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CoreAudiod 90% cpu and hightemps

Recently my fan has been coming on a lot, even when idle so I decided to have a little investigation as I am also currently suffering slowdowns as well.


Running a 17" MBP dual core (2.33ghz) (2006 MBP4 i think). Upgraded from SL to Lion 2 weeks ago.


in my Activity monitor Coreaudiod is running anywhere between 81% CPu to 120% CPU usage, 6 or 7 threads.( yes i know activity monitor max CPU for my machien is 200% as it is dual core)


Now I this is obscenly high as I am currently not running anything else and no sound is being used. This is with just activity monitor & Firefox open.

using Temp monitor it shows the following:


CPU core 1; 92-99'C

CPU core 2 : 89-90'c'C

CPU a temperature diode 94'c

CPU A proximity: 72'c


every other temp is well within normal ranges and under 60'c.


My fan now comes on within a minute of booting the MBP, I have tried resetting PRAM, SMC, have tried the common fixes of stopping CoreAudioD in activity monitor only for it to restart instantly with the same high CPU load. I have tried terminal to rename the plist for coreaudio both in my users section and the launchdeamons ( which stopped my audio completly). although when I disabled it via the launchdeamon section my cpu temp returned to normal ( was down at 54'c even when using youtube- albeit without sound) I am at a loss. Have spent days on the net searching for solutions but they all point to an error when Coreaudiod freezes.


The machine is getting so hot I am worried it is going to do some damage.


Any ideas or help would be greatly appreciated.


Gordon.

MacBook Pro, Mac OS X (10.7)

Posted on Aug 6, 2011 3:19 PM

Reply
35 replies

Apr 17, 2012 8:39 PM in response to sasansamit

Hello,

I'm new to macs and have this as my first big issue. I found this post and it sounds like what I need. MBP barely a month old and have no idea how to "update the config" as sasansamit suggested. Could anyone offer guidance on how to do this? For me the issue started when playing a flash video in Safari.


Any help is appreciated! Thanks!

Apr 24, 2012 9:20 AM in response to sasansamit

Thanks mondomori for your clues. Like I said, I don't know what I am doing so I used these clues to find out how to restore the audio preferences. I must have nuked the preferences file trying to fix something else (my mistake). I used this trick and recreated the single missing Audio preferences folder with permissions. Once I did that, a plist file was immediately created by the coreaudio process. After restarting to clear the PRAM and NVRAM, another plist file appeared in the folder and now my audio seems to work fine!


Thanks for all your help!!

Jul 7, 2012 3:40 PM in response to gordonfrommacduff

I was having the same problem and finally fixed it after 4 hours and a good 30 different attempts at fixes from around the web.


I grabbed the Library/Preferences/Audio folder from another Mac I own, dropboxed it to myself, and dropped it into my the Preferences folder of the affected Mac after I noticed that folder was missing.


Reboot and boom, solved my problem.


Killing the process didn't help me, nor did PRAM, etc.

Oct 10, 2012 2:19 PM in response to gordonfrommacduff

I found that the following (from another post) fixed the issue of the overheating CPU for me. Hopefully this will help others.


Deleted the Audio folder located at [OSX HDD Name]/Library/Preferences/ and create a new one as root in the terminal:
"sudo mkdir /Library/Preferences/Audio"


then set permissions:
"sudo chown -R _coreaudiod:admin /Library/Preferences/Audio"

Jan 15, 2013 5:49 PM in response to gordonfrommacduff

Re: "coreaudiod" issues in Mountain Lion 10.8.2. I'm not sure exactly which post to reply too, but I'm having a similar problem "without the heat issue." My problem is my sound icon just grayed out half way though loading at start-up. Obviously, I had "no sound" after same. I'm been working on this off and on for a couple of months. The problem seems to be "bad drivers or at least incompatiable drivers" with the Upgrade to Mountian Lion.


The only fix I have found so far, as Tech Support seemed as though they had never heard of this problem ....Huuummmm (after reading this and other post), was to open Activity Monitor and "Quit" the very first "coreauditd" driver listed. It seems like there are many on my machine, because when I "quit one" another one pops up in it's place. Different size, etc. Thus, the 2nd driver always works. Hence, my strong suspicion that "some" of my sound drivers are either corrupted or incompatible. Hope this helps someone, as I was ready to throw my new machine in the Ocean. I have spent countless hours on this .... NOT HAPPY !! I have reinstalled Mountain Lion at least 4 times, and reset everything I could reset many, many times. One would think Apple would bring their Techs up to speed on this issue, as "what good is Tech Support ... when the Techs giving the support .. are clueless on the issue"??

Jan 15, 2013 6:03 PM in response to cruisinkev1

Contining ... on the "MBP coreaudiod sound issue." The reason I said "upgrade to Mountain Lion" was because this new machine 15" (which came with ML) was a replacement for a 17" MBP that was only a year or two old, but it had a Bad Video Card, and I got the Black Screen of Death all the time. Thus, I have gone from "one problem machine to another" ... Again, NOT HAPPY !!


I think the bad/corrupt or incompatible drivers were introduced to the New machine when Tech Support in the Store cloned over my hard drive so I wouldn't lose all my data, at my request. I had no idea that I was setting myself up for a "bad drivers/incompatible" driver issue. Sooo again, I just hope this helps someone. Now I need to figure out how to get rid of bad/corrupted or incompatible drivers, and the world should "in theory" ... be a better place.

Mar 17, 2013 4:47 PM in response to Rod McQueen

Well, for myself ... I haven't had "the heat issue's," but trying to figure out why I had "no sound" 8 out of 10 times when I booted up my computer was nothing short of "maddening." I asked multiple people/techs etc... and no one could resolve the issue. So again, I have a "band-aid resolution" ... for now .. and that is to simply start "Activity Monitor" and then "quit" the 1st "coreaudiod" file that loads. When the 2nd one automatically loads ... I then have sound. I wish I knew how to " permantently delete" the first bad driver, as that should resolve my problem permanately. I had spent more time trying to resolve the problem and/or find a solution, than the computer is even worth .. if one calulates my wages, against the time I had to spend. Again, NOT HAPPY !!

Apr 10, 2013 12:51 PM in response to sasansamit

I had the same coreaudiod problem on Mountain Lion 10.8.3, sasansamit's solution worked in seconds!

In simpler terms:


1. go to /Library/Preferences (make sure it is not /Users/yourname/Library/Preferences, it must be the root directory).

2. Then create a new folder in the Preferences folder and name it Audio.

3. If you have Time Machine setup, simply enter Time Machine while still in that directory, go back a few weeks and there should be 4 files in the Audio folder.

4. Select all of them and press restore. Within seconds everything will be fine


If you don't have Time Machine copy the Audio folder in /Library/Preferences from another Mac to yours.

May 7, 2013 12:31 PM in response to gordonfrommacduff

How to solve the coreaudiod eating up CPU and slowing down your Mac problem.


I wrestled with this for a few hours and wanted to post what I think is the problem and the solution - a few of the replies previously have been 'try this and try that and hope something works'.


After watching my coreaudiod eat up over 100% of CPU for a few hours I tried killing it. That didnt work - it just sprung back. I tried zapping the PRAM and restarting. Coreaudiod would kick in and grind the machine to a halt.


If you are experiencing this, here is what to do:


1. Unload coreaudiod to get your machine back to speed


Enter the following into terminal:

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


This should free up some CPU for you to complete the fix.

2. Navigate to HD/Library/Preferences and delete the folder named Audio. If you don't have one skip to #3


This is the cause of the issue. This folder contains the preferences for coreaudiod and when the folders permissions go wonky it doesnt know what to do so keeps trying to write prefs to the folder over and over and over and over..

3. Create a new Audio folder in /Library/Preferences


Enter the folliwing into terminal:

sudo mkdir /Library/Preferences/Audio

(or alternately just create a folder in the preferences directory using the finder)


You are making a new blank folder that you are going to set permissions on. Then coreaudiod can record its own prefs and stop freaking out.


4. Set permissions for read/write for admin for this folder


Enter the folliwing into terminal:

sudo chown -R _coreaudiod:admin /Library/Preferences/Audio

(or alternately get info in finder on your new Audio folder, unlock it using the little lock icon, and set permissions to read/write for admin)


5. reload coreaudiod


Enter the folliwing into terminal:

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


That should solve your problems.


Thanks to https://discussions.apple.com/thread/4160772?start=0&tstart=0 for the pieces that finally worked for me.

CoreAudiod 90% cpu and hightemps

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