Sierra GM on MBP 2.8 GHz – fans running constantly

Discussion in 'macOS Sierra (10.12)' started by thomaskyhn, Sep 9, 2016.

  1. thomaskyhn macrumors member

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    Sep 30, 2010
    #1
    After installing the Sierra GM on my MacBook Pro (2.8 GHz intel Core i7, 16 GB RAM), the fans are running almost constantly, and the computer itself seems to be warmer than before. Anyone else seeing this? Any suggestions what could be wrong? I've checked Activity Monitor, but couldn't see any particularly cpu consuming processes.
     
  2. emporiky macrumors regular

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    Mar 27, 2014
    #2
    That should be from your MacBook processing your photo library. It is the same with me (similar 15'' MacBook) and my cpu got really hot - i think the gpu got a high as 100 degrees.
    Try unplugging your machine, since it automatically stops the processing if you are not charging it.
     
  3. thomaskyhn thread starter macrumors member

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    #3
    I see – in that case, it should at least be done at some point.
     
  4. h9826790 macrumors 604

    h9826790

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    #4
    I guess the photo library processing as well. My Wife's profiles have more than 60k photos, and it takes almost 12hr now to process 1/3 of them. The process will keep taxing the CPU which generate lots of heat.
    Screen Shot 2016-09-10 at 16.09.07.jpg Screen Shot 2016-09-10 at 4.07.51 PM.jpg
     
  5. thomaskyhn thread starter macrumors member

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    #5
    It appears that the processing of the photo library is done. But something called "racoon" is at the top of the CPU column in Activity Monitor. Any idea what it's doing?
     
  6. h9826790 macrumors 604

    h9826790

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    #6
    I think racoon is VPN related, but not 100% sure
     
  7. thomaskyhn thread starter macrumors member

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    #7
    Could be. Strange, though, that it would be running when I'm not using a VPN.
     
  8. grahamperrin macrumors 601

    grahamperrin

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    #8
    Is kernel_task amongst the processes?

    If not, then please change your preferences for Activity Monitor to show processes of all users.
     
  9. thomaskyhn thread starter macrumors member

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    Sep 30, 2010
    #9
    kernel_task is listed – Activity Monitor is set to 'All Processes'.
     
  10. Batt4Christ macrumors member

    Batt4Christ

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    Arkansas
    #10
    Yes - the last two betas brought with them a much higher running temperatures and nearly constant fan running (at high speed). I have reported this to Apple (obviously a known issue, as it was already included in the drop down menu for issues in Feedback Assistant).
     
  11. thomaskyhn thread starter macrumors member

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    Sep 30, 2010
    #11
    Good to hear it's not only here. Hopefully it will be fixed befor the final release.
     
  12. MozMan68 macrumors 68000

    MozMan68

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    #12
    Glad I searched this...threw the latest beta on for the first time today because I didn't want to wait 4 more days...came bak to tmy MacBook Air and was wondering why the fan seemed to be running full blast, non-stop.

    Now that I'm typing this and working on the computer, it seems to have stopped? Could the stock "random" screensaver really be causing it? Or some other background operation?
     
  13. thomaskyhn thread starter macrumors member

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    Sep 30, 2010
    #13
    Well, here it hasn't stopped yet. The fans are going constantly, and the battery is drained in less than half the usual time.
     
  14. MozMan68 macrumors 68000

    MozMan68

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    #14
    Confirmed...screen saver...way worst than when just surfing the web or typing emails or whatever...
     
  15. grahamperrin macrumors 601

    grahamperrin

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    #15
    @thomaskyhn wonder whether it's the combination of software (Sierra) and hardware. Is anything interesting reported by Apple Diagnostics?
     
  16. thomaskyhn thread starter macrumors member

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    #16
    No errors, luckily.
     
  17. thomaskyhn, Sep 20, 2016
    Last edited: Sep 20, 2016

    thomaskyhn thread starter macrumors member

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    #17
    Installing the final version (16A323) didn't solve the problem.
     
  18. thomaskyhn thread starter macrumors member

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