"coreaudiod" use all CPU%, overheat and crash iMac at 125%

Mid-2007 iMac (Lion) would slow to a crawl with constant HD spinning and overheating. Activity Monitor shows coreaudiod sitting at 40% CPU then climbes up to over 100%, crashing at 125%.


Quiting/Forcequitting process or killing it from the Terminal would do nothing as it appears seconds later and does the same thing. I've tried all solutions, from permissions, disk repair, fsck in single user, resetting PRAM and NVRAM, SMC, cleaning all caches, preferences, fiddling with the sound settings to see. Safeboot will not load coreaudiod and the system is stable. I have tried clean installs, sitting at each point update for a month before moving on using the combo updater and no permanent fix. I have resisted installing any 3rd party software to see if that triggered it. No the issue comes up on it's own. I have even transplanted com.apple.audio.coreaudiod.plist from both a fresh install of Lion and a previous TM backup. I also get the SBoD when opening Applications/Utilities//Audio MIDI Setup.app


The only quick way to fix this moving com.apple.audio.coreaudiod.plist from System/Library/LaunchDaemons. This effectively stops core audio from using my CPU but I also have no sound input/output.


I have reached my last straw, not wanted to do yet another clean install and the whole restoring from backup yada yada. This was a problem I experienced in 10.6 which was only solved by a clean install. The problem also rared its ugly head in 10.7.1 all the way through 10.7.4. now.


I'm afraid my 25+ years on Macs can figure this one out.

iMac, Mac OS X (10.7.4)

Posted on Jun 3, 2012 4:02 PM

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Jul 27, 2017 1:23 AM in response to Linc Davis

/Library/Audio/Plug-Ins/Components:


/Library/Audio/Plug-Ins/HAL:

AirPlay.driver

AppleAVBAudio.driver

AppleTimeSyncAudioClock.driver

BluetoothAudioPlugIn.driver

iSightAudio.driver


/Library/Audio/Plug-Ins/MAS:


/Library/Audio/Plug-Ins/VST:


Library/Audio/Plug-Ins/Components:


Library/Audio/Plug-Ins/Digidesign:


Library/Audio/Plug-Ins/VST:

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Jun 3, 2012 5:47 PM in response to Strauss Wylde

Launch the Terminal application in any of the following ways:


Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)


In the Finder, select Go Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.


If you’re running Mac OS X 10.7 or later, open LaunchPad. Click Utilities, then Terminal in the page that opens.


Drag or copy — do not type — the following line into the Terminal window, then press return:


ls -1 {,/}Library/Audio/Plug-Ins/* 2> /dev/null


Post any lines of output that appear below what you entered — the text, please, not a screenshot.

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Jun 4, 2012 5:54 AM in response to Strauss Wylde

In the Finder, select Go ▹ Go to Folder... from the menu bar, copy the text on the line below into the box that opens, and press return:


/Library/Preferences/Audio


Delete the files in the folder that opens. You may be prompted for your login password. Then follow the instructions linked below.


Resetting your Mac's PRAM and NVRAM

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Jun 4, 2012 6:54 AM in response to Linc Davis

^^ Thanks for the reply.


This has been done before and has not solved the problem.


As I mentioned, I even wiped drive and clean install many times testing 10.7.0, ..1, ..2, ..3 and now ..4

Using combo updater for each version after a clean install each time and still the core audio problems pops up after a week to a month.


I reset PRAM and NVRAM, clean caches, deleted preferences, using both the GUI and Terimal and restarted more often than I care to count.

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Jun 4, 2012 7:02 AM in response to Strauss Wylde

Make a "Genius" appointment at an Apple Store to have the machine tested.


Back up all data on the internal drive(s) before you hand over your computer to anyone. If privacy is a concern, erase the data partition(s) with the option to write zeros (do this only if you have at least two complete, independent backups, and you know how to restore to bare metal from any of them.) Don’t erase the Lion recovery partition, if present.

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Jun 4, 2012 7:13 AM in response to Linc Davis

Thank you for your interest in helping me solve the problem.


I noticed there are other threads on the issue from as far back as Leopard. I'm outside of the US so I'll just have to throw the iMac in the corner and write it off as hopeless. (I have been in this thing since the Apple IIe btw).


This problem also showed up on the MacBook but I solved it with a quick trip to the Terminal to kill and restart the process and also editing the launchdaemon plist. So it's got to be a software issue as my hardware all around is okay and functioning properly.


The solution I seek is a permanent solution/workaround so I don't need to be in the terminal often.


Thanks much for the assist and have a great day !

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Jul 7, 2012 3:39 PM in response to Strauss Wylde

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.

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Oct 10, 2012 4:01 PM in response to benbrancaerre

I didn't have that software installed on my machine when I had the issue, however, I did have protools installed, and I previously installed and deleted OSCulator. So there may be some weird third party software reactions.


Protools was coming up in some of my search results, so I suspected it for a bit, but the fixes associated with that didn't help me. I had actually given up searching and was just comparing files on the two macs when I noticed the difference and made the swap just to try it out.

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"coreaudiod" use all CPU%, overheat and crash iMac at 125%

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