes some programs to not give audio out in machines like yours and mine. Applications -> Utilities -> Audio Midi setup defaults itself to 96 Hz on machines with SPDIF out after certain updates including 10.4.7. Setting it for 44.1 Hz on Audio Output will fix the audio out problem on many a program and restarting. Sometimes you need to also zap the PRAM:
http://docs.info.apple.com/article.html?artnum=2238

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My sound output won't work and headphone port is possibly broken

my laptop has been fine all day and now for some reason the sound output doesnt work. i believe the input does because in system preferences it seemed to pick up my voice. my volume is turned all the way up in every place i can think of and there's nothing. also there's a chance that my headphone jack might be broken but i can't tell because the sound isn't working regularly. please if anyone can help i would appreciate it! thanks!

Hey navzzzzz!
Here are two articles that will help you troubleshoot this issue with your sound output on your computer:
OS X Mavericks: If you can’t hear sound from your speakers
http://support.apple.com/kb/PH13841
Troubleshooting issues with no audio from built-in speakers on Macs
http://support.apple.com/kb/ts1574
Thanks for using the Apple Support Communities. Have a good one!
-Braden

My mac book pro isn't letting out any sound. i went to the settings and it said that have no output source. it was working fine earlier.

i went to the settings and it said that have no output source. it was working fine earlier.
it says this :

nicolejgoulet wrote:
its fine with the headphones in
Valuable information you add.
This is your problem. The mechanical switch is stuck.. Do you see a red light when you look in there? SOme do some don't.
You need to use the headphone jack several times in and outt with the intention of flipping the switch.
Some use a a non metal piece to flip the switch manually- I would recommend caution here.
Otherwise your best bet
Genius reservation http://www.apple.com/retail/geniusbar/
on-line https://getsupport.apple.com/GetproductgroupList.action
check warranty https://selfsolve.apple.com/agreementWarrantyDynamic.do

No sound output from dock connector or headphones but speaker is fine

I've got a 3GS which I've had since October.
Recently, there has been no sound output from the headphone socket - or rather, what does come out is very strange, sounding almost electronically distorted.
I thought that maybe the headphone jack was broken, but now I've found out that the same thing can be heard through a dock when the iPod is connected this way.
I'm fairly sure the dock connector is still fine as the phone charges and can be controlled by the dock etc
Most of the discussions I've found relate to sound not coming from the speaker on the phone, but this is absolutely fine.
Any ideas?

Hi, and welcome to Apple Discussions.
Have you tried resetting the PMU?
I'm not optimistic that this will help any more than the procedures you've already tried, but it won't hurt to try.
Do you still have your OS 9 installation? If so, try booting into OS 9 and see if the problems with the audio are happening there, too. If so, you can bet it's a hardware problem.
How big is your hard drive and how much space remains available on it? If you don't have your OS 9 installation in order to check out whether it's a hardware problem and you have enough available hard drive space, you may want to try an Archive and Install of the OS in order to make sure it isn't an OS X system-wide problem. If that doesn't do it, you could back up your hard drive and restore your software.
All of this may just be spinning your wheels, but it's all stuff you can try before shelling out a lot of money for repairs.

Sound Output Through miniHDMI port

I am trying to link my 13 inch MacBook Pro to my tv so I can watch videos I have on my computer on my TV. I have the mini HDMI cable converter hooked up. I am getting video from the computer to the TV but no sound. I tried a headphone to RCA converter to get sound to the TV and this works if I have the TV source set to AV. However this only sends sound to the TV and not video. And the way the TV source works I cannot select HDMI video input and av sound input. Is there a way I can force sound output through the miniHDMI cable so I can get sound and video through one cable? I would greatly appreciate any information and help anyone can provide.

See,
iMac (Late 2009), MacBook Pro (Mid 2010), MacBook (13-inch, Mid 2010)- HDMI audio doesn't work with some adapters
Mac computers- About HDMI adapters
Mac mini (Mid 2010)- Frequently asked questions about HDMI

G60-230US Laptop - HDMI cable does not provide sound output only video

HDMI cable does not provide sound output only video. I have the following device adapter - Mobile Intel(R) 4 Series Express Chip Set Family, and two sound, video, game controllers - Coexant High Definition Smartadudio 221 and Intel (R) HIgh Definition Audio HDMI. I do not see any option but "Speakers" on the Sound "playback" tab. Not sure what to do to fix

With the cable connected to source, click to select/highlight the Intel HDMI. next click the 'Set default' button.
******Clicking the Thumbs-Up button is a way to say -Thanks!.******
**Click Accept as Solution on a Reply that solves your issue to help others**

Noise on sound output

I'm just trying out an external drive on my Macbook Pro. I happened to have the internal sound output from the Mac connected at the time and noticed that as soon as I connected the drive to the mains, the output became very noisy: as continuous series of clicks at about 15 Hz. I thought it was the drive, but I think it's some sort of grounding issue as connecting my FW interface led to noise on the internal MAc outputs too (a different type of noise!). It seems to happen with either FW400 or 800.
I have no intention of using the output for anything serious - I was just listening to some CDs whilst wiring up - but is this normal?
Best
Gorwel

I'm also experiencing this issue. I have some external speakers (razer mako) connected to the headphone jack on my 15" Unibody MBP (purchased last month). I get some intermittent line noise. Additional hissing and clicking which seems to correspond to activity on the computer (e.g. external drive connectivity).
There is no line noise connecting to my iPhone or other audio source.

How can I change default audio / sound output or remove the displayport audio option?

I upgraded from Mavericks to Yosemite and while I don't have any of the number of issues that see to accompany that move, I've discovered a different one that is not necessarily related to it, but is irritating.
2014 Macbook Pro Retina
I use a thunderbolt to displayport (AKA just displayport) cable to attach a Dell monitor to my mac at the desk.
Prior to this update, the mac ignored the display as far as audio was concerned (the Dell does NOT have audio built in). But now it seems to think it does.
Moreover, it continually switches back to that Sound output in the preferences whenever I plug or unplug an audio source from the audio jack. This is Annoying!
Is there any way to either
1) set the default to prefer the internal speakers / headphones instead of the DP?
2) remove the Sound output for the DisplayPort connection (which is a false connection since the Dell doesn't actually have AUDIO)
Thanks much

I found the com.apple.audio.SystemSettings.plist and Com.apple.audio.DeviceSettings.plist, but can't make sense of either enough to feel confident in altering any entries there. here's the SystemSettings one that seems like it might have something you could change, but...

Can´t get optical sound output from my brand new mini

have connected the MM to an optical input on my Yamaha RX-V659, but I can´t get no sound.
Mac-side: After connecting and turning on, "System Prefs -> Sound -> Output" has changed to Digital Output and says that no output controls are available for this output. I have tried playing from iTunes and DVD Player. In DVD player the option for selecting Digital Output had appeared, and I chose that. When I take a look at the end of the cable I plug into the receiver I see a constant red light.
Yamaha-side: I have tried 2 different optical inputs, and gone over my settings several times. The receiver does not seem to detect digital audio coming in. I tried the Signal Info menu on my receiver, and for another source it output:
PCM, 48kHz, 2.0, Analog
On the optical input it says:
---, ---, 2.0, Analog

I have a similar setup to a Kenwood receiver. You are correct that ALL system sounds (frontrow, system alerts, etc.) will play through to your stereo.
Have you tried switching Toslink cables and/or the toslink to miniplug adapter that is plugged into the mini?
I had a bad cable at one point in time, and a bad adapter at another point in the life of this system. You perhaps tried these things already but I only saw mention of trying 2 different inputs (I assume on the receiver) and made no mention of cables/adapters.
Let me know how you make out.
Message was edited by: CaptTB

Missing Sound Output VIs

Hello all,
I'm trying to create a DLL that reads incoming sound data through my DAQ board and translates it for my sound card. Unfortunately, when I run the control program (LabWindows), I get error messages saying that the LabVIEW Sound Output VIs are missing. Do I need to add another library to my LabWindows project, and if so, which one? If not, why isn't LabWindows (or the LabVIEW runtime engine, if applicable) finding the VIs in my DLL project library?
Thanks!
Slowpoke
Slowpoke
CLAD (believe it or not!), using LabVIEW 8.5
They don't call me "Slowpoke" for nothin'!

Hi Michael,
Sorry for the confusion! Guess they don't call me Slowpoke for nothing...anyway, let me see if I can clarify matters.
The problem is not with the control program, per se. The problem only manifests itself when I call my DLL (created in LabVIEW) from the LabWindows control program. When I call the DLL from a LabVIEW control program, the DLL works perfectly. When I call the DLL from the LabWindows control program, the front panel of the called VI has a broken "run" arrow. When I click on the broken arrow, I get the LabVIEW error message popup. The LabWindows control program itself flags no errors.
I mentioned those VIs only to offer some context for the problem, i.e., in case you were wondering what their functions and purpose were, since they appeared in the error popup; if I muddled things up for you instead, again I apologize. Hope this is clearer!
Thanks,
Slowpoke
Slowpoke
CLAD (believe it or not!), using LabVIEW 8.5
They don't call me "Slowpoke" for nothin'!

Airplay Mirroring no sound output! (MacbookPro Lion)

I have been successfully airplay mirroring with iPad with no problems. However, when I do the same to my MacbookPro Early 2011 , it works only for graphic , but the sound seems to speak only from my Mac. I have already tried to fix this by System preference - > sound -> Output. The problem is when I click to select source for speaker that is airplay for apple TV while I'm airplay mirroring , it always disconnects my Mac from Apple TV and then Apple TV on my TV screen go to standby mode. However, I can steam movie via itunes perfectly. My wish is just to have a graphic and sound come together from the TV when I do the AirPlay for skype or something else other than Itunes. Thanks

Luxurypop, try selecting the audio output before you launch airplay mirror. Please just confirm you are mirroring as you say you have Lion on the title not mountain lion (OS X 10.8). Your macnook pro certainly mirrors but please confirm it is not an OS issue.
Regards
Jules

Change sound output

With my old ibook i could decide what sound outputs i wanted like either headphone or internal speakers and never have to unplug any cables but with my imac i don't have that option. To get the internal speakers to work i have to unplug my external source from my imac which is a pain. i was wondering why this occurs or if this is just a fluke? Is this something with the programming on the imac or is this dealing with tiger? thanx in advance.

If the Sound System Preference is not working, I would try using the program Audio MIDI Setup in your Utilities folder to see if it can fix your problem.

Output source

Hi,
Attached is my diagram. Could you tell me the output impendance of my output source?
My output source is said "current meter" near M1 on the right hand side of the dirgram?
My 6250 impendance is 10Gohm. Why can I just ignore it when I connec ted to this output source impdance of this
digram? Can you explain why I can ignore 10Gohm
I am in a urgent, Many thanks if you reply to me promply.
Attachments:
control.doc ‏62 KB

I'm having the same problem here. I used to have an upgrade from Leopard to Snow Leopard, and it worked just fine. But for several reasons I decided to run a clean install of SL last week. Since I updated to 10.6.2 the sound output device resets as well. Even after deleting prefs, the problem remains.
So perhaps the problem comes only when you do a clean install of SL and upgrade to 10.6.2??

Can not change sound output. Help Please

Well, i've been digging all the forums lately in web. my problem is, i can't change my 'system' sound output to my sound card which is Native Instruments Audio8 Dj.
Let me explain my problem decently. I do the usual procedure, system preferences > sound > n then select the output. but nothing happens. it is always set on internal speakers or headphone or whatever plugged in to the *Built-in Output*. I try switching from audio-midi setup n that doesn't work as well. The system perfectly recognizes the sound card, i can get output from sound card with applications which have their own output settings. But i cant change the system output. I have the latest version of soundflower loaded(this might be causing the problem who knows), i used many soundcards before(or maybe even ex-drivers?) n they used to work until i updated to snow leopard. I also tried trashing the files in macintosh hd > library > preferences > audio >>
and those files *did not regenerate* after restart(like 10 times), so i had to copy them from my imac.(hehe). i tried resetting pram or nvram.(didn't do any good too)And also i tried trashing soundpref.plist which didn't do me any good neither. Now i need that sound card to give me my system output. I don't need drivers of any other ex-sound cards or whatever. My drivers are up to date. And im pretty sure this ain't an hardware fail.
So, any ideas? Thx.

I am having the exact same problem. I have spoken with Apple Care and they are having my case reviewed by "Engineers," apparently. Its very frustrating as I cannot listen to iTunes or any of my video games through my really nice monitor speakers. FYI, I had this problem without installing Sound Flower, since then I have installed it in the hopes that having something different to select it might work but no changes. If I hear any good news from Apple I will be back to let you know. This seems to be a very rare problem as I have only found one other post about this issue.

The sound output does not work on my ipod

Hi There,
I have an Ipod 4 th generation and the sound output no longer works on any device. I've reset and reinstalled the software but nothing appears to work?
Any ideas please?
Serial number: 9C6463XJV9R
Thanks Chris

If none of the 5 R's helped address the issue, it's likely hardware related.
http://www.apple.com/support/ipod/five_rs/
As to what exactly is damaged/faulty, no there is no certain way to tell. It could be the iPod's audio chip or something else on the logic board.
Either way you'll need to have your iPod serviced/replaced either by Apple or a third party company.
B-rock

10.4.7 sound output source is broken

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