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Re: El Capitan macbook air 2012 fan problem
Max108 Jul 12, 2015 10:03 AM (in response to Lars41009)Open the Activity Monitor app and select the CPU tab and order by %cpu to see which processes are stuck and consuming so much energy.
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Re: El Capitan macbook air 2012 fan problem
Lars41009 Jul 13, 2015 1:11 PM (in response to Max108)hi Max, unfortunately, i've monitored the CPU and it is not running above 30% max...
basically; i switch the machine on; fan goes max rpm instantly..
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Re: El Capitan macbook air 2012 fan problem
Max108 Jul 13, 2015 1:46 PM (in response to Lars41009)That both you and iroze007 have the same Model MacBook and the same issue (that would normally be an SMC fault but isn't), can't be a coincidence. There's plenty of free apps out there that report sensor data for you, so that you can confirm that it's not hot cpu/gpu cores causing it.
I'd recommend you try resetting the NVRAM too; it's less likely to be the culprit than SMC, but still worth ruling out:
- Turn on your Mac.
- Press and hold the Command-Option-P-R keys immediately after you hear the startup sound.
- Hold these keys until the computer restarts and you hear the startup sound for a second time.
- Release the keys.
In the likely event that this doesn't help, it would be well worth submitting a bug report.
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Re: El Capitan macbook air 2012 fan problem
Lars41009 Jul 14, 2015 11:23 AM (in response to Max108)hi Max, thanks again. Unfortunately no luck. submitted a bug report
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Re: El Capitan macbook air 2012 fan problem
iroze007 Jul 12, 2015 11:30 PM (in response to Lars41009)I'm experiencing the exact same problem on my Mid 2012 MacBook Air. A solution would be much appreciated.
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Re: El Capitan macbook air 2012 fan problem
Lars41009 Jul 14, 2015 11:38 AM (in response to iroze007)hi Iroze, interested to know if above steps did help you
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Re: El Capitan macbook air 2012 fan problem
Jimmy Hough Jr Jul 13, 2015 12:01 AM (in response to Lars41009)I can only speculate that the cause is that it is beta code, and is taxing the components enough to warrent the extra cooling.
I wouldn't recommend artificially reducing the fan speed until the cause is known. Beta software often has a lot of debug functionality that isnt present in release code.
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Re: El Capitan macbook air 2012 fan problem
jtayler Jul 14, 2015 11:58 AM (in response to Lars41009)this can happen to mac hardware when the firmware settings get hosed -- this is NOT likely elCapitan itself, but you will almost certainly be able to resolve this issue by google'ing firware fixes and basically doing something like holding down a pair of keys while restarting and waiting for a long, weird beep. After that reset, I'm quite sure your fans will return to normal.
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Re: El Capitan macbook air 2012 fan problem
kmerenda Jul 14, 2015 5:34 PM (in response to Lars41009)I'm experiencing a similar problem. While the fans to come on full blast right away, to do work them selves up to full speed, even when no apps are running. I'm on a Mid 2013 13" MBA.
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Re: El Capitan macbook air 2012 fan problem
gdnbmtggg Jul 18, 2015 6:58 PM (in response to Lars41009)I'm experiencing the exact same issue. MacBook air, early 2014 model. Hope to see a fix soon.
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Re: El Capitan macbook air 2012 fan problem
mdadgar Jul 20, 2015 5:25 PM (in response to gdnbmtggg)I am seeing this, too. Mid-2012 MBA 13".
There's a kernel_task that is using a consistent 20-30% of a CPU that seems to be correlated to the fan running.
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Re: El Capitan macbook air 2012 fan problem
pjscribble Aug 18, 2015 12:29 AM (in response to Lars41009)I was seeing this too. Macbook Air (mid 2012). Fan going crazy after I installed El Capitan. I went into Activity Monitor and saw that the process secd seemed to be using a lot of CPU. I shut it down and it immediately restarted using a fraction of the CPU and my fans instantly quietened and are now running normally. I really am clueless and had no idea what I was doing, it could have been a complete coincidence but I'm adding this in case it helps someone else :-)
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Re: El Capitan macbook air 2012 fan problem
mastermass Aug 24, 2015 3:28 AM (in response to pjscribble)Same here!
My MacMini 6,1, early 2013, i7 config is also on fire. The fan spins like crazy; but no reason! CPU usage low, no read/write on the disk, nothing in RAM.
Even if all Applications are closed (and QUIT) it still runs. BUT... That comes up about 2 weeks ago, not since July, like it´s on all the MBAs here listed.
Will try the NVRAM/PRAM reset and get back to you later; but I m pretty sure, that wont help.
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Re: El Capitan macbook air 2012 fan problem
mattpoplin Sep 10, 2015 5:12 PM (in response to Lars41009)Having same problem here with Early 2013 15" MBPr. Fan wont turn off and CPU activity is 8-12%. I have done everything above and did a clean re-install with same results.
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Re: El Capitan macbook air 2012 fan problem
mattpoplin Sep 10, 2015 8:10 PM (in response to mattpoplin)Update - MBPr in sleep mode for 3 hours and I came back to a blazing hot keyboard / body. I'm hoping this is a quick fix for Apple since I dont want my logic board ot burn up.
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