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Macbook Pro overheating because Mac OS Sierra

My Late 2014 MacBook pro 13 inch has been overheating since installing Sierra. At 10 minutes it is warmer than normal, at 20 minutes it is too hot to have on your lap. Opening and running a partition with el capitan does not cause overheating after an hour. Does anyone else have this problem? SMC Fan Control says it is running at 137 degrees fahrenheit.

Not sure from your description if this applies, but if your fan runs continuously (even after allowing time for indexing), check Activity Monitor, and see if "Secd" is using a high percentage of CPU. I haven't found anyone else with this issue, but me, but putting 2 and 2 together found the solution: turn on iCloud keychain. (Apple menu--preferences--icloud---check keychain). I had declined to set this up during Sierra installation, but my MacBook air really really wants me to turn this on. CPU usage instantly went to 3% from 97% and fan spun down. Posting this in hopes this obscure solution will show up in google searches

The problem is related to the older system you updated, not Sierra. One possible problem is whether SMC Fan Control is compatible with Sierra.

 

Use Activity Monitor to Kill Runaway Processes

 

     Use Activity Monitor on your Mac

     Runaway applications can shorten battery runtime, affect performance, and increase heat and fan activity.

I actually was not using SMC Fan control until I noticed it getting hot, and then I only used it to check what the temperature was before posting this.

  1. Does this problem prevail if you boot into Safe Mode?
  2. Does this problem prevail if you boot into Safe Mode, then reboot normally?
  3. Try Resetting your Mac's PRAM and NVRAM and Intel-based Macs: Resetting the System Management Controller (SMC).
  4. Reinstall Sierra:

Reinstall Sierra Without Erasing Drive

 

       Please be sure you back up.

 

  1. Restart the computer. Immediately after the chime hold down the Command and R keys until the Utility Menu appears.
  2. Select Disk Utility and click on the Continue button.
  3. Select the indented (usually, Macintosh HD) volume entry from the the side list.
  4. Click on the First Aid icon in the toolbar. Wait until the Done button activates, then click on it.
  5. Quit Disk Utility and return to the Utility Menu.
  6. Select Reinstall OS X and click on the Continue button.

 

Also, see this User Tip: Basic Steps for Upgrading OS X.

 

Several mdworkers which creating index for Spotlight  running on your MacBook Pro?

Try to Check it with Activity Monitor.

Try resetting the  SMC https://support.apple.com/kb/ht3964

I too have this issue, but when I looked into it further, I found that Photos is running a process in the background to sort my 70Gb database. It is one of the new options in Sierra to optimise the system - not sure what you found after running the activity monitor, but I had this:

photoanalysisd68.925:20.85

As you can see, it has been running for a long time - think I will give it a while longer and see what happens.

 

Note to self - do not rush into opening all the apps until I have checked the system out :-)

get this:

 

https://www.crystalidea.com/macs-fan-control

That's normally not hot, my 15" mid 2012 usually stays around that temp when doing  graphic intensive things. have you tried resetting your pram (perimeter)ram. it's basically the memory stat stores temp settings like volume or screen brightness. after shutting your macbook down, you would hit the power button and then right after that, hold down option + command + R + P util it the screen flashes and then let it go once you hear the mac chime again. 

Not sure from your description if this applies, but if your fan runs continuously (even after allowing time for indexing), check Activity Monitor, and see if "Secd" is using a high percentage of CPU. I haven't found anyone else with this issue, but me, but putting 2 and 2 together found the solution: turn on iCloud keychain. (Apple menu--preferences--icloud---check keychain). I had declined to set this up during Sierra installation, but my MacBook air really really wants me to turn this on. CPU usage instantly went to 3% from 97% and fan spun down. Posting this in hopes this obscure solution will show up in google searches

I have the same behavior in my Mac Air 13'' (2011) all the time fan is working to maximum velocity... and if it appears before install macOS Sierra

Thanks for your answer.

I did the same thing. Running unusually hotter than normal after installing Sierra. The Secd was running at 87%. Switched on keychain in icloud and it's cooling already.

I did the same thing. Running unusually hotter than normal after installing Sierra. The Secd was running at 87%. Switched on keychain in icloud and it's cooling already.

137F is not 'overheating' it is in fact quite low, 75 degrees below the machines limits.

最后更新：2017-09-06 02:29:40

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