I cannot change sound output to line out

I have a first gen 8-core Mac Pro 3GHZ. Since upgrading to Snow Leopard, the machine wont let me change the sound output so that the sound comes out my external speakers. Have tried binning all sound prefs files, re-booting, PRAM and rebuild permissions. I know the speakers work and have tried using sound preferences panel, and Audo/Midi panel
Help!
Thanks in advance

Same here. Every time I reboot the sound defaults back to internal speakers. But it gets worse from there.
If it goes to the screen saver and log back in the sound is still set to line out but the output volume no longer works. By that I mean I can press the up and down volume on the keyboard and the volume control picture appears on the screen. However, the output volume under preferences>sound>output does nothing and the sound remains at the same volume. If I take the keyboard down to mute it will mute the system and cause the check box to activate. In order to fix the problem I have to click on internal speakers and back again to line out. At that point my volume controls work again.
Yippie Snow Leopard. Between that and taking away Quicktime's ability to make movies with picture files I wish I had waited on the upgrade.

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Guys ... I have a 2008 MacPro running the current Yosemite. I also have installed the sound amp called "BOOM!" I have the Sound set to Line Out which should have the computer boot up to BOOM! Instead, it boots up to the Internal speaker. What's up?

Hi Folks ...
I have a 2008 MacPro running the current Yosemite. I have installed the recommended upgraded video card, but the sound is as it was new. I also have installed the sound amp/graphic equalizer called "BOOM!" I have the Sound set to Line Out which should have the computer boot up automatically to BOOM! and thus to the external speakers. Instead, it boots up to the Internal speaker. According to the folks at "BOOM!", this is happening to others who have similar Macs. They can't find any explanation within BOOM!, so I am turning to you all. Any ideas?

Hi Kappy ...
Sorry, I guess I didn't state the problem very well.
I don't want the computer to boot up to the internal speaker. I want it to boot up to the external speakers. However, even though System Preferences is set on Line Out, when the computer boots up or reboots, it erroneously goes to internal speaker. So, every time I boot up, I have been going to System Preference/Sound and clicking on Line Out. From that point on, everything is OK until the next boot up. It is a small annoyance, but annoying all the less. The simple explanation seems to be that when the computer is shut down, it does not hold the setting for Line Out and resets itself to Internal Speaker. How do I change that behavior and get it to go to Line Out whenever it boots up?

Combined optical digital audio output/analog line out

Combined optical digital audio output/analog line out minijack on the new Mac Pro support 5.1?

Are you asking if it has that?
http://www.apple.com/mac-pro/specs/
says:
Combined optical digital audio output/analog line out minijack
Which means it does.
On all but the earlier Mac Pro models, this has been standard since the iMac G5.
Mac Pros earlier used SPDIF.
These are now mini-Toslink.

Alsa: reroute sound output to line in?

Hello,
i've been on this for a week now, not getting anywhere.
but now i'm determined to crack the nut that is alsa.
a familiar problem: i want to use alsa's sound output - pcm or master - internally.
i have set up a loopback device now; it works with e.g. recordmydesktop, but the application i'm interested in seems to only chose the first capture channel of the default soundcard :-(
(it's sndpeek).
so, is it possible to duplicate & reroute the default card's pcm or master channel back into the default card's Line channel (Line in)?
of course i'm open to other suggestions.
thanks.
current .asoundrc (creates a 2nd sound card that i cannot access with sndpeek, but works otherwise)
pcm.!default { type asym
playback.pcm "LoopAndReal"
#capture.pcm "looprec"
capture.pcm "hw:0,0"
pcm.looprec { type hw
card "Loopback"
device 1
subdevice 0
pcm.LoopAndReal { type plug
slave.pcm mdev
route_policy "duplicate"
pcm.mdev { type multi
slaves.a.pcm pcm.MixReale
slaves.a.channels 2
slaves.b.pcm pcm.MixLoopback
slaves.b.channels 2
bindings.0.slave a
bindings.0.channel 0
bindings.1.slave a
bindings.1.channel 1
bindings.2.slave b
bindings.2.channel 0
bindings.3.slave b
bindings.3.channel 1
pcm.MixReale { type dmix
ipc_key 1024
slave { pcm "hw:0,0"
rate 48000
#rate 44100
periods 128
period_time 0
period_size 1024 # must be power of 2
buffer_size 8192
pcm.MixLoopback { type dmix
ipc_key 1025
slave { pcm "hw:Loopback,0,0"
rate 48000
#rate 44100
periods 128
period_time 0
period_size 1024 # must be power of 2
buffer_size 8192
- copied over from here.
the soundcard is a basic laptop intel chip.
$ dmesg|grep -i intel
[ 1.037761] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device
[ 19.315080] snd_hda_intel 0000:00:1b.0: irq 44 for MSI/MSI-X
[ 20.408741] input: HDA Intel Headphone as /devices/pci0000:00/0000:00:1b.0/sound/card0/input10
[ 20.408940] input: HDA Intel Line as /devices/pci0000:00/0000:00:1b.0/sound/card0/input11
[ 20.409100] input: HDA Intel Mic as /devices/pci0000:00/0000:00:1b.0/sound/card0/input12
thanks for any advice!
Last edited by ondoho (2013-11-07 19:37:46)

so, is it possible to duplicate & reroute the default card's pcm or master channel back into the default card's Line channel (Line in)?
If you're talking about the analog audio path the answer is maybe. But fair warning, you'll be spending many more hours (maybe) getting it to work while wallowing real deep in today's integrated audio hardware and ALSA if you want to use this method.
the soundcard is a basic laptop intel chip.
This is the first thing you need to learn. That chip is generic and found on almost all modern x86 motherboards. Where the audio magic actually happens is the "codec" chip and the vendor/model varies. The HDA Intel chip merely "talks" to the codec chip which sits "behind" the HDA Intel chip on the bus.
So the first step is to figure out which codec chip is installed and then determine if you can "manually" connect the "virtual wires" inside the codec to make a connection from the output (play) to the input (capture).
One way that you might find which codec you have is to enter:
less /proc/asound/cardX/codec#Y
where "X" is your card number and "Y" is the codec number
Just look for "Codec:" near the top. Also, there's gobs of other good info in that file that will be used in a moment.
The codec chip contains what I call "virtual wires" that connect it's internal components (amplifiers, mixers, ADCs, DACs, etc). ALSA gathers info from BIOS and determines which connections to enable, but I've found that most codec chips have many connections that are not enabled. More importantly in this case, I've also found that many chips have a connection from the output (play) to the input (capture), it's just not enabled... and that may (or may not) also be the case for your chip. I've been able to enable the internal connections in my chips to create a hardware loopback so that Line Out is connected to Line In... so what you hear in the speakers is also sent to ALSA's capture interface... and the capture level is independently adjustable.
So how would you inspect and change these "virtual wires"? With a program called hda-analyzer. It will use the data in the /proc/asound directory (and more) to show you how your codec is wired in both text and graphics form, along with allowing you to change it. One way to get it is by running this command:
wget -O run.py http://www.alsa-project.org/hda-analyzer.py
I'll leave it to you to figure out which dependency packages need to be installed, but once you install them, run:
python2 run.py
where it will download yet more code (possibly in the /dev/shm directory) and will barf because you either need to install yet more dependency packages to run hda_analyzer.py, or simply because it tried to automatically run it using python3 (because it's also a python2 program, so run it manually like: "python2 hda_analyzer.py").
Once you get it running, the confusion factor will probably kick into high gear. Take your time and poke around. Get your bearings somewhat by clicking on "Graph" to display the wiring layout and hover your mouse over the square blocks and the wires. As I said in a previous post, if you can download the datasheet for your codec chip, it may help if it includes an internal diagram:
https://bbs.archlinux.org/viewtopic.php?id=147208
https://bbs.archlinux.org/viewtopic.php … 3#p1089243
Any changes you make to the "wiring" are instantaneous (so you can try it while making changes) and will go away on a reboot. Clicking "Exp" will create a python script of your changes that you can run later to make those connections again from the command line.
Good luck, and I'll check back to help if I can find the time... that is if you're up for such a major challenge.
Last edited by pigiron (2013-11-10 04:31:25)

How to change sound output?

Howdy
I recently bought a high-end toslink cable which I connected from the optical/digital out from my iMac to my receiver. The sound quality is excellent, however I noticed that all sounds now gets passed to my Hifi system all the time. The only way (I could find) to route sound to the internal speakers is by physically unplug the cable. This is really not workable in the long run as it wears down the plug and, not to mention, my patience...
So, anyone know any way to switch output to internal speakers w/o having to unplug the cable? Or is there another approach (I'm thinking Airport Express)?
/Cheers

Unfortunately, you cannot select +Internal speakers+ in System Preferences Sound pane Output tab, if you have something plugged into the audio output port.
If you got an AirPort Express, its AirTunes feature would certainly work for iTunes output. However, I believe AirTunes would only play the output of iTunes. So it would work great as long as you were only playing songs and videos using iTunes, because all other sounds will come from your computer speakers. No need to change any setting manually, after you are done listening over the stereo system. However, it would not work so great, if you wanted the audio output of some other programs to be played from the stereo system; but there seems to be a third-party solution for that issue
http://www.rogueamoeba.com/airfoil/mac/
If you have separate powered computer speakers that connect using a standard mini-jack, one alternative is to get a USB (or possibly FireWire) sound output device (if you want to be able to change the sound output setting manually). The least expensive one may be the Griffin iMic.
http://www.griffintechnology.com/products/imic/
It provides a second sound output port over USB, so it should show up as a separate choice in System Preferences Sound pane Output tab. Therefore, you should be able to use the Sound preference pane to manually switch the sound output from you stereo system to the computer speakers connected over the USB iMic.

X-Fi Titanium only Mono output through Line-Out

Hi,
I have a problem with my x-fi titanium card. Since yesterday the output of the line-out is only mono. So the sound is always the same for right an left channel. I tried this in the mixer menue where you can test each channel if there is sound.
I already re-installed the newest drivers and changed PCI-E slot on my motherboard. The strange thing is in audio creation mode of the mixer I can see different amplitude for left and right channel of the output while testing.
After testing this whole thing I assume the amplifier of the card is broken and giving out the same signal to both channels.
Anymore suggestions?
regards,
Mik

are you using a mono cable with the card? Your card could very well be outputting stereo, and if you use a mono cable, you will end up with 1 channel sound.
Have you checked your mixer to make sure that you do not have the balance slider set to the left or right?

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.

Cannot change the output medium for contract

Hi Everyone,
In the contract we have "Output" tab to change the output medium for the contract.
So the issue is when I click on the change button and try to change e-mail address,I am not able to do that.
The e-mail address is grayed out though I am in the change mode.
This is happening for some contracts only.
How should I change the e-mail address of the contract?
Thanks & Regards,
Khushbu.
Edited by: Khushbu Brahmbhatt on Feb 25, 2011 9:01 PM

Hi,
Have a look at the foll thread for more pointers;
Re: Change medium of output for Changed PO in SRM
BR,
Disha.
Do reward points for useful answers.

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.

No output from line out 1 and 3, audig

A while ago, I observed no sound coming from several speakers in our 5. sound system. 2 of the speakers provide sound. Also running windows xp and audigy 4.
I followed the trouble shooting guide using headphones and have no sound card ouput from lines and 3. Line 2 provides output.
We are using a 5. speaker system and individually plugged each of the 3 lines from the speaker system into line 2 out from the sound card and all the speakers sound good.
uninstalled and reinstalled the drivers 5.2.6.6?
The troubleshooting guide mentions a "digital only output" toggle under the volume advanced tab. I searched the sound and audio device properties utility from top to bottom but can't find the toggle.
I am not sure what to do regarding further troubleshooting. Please advise.
Regards,
Jer?

Never mind: focus was on the wrong computer on the KVM.

Sound output permanently digital out???

Hello there, folks
Yesterday I was at a shoot and brought my laptop just to check email periodically. That is truly all I did. And yet, at a certain point I went to play something out loud and when clicking the volume button it seems I can't control the sound, and I don't hear anything.
When I go into preferences it reads:
Digital Output - built in output
When I plug in headphones that changes to:
Headphones - built in output
and I can hear again.
Still, I have never used digital output. Why is that the new default? Where did my other option go? How can I fix this?
Thanks in advance for any enlightenment!
- Fredo

Plug your headphones in and out a couple of times. Check the jack for things like lint. There is a switch in the jack that detects the insertion of an optical cable which disables the built-in speakers. The switch is in the position that says an optical cable is plugged in even though it isn't. There is probably red light coming out of the jack.

Changing SOUND Output

In the System Preferences and as well as using the Sound icon on the top right of the screen, you can select the Output and Input devices. (pressing Option key while selecting the sound icon, or going straight into the Sound Preferences).
How can I switch between headphones plugged in and the internal speakers without having to unplug the headphones each time.
If the headphones are plugged in, under Output it only shows "Headphones." If it is not plugged in, then it only shows "Internal Speakers." But never both. I was told that I can switch between them. How do I do this? Thanks
Jonathan

I cannot help you, Jonathan; but I have the same problem. I just bought a nifty little stereo sound system with an audio input I'd like to use with my iMac. I'd really like to leave the computer speakers on too, because of the shape of the room. I suspect, though, that the reason nobody has replied to your original question is because there just is no way to run internal speakers at the same time as external ones.
The jack itself mechanically disconnects the internal speakers, I suspect--if it works like the plain, vanilla 3.5 mm phone jacks that electronics stores carry. If that's the case, then short of opening the case and replacing the jack, there's nothing that can be done.
Fixing this problem would involve a dedicated jack that does not disconnect the internal speakers as well as one that does (for, say, headphone use), and I really hope that Apple might consider adding such a jack in future models.
I'd like to be wrong with my reply, since it would be very nice to have a workaround that does enable inner speakers to work with external ones.

Cannot change sound for incoming message?

I can change the default sound for outgoing messages, and can set the sound for incoming messages, but iMessage seems to ignore what I set for incoming messages and always plays the default. Can anyone confirm?
Dave

I can change the default sound for outgoing messages, and can set the sound for incoming messages, but iMessage seems to ignore what I set for incoming messages and always plays the default. Can anyone confirm?
Dave

Sound problem - microphone line out

Hi.
I have one big problem. When I put the microphone into the right slot, so i hear everything what I say. There is no problem. I can hear my voice in repros or headphones. But there is another problem. When I connect to programs like TeamSpeak2 or Ventrilo, so my friends on internet dont hear my voice but they hear the radio signal. I dont hear this radio, i hear my voice, but they hear any radio channel. What can i do? Is there problem on frequency or what? Ventrilo and TeamSpeak2 are normal programs. In TeamSpeak u can hear the radio signal in test mode.
Thx for answer.
I have MSI Mega-651
AC 97 Audio
SiS
Sry for my english

If you have not already found a solution to this, other than the Griffen iMic, you might want to take a look at these little gadgets. They are USB headset micrphone adapters.
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=6868129849&ssPageName=MERCVIC_ReBay_Pr4_PcY_BIN_StoresIT
I am surre they are available elsewhere, but I got mine on ebay and it seems to work OK. the nice thing is that it is not bulky like the iMic. Although it says Windoze, you can plug it in and it is recognized by OS X as a "C-Media USB Headphone Set) for both input and output. I have a Planetronics on my desktop but wanted something smaller for travel. This little gadget should help.
AlBook, G5-Dual Cor with 23 display Mac OS X (10.4.6)

Simultaneous digital & analogue sound output

Until recently I used to have a Powermac G5. I was able to have simultaneous sound output to the line out and digital sockets, but I find in my new Mac Pro (early 2008) this does not seem possible - you have to choose between internal speaker, line out or digital.
Although not a big deal, this is really irritating, as I have my main output as digital, where I play my music from iTunes on my HiFi via a 20m Toslink cable to a high End DAC connected to my amplifier, but when I want to use iChat etc, I just use my JBL Creature speakers. With the G5 I would just switch on the HiFi only when listening to music, but now I have to remember to go to the sound preferences to change the output from line out to digital when listening to music and vice versa when I want to do an iChat.
I'm just struggling to understand why this basic functionality was removed in the Mac Pro.

With an MIO card, this is not something that you will be able to do with a 10 KHz output rate. The way to accomplish this is to generate your analog output using your MIO card, and the digital signal with a PCI-6533 connected to the MIO card via the RTSI bus. The RTSI bus allows the cards to trigger together, and generate synchronous digital and analog output

I cannot change sound output to line out

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