How do I start coreaudio?

Question

Level 1

19 points

How do I start coreaudio?

I tried the following commands in Terminal, and it tells me that no such process exists:

sudo service com.apple.audio.coreaudiod stop
sudo service com.apple.audio.coreaudiod start

Coreaudio is not showing up in Activity Monitor.

For what it's worth, the Core.Audio.component is where it should be when I drill down to it in the System folders.

Thanks in advance.

iMac 17", Mac OS X (10.6.2)

Posted on Dec 17, 2009 9:45 PM

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Answer 1

K T

Level 7

23,877 points

Dec 17, 2009 10:17 PM in response to huyt78

I tried the following commands in Terminal, and it tells me that no such process exists:

Works for me, sorry.

Seen this thread?
http://discussions.apple.com/message.jspa?messageID=10468708

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Answer 2

V.K.

Level 9

56,174 points

Dec 17, 2009 10:28 PM in response to huyt78

why are you running these deprecated commands? coreaudiod is controlled by launchd and has been since tiger. what exactly are you trying to accomplish?
to see if coraudiod daemon is even loaded run


sudo launchctl list |grep com.apple.audio.coreaudiod

what's the output?

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Answer 3

huyt78 Author

Level 1

19 points

Dec 18, 2009 8:44 AM in response to V.K.

V.K.,

Sorry, I should have provided more information, but I had just spent the second of two frustrating nights trying to restore the empty trash sound and my brain was shutting down.

My situation is similar to the experience of other users in the thread mentioned by KT: http://discussions.apple.com/post!reply.jspa?messageID=10757446

I made a mistake when I said I received a "no process" message in response to my terminal commands. The "no process" message appeared when I tried the "launchctl" command mentioned by "BiknSwans" in the link above.

I've tried many of the proposed solutions that I've come across:

-- Reset PRAM
-- Checked Tinker Tool to see if I muted the sound
-- Moved the core audio plist files to the desktop (and restored them again)
-- Ensured that Audio Output is set to 44100.0 Hz
-- Repaired Disk
-- Repaired Permissions
-- Checked my system Backup on my external drive from a week ago, and the problem is there as well; so, I can't restore from my backup.
-- Checked "Sound" settings in System Preferences to ensure everything is properly configured.

I didn't try the Open/Close Garageband solution as I uninstalled GB a long time ago (long before my problem cropped up).

I know I'm making a mountain out of a molehill here -- it's just a stupid little sound effect! Still, it bugs me that I can't figure it out.

Thanks for your time.

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Answer 4

huyt78 Author

Level 1

19 points

Dec 18, 2009 8:47 AM in response to V.K.

Addendum -- I'm not in front of my Mac at the moment, so I can't check to see if coraudiod daemon is loaded.

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Answer 5

V.K.

Level 9

56,174 points

Dec 18, 2009 9:27 AM in response to huyt78

huyt78 wrote:
V.K.,

Sorry, I should have provided more information, but I had just spent the second of two frustrating nights trying to restore the empty trash sound and my brain was shutting down.

My situation is similar to the experience of other users in the thread mentioned by KT: http://discussions.apple.com/post!reply.jspa?messageID=10757446

threads like that one contain all kinds of people with all kinds of issues most of the time having nothing in common.

I made a mistake when I said I received a "no process" message in response to my terminal commands. The "no process" message appeared when I tried the "launchctl" command mentioned by "BiknSwans" in the link above.

I've tried many of the proposed solutions that I've come across:

-- Reset PRAM
-- Checked Tinker Tool to see if I muted the sound
-- Moved the core audio plist files to the desktop (and restored them again)
-- Ensured that Audio Output is set to 44100.0 Hz
-- Repaired Disk
-- Repaired Permissions
-- Checked my system Backup on my external drive from a week ago, and the problem is there as well; so, I can't restore from my backup.
-- Checked "Sound" settings in System Preferences to ensure everything is properly configured.

I didn't try the Open/Close Garageband solution as I uninstalled GB a long time ago (long before my problem cropped up).

I know I'm making a mountain out of a molehill here -- it's just a stupid little sound effect! Still, it bugs me that I can't figure it out.

Thanks for your time.

first, you should NEVER delete anything from /sytem/library/launchagents or /sytem/library/launchdaemons. if you want to disable a launch daemon for troubleshooting purposes it should be done carefully. you were using an obsolete command for it. the correct one is


sudo launchctl unload /system/library/launchdaemons/com.apple.audio.coreaudiod.plist

to unload coreaudiod and


sudo launchctl load /system/library/launchdaemons/com.apple.audio.coreaudiod.plist

to load it. if you want the command to survive restarts then use


sudo launchctl unload -w /system/library/launchdaemons/com.apple.audio.coreaudiod.plist

to unload it and


sudo launchctl load -w /system/library/launchdaemons/com.apple.audio.coreaudiod.plist

to load it. also, run the following terminal command to see if the empty trash sound is even present


open /System/Library/Components/CoreAudio.component/Contents/Resources/SystemSounds/finder/empty trash.aif

if this one does play make a new user account and log into it. does empty trash sound work there?

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Answer 6

huyt78 Author

Level 1

19 points

Dec 18, 2009 9:44 AM in response to V.K.

I'll try what you advised when I get back to my Mac. One thing I do know -- that trash .aif file is there (checked that out last night). When I double-click the file, it opens in iTunes and plays the sound.

Many thanks.

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Answer 7

huyt78 Author

Level 1

19 points

Dec 18, 2009 6:59 PM in response to V.K.

I ran the command "sudo launchctl list |grep com.apple.audio.coreaudiod", and it returned nothing.

I saw that com.apple.audio.coreaudiod.plist was missing from the launchdaemons directory, so I added it in from the Install disk using Pacifist.

I tried the commands you mentioned:
sudo launchctl unload -w /system/library/launchdaemons/com.apple.audio.coreaudiod.plist
sudo launchctl load -w /system/library/launchdaemons/com.apple.audio.coreaudiod.plist

...but the system tells me "no such file or directory". I know it's there, as I just added it.

I can't say I'm an expert with Unix commands.

a "pwd" indicates "/MyUserName$". Do I have to get out of the user directory in Terminal and switch to Macintosh HD? If so, I'm not sure how to do that. I tried "cd ..", but I'm still in "/MyUserName$".

Thanks.

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Answer 8

huyt78 Author

Level 1

19 points

Dec 18, 2009 7:04 PM in response to huyt78

The trash sound is back! I just restarted and reset the PRAM. That did the trick. Many thanks for your help.

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Answer 9

V.K.

Level 9

56,174 points

Dec 18, 2009 7:06 PM in response to huyt78

huyt78 wrote:
I ran the command "sudo launchctl list |grep com.apple.audio.coreaudiod", and it returned nothing.

I saw that com.apple.audio.coreaudiod.plist was missing from the launchdaemons directory, so I added it in from the Install disk using Pacifist.

I tried the commands you mentioned:
sudo launchctl unload -w /system/library/launchdaemons/com.apple.audio.coreaudiod.plist
sudo launchctl load -w /system/library/launchdaemons/com.apple.audio.coreaudiod.plist

...but the system tells me "no such file or directory". I know it's there, as I just added it.

I can't say I'm an expert with Unix commands.

a "pwd" indicates "/MyUserName$". Do I have to get out of the user directory in Terminal and switch to Macintosh HD?

no, that's quite unnecessary. let's see if you did indeed put that file back there. run


ls -ladeO /system/library/launchdaemons/com.apple.audio.coreaudiod.plist

what's the output?

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Answer 10

huyt78 Author

Level 1

19 points

Dec 21, 2009 7:30 AM in response to V.K.

"no such file or directory", since I stuck the file in /library/laundaemons. I moved it now to /system/library/launchdaemons/com.apple.audio.coreaudiod.plist. Output now as follows:

-rw-r--r-- 1 MyUserName admin - 653 May 18 2009 /system/library/launchdaemons/com.apple.audio.coreaudiod.plist

Thanks.

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Answer 11

V.K.

Level 9

56,174 points

Dec 21, 2009 7:33 AM in response to huyt78

the permissions on this file are wrong. run repair permissions and restart the computer.

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