No built-in audio output

Last week I connected via DVI port to a projector. From that time my built-in audio output has not worked. What would cause this? What is listed in the audio output window is "Digital output--built-in output.
I have all the updates and permissions done

Hi Tony,
Try deleting these files: com.apple.audio.DeviceSettings.plist and com.apple.audio.SystemSettings.plist
Users/YourName/Library/Preferences. Drag these files from the Preferences folder to the Trash, empty the Trash and reboot. See if your audio output functions as it should.
Carolyn
Message was edited by: Carolyn Samit

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Built in audio output (speakers) are playing through different channels.

My built in audio output (speakers) are playing through different channels. How do I make them both play through the same channel? It has something to do with the audio midi setup. When i click "Configure Speakers" on th Built-In Output I don't get the option of "-" for which channel the audio should go out of, I just get "1" or "2" as an option. This happens when i select them to be both stero and multichannel speakers. Any ideas on how to fix it?

Is there a red light glowing inside the jack? It sounds like a faulty jack. Read this:
http://forums.macrumors.com/archive/index.php/t-232084.html
-Bmer
Mac Owners Support Group
Join Us @ MacOSG.com
iTunes: MacOSG Podcast
 An Apple User Group 

Airplay - use built-in audio output while mirroring

Yesterday I tried to configure my headless mac mini to use airplay mirroring to my ATV3. This in general works beautifully.
The thing is, I use this machine as hifi-transport and want to continue using the local audio output (S/PDIF / Toslink / USB DAC) during mirroring.
I could not find any way of doing this. in Audio MIDI mixer, the sound output switches to Airplay as soon as I enable mirroring. If I then use the Audio MIDI utility to switch back oudio output to the built-in output, it automatically deactivates the mirroring session.
Even creating an aggregate and/or multiple output audio device in Audio MIDI utility and put together Airplay output and the built-in output, it does not work...
Anybody have any idea how to solve this?

I like to chime in on this one too as I was just about to create a thread of my own.
My current home situation:
living room: airport express connected to receiver
work room: macbook pro with mountain lion in combination with Spotify
I would like to have the sound of spotify be sent simultaneously to the optical out of my macbook and the airport express in the living. So I created an aggregated device using this support file: http://support.apple.com/kb/HT3956# - i ticked the box on both AirPlay and Built-in Output but there is no sound getting transfered to the Airport Express.
If I only tick the Airplay checkbox it works perfectly in the living room and if I only tick the Built-in it works perfectly on the macbook. But not both checkboxes combined.
Screenshots for clarification to be found here: http://imgur.com/a/K0KND#0
screenshot 1) works as intended: sound on airport express via AirPlay
screenshot 2) does not work as intended: only sound on macbook pro
screenshot 3) works as intended: sound on macbook pro via Built-in output
So any clue why the setup from screenshot 2 does not work?

Macbook pro 2012 isn't recognizing the built in audio output

It is only recognizing the headphones jack, even when it is unplugged, there are no red lights and when I unplug the phones it is just like they were plugged, I ow this because it doesn't change the volume like it was suposed to do if it was recognizing the built-in output
i

Welcome to the Apple Support Communities
First, try plugging and unplugging the headphones again, and check that "Internal Speakers" appears in System Preferences > Sound > Output.
If it doesn't work, reset the PRAM > http://support.apple.com/kb/HT1379 This will reset the speakers settings, so it will work properly when you start in OS X. If not, open System Preferences > Sound > Output, and choose "Internal Speakers"

Built-In Audio Output Speakers Don't Work

My Built-In speakers don't work on my Macbook Pro anymore.
I plugged headphones into the headphone jack last night when watching a film, now all of a sudden when I remove the headphones my built in speakers dont work.
When I try to turn up the volume I get the circle with a line through it telling me it can't be changed.
I went to system preferences and it says my speakers can't be configured and my Master volume track is un-highlighted so It can't be changed.
Whats going on?
Macbook Pro 15.4" 2ghz Mac OS X (10.4.8) 1GB, 100GB HD, 256MB Video, Final Cut Studio 5.1, Panasonic DVX100, 1TB EXT HD

Is there a red light glowing inside the jack? It sounds like a faulty jack. Read this:
http://forums.macrumors.com/archive/index.php/t-232084.html
-Bmer
Mac Owners Support Group
Join Us @ MacOSG.com
iTunes: MacOSG Podcast
 An Apple User Group 

Noise on audio output when using the power adapter

I'm a musician and use my mid-2007 MBP 15" in my live rig. When I use the power adapter, I hear a buzz, sometimes accompanied by a slightly louder buzz that cycles on & off about 1x/second. There are a few weird things going on here:
1. The buzz does not happen all the time. That leads me to think it may be noise in the AC line that the adapter is plugged into.
2. The noise is heard when I use both the built-in audio output AND an external USB audio interface.
In any case, when I disconnect the power adapter and run my MBP on battery, the noise goes away completely. I can probably do this on most gigs, but I'm a little nervous since I run a FW drive, an external USB audio interface, and my midi keyboard (powered by USB) so I am putting a little heavier than usual load on the MBP's battery.
As I said, this may be a noisy AC line. Another guess is that it's the PMU inducing noise into the audio circuitry. I'm hoping a simple AC line filter can help me but I thought I would ask here first in case anyone else has dealt with this. TIA for any help!

I had a similar problem and fixed it with a $5 universal travel adapter. Yours might be different but here's my situation. Try it for little cost and see if it works.
I'm also a muso with an iMac running external KRK speakers via USB Mbox2. Previously I had a Macbook Pro and the same audio problem. I've been putting up with a very low volume, high pitch noise until now. I simply plugged the Mac power cord into a universal travel adapter which then goes into the wall. For Aussie users there is an adapter on ebay that will allow a 3 pin Aussie plug to go into female side and has a two pin Aussie male on the other. For US users you can probably get the same although there is a 59c product that will do the trick called a ground lift adapter. Applecare actually agreed this was the best fix and confirmed there would be no problems with power supply or Mac performance. What a gem ! God knows I've looked into all kinds of alternatives that could have cost hundreds instead of $5.

Default audio output has switched

having only recently upgraded to tiger (yeah yeah i know i'm late) i have noticed that my internet browsers and also realplayer defaults to playing audio out of "built in audio" output and when i switch it back to my firewire 410 output it doesnt work.
is there some OS related pref that i need to alter to get my browsers to recognise my audio interface? i dont know for sure that it is moving to Tiger that has done this but it seems likely as it never did anything like that prior to the upgrade...
any ideas?

thats the problem though, coz everytime i click it back to my firewire 410 in system prefs/sound/output i get no signal!
it only outputs from the default mac output, which means i either listen through that tiny speaker on the front, or have to run a mini jack out of that socket back into my desk.
the sound is awful though, really noisy and clipped. sounds like it was run through logics bitcrusher a couple of times..

What is "Analog Output - Built-in Audio"?

Hi,
In Gnome System Settings -> Sound there are three pulse sinks: HDMI (Built-in Audio), Speakers (Built-in Audio), and Analog Audio (Built-in Audio).
When I plug-in headphones into the laptop, "Speakers" change to "Headphones". The behavior is what I want, but I was just confused as to what "Analog Audio" does? As far as I can tell it doesn't do anything. In Ubuntu 13.10 I didn't have the Analog Audio sink.
Last edited by SimFox3 (2014-01-07 01:48:31)

# 'pactl list'. Again the analog-stereo port is the one I need to know more info about:
analog-input-internal-mic: Internal Microphone (priority: 8900, latency offset: 0 usec)
Properties:
device.icon_name = "audio-input-microphone"
Part of profile(s): input:analog-stereo, output:analog-stereo+input:analog-stereo, output:hdmi-stereo+input:analog-stereo, output:hdmi-stereo-extra1+input:analog-stereo, output:hdmi-surround-extra1+input:analog-stereo
analog-input-mic: Microphone (priority: 8700, latency offset: 0 usec, not available)
Properties:
device.icon_name = "audio-input-microphone"
Part of profile(s): input:analog-stereo, output:analog-stereo+input:analog-stereo, output:hdmi-stereo+input:analog-stereo, output:hdmi-stereo-extra1+input:analog-stereo, output:hdmi-surround-extra1+input:analog-stereo
analog-output: Analog Output (priority: 9900, latency offset: 0 usec)
Part of profile(s): output:analog-stereo, output:analog-stereo+input:analog-stereo
analog-output-speaker: Speakers (priority: 10000, latency offset: 0 usec, not available)
Properties:
device.icon_name = "audio-speakers"
Part of profile(s): output:analog-stereo, output:analog-stereo+input:analog-stereo
analog-output-headphones: Headphones (priority: 9000, latency offset: 0 usec, available)
Properties:
device.icon_name = "audio-headphones"
Part of profile(s): output:analog-stereo, output:analog-stereo+input:analog-stereo
hdmi-output-0: HDMI / DisplayPort (priority: 5900, latency offset: 0 usec, available)
Properties:
device.icon_name = "video-display"
device.product.name = "ASUS PB278"
Part of profile(s): output:hdmi-stereo, output:hdmi-stereo+input:analog-stereo
hdmi-output-1: HDMI / DisplayPort 2 (priority: 5800, latency offset: 0 usec, not available)
Properties:
device.icon_name = "video-display"
Part of profile(s): output:hdmi-stereo-extra1, output:hdmi-stereo-extra1+input:analog-stereo, output:hdmi-surround-extra1, output:hdmi-surround-extra1+input:analog-stereo
# dmesg | grep sound - doesn't list anything to do with analog.
[ 3.920668] input: HDA Intel PCH HDMI/DP,pcm=7 as /devices/pci0000:00/0000:00:1b.0/sound/card0/input13
[ 3.921853] input: HDA Intel PCH HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1b.0/sound/card0/input11
[ 3.922829] input: HDA Intel PCH Headphone as /devices/pci0000:00/0000:00:1b.0/sound/card0/input10
[ 3.923004] input: HDA Intel PCH Mic as /devices/pci0000:00/0000:00:1b.0/sound/card0/input

Can't select "Built-in Line Output" in Audio/MIDI prefs

I have audio on my MacPro going out "Built-in Line Output" via the mini-jack at the back to a receiver. Everything works fine.
When I open GarageBand's preferences to set up Audio Output it has defaulted to "Built-in Output" (the little speaker and jack in the front) and is grayed out, I can't select "Built-in Line Output" to send GarageBand's audio out the mini-jack at the back.
Anyone know what's going on here?

HangTime, Thanks for the replies and link.
The problem has solved itself, which is good, but I have no idea why or how, which is mildly off putting.
I went into system prefs and set the Sound output to "Built-in Output," thinking maybe that would "free up" Built-in Line Output for GB, which doesn't make sense, but whatever, none of it made sense. That had no effect in GB, same situation. So, I switched the system prefs back to "Built-in Line Output" and left things for a bit.
Then the next time I went into GB everything was fine. The pull down menus were available and I could select "Built-in Line Output." Weird. [insert head scratch here]

Using built in optical digital audio output for 5.1

So, lets say i want to mix something in 5.1 using logic or soundtrack pro, can i use the optical digital audio output of my macbook to send the signal to a home theather or something to mix it?, or i need a special hardware card for this?
Thanks a lot!!

Hi alece,
Just to clarify something;
When using an optical cable there are several standards of audio that can pass through the cable:
S/PDIF - a stereo signal - http://en.wikipedia.org/wiki/Spdif
AC3 or Dolby Digital - up to 5.1 surround - http://en.wikipedia.org/wiki/Ac3
Dolby Digital Plus - up to 7.1 surround - http://en.wikipedia.org/wiki/DolbyDigitalPlus
ADAT Optical - up to 8 channels of audio - http://en.wikipedia.org/wiki/ADAT_Lightpipe
MADI - up to 64 channels of audio - http://en.wikipedia.org/wiki/MADI
I´m sure other people can add more to the list if they want to, my point is that these signals can pass through the exact same kind of optical cable.
The important bit to know is what does your equipment and software support... in theory your question is quite logical, a software can play 5.1 surround to a optical output like Apple DVD Player does with the built-in sound card of a modern mac. However, Logic does not support live encoding of AC3. That is why you have to output the surround mix in Logic to a sound card with at least 6 channels (5+1 as in 5.1) connected to your speaker system. Typically this would be 5 active studio monitors plus a sub. If you were thinking to use an existing stereo I would not recommend it since most consumer speakers have no limiters to protect them from damage (but may be possible depending on your amplifiers inputs)
I hope this answered your question
Cheers Espen
http://www.midiamore.com.au/

Built-in audio inputs and output don't respond to anything.

Hi there,
Maybe somebody can help me, I have a macbook pro os x 10.8, and i'm having a bit of problem.
I connected a cable to the line input, and before i had a chance to balance the high volume the whole software in the system preference froze, and now the built-in audio inputs and output don't respond to anything, also in the audio MIDI setup menu. The volume button moves extremely slow, and there is no sound at all. Anybody has any idea?
Thanks in advance

Apple store genius bar seems like you best bet.
Ciao.

Can I set the audio INPUT to my pre-amp, and audio OUTPUT to the built in?

I am using Logic Express 7. I want to set the audio input to my Firefox pre-amp, but set the audio output to my computer's built in speakers. I want to essentially record into the pre-amp and listen to the playback through my speakers. I can easily do this in GarageBand, but haven't found a way in Logic.

The remaining problem I'm having is when I record into an "Audio" track via my microphone which is plugged into the Firebox, I'm still only hearing the playback from the Firefox headphone jack, not the computer's built in speakers.
Did you select your new aggregate device in Logic's audio preferences? If so, then the problem is probably with your settings in the control panel which controls the Firebox - I don't use it, so I don't know what it's called, but it controls the routing and monitoring for the Firebox. Check the Firbox manual - there are probably two settings, one for playback and one for direct monitoring when tracking.

No Audio When Set to Built-in Line Output

I have my FCP audio setting (found under Audio/Video settings) set the same as my system settings, "Built-in Line Output" for Audio Playback. I get no sound, to my external speakers, when playing a clip with this setting. If I switch to "Built-in Output" it plays fine through my tower's built-in speaker. I've reset and rebooted and nada, what am I over looking?
Edit in: BTW, all other wares play fine through my external speakers.
Thanks

I think you answered your own question. All audio should be AC3.

Utility to switch between Bluetooth headset and built-in audio input/output

I'm looking for a utility that will switch the Sound preference settings between my Mac's built-in audio input/output device and my Bluetooth headset for use with applications such as Skype.
The way I envision it working is that I would click an icon at the top of the screen and it would toggle the Sound preferences settings from
Output = Line Out (or Digital Out)
Input = Line In (or Digital In)
to
Output = (my Bluetooth headset)
Input = (my Bluetooth headset)
or vice-versa.
That's it. It doesn't need to automatically detect my headset as I might be using the headset on another device. Just a button that would toggle between the built-in and Bluetooth device settings.
Has anyone seen anything like this?

Thanks, it works great.
It would be even better if one could define device groups. e.g. Headset, built-in devices, etc. I'll drop a note to the developer.

No audio output from built in audio

I do a lot of music production/recording on my mac, and to do so I use a firewire audio interface as my audio input and output while recording. When the device is not plugged in my mac usually automatically switches to the built in speakers or headphone jack for audio output. Tonight when I was done recording, I unplugged the interface, opened up iTunes, and went to turn the volume up, but what I got was the little pop op graphic of the speaker, with a little crosse out circle (like a no smoking sign). Now under my system preferences, built in audio is no longer listed as an option for output. After rebooting the machine the problem persists. Any thoughts?

You might try resetting the PRAM:
http://support.apple.com/kb/HT1379?viewlocale=en_US
If this does not work then I would run "Repair Permissions" from Disk Utilities.

No built-in audio output

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