Running VERY hot in Sierra

Discussion in 'macOS Sierra (10.12)' started by bunnspecial, Jun 14, 2016.

  1. bunnspecial macrumors 604


    May 3, 2014
    I'm sitting here typing on a mid-2012 Macbook Pro(9,1, 2.3ghz, 512gb VRAM, HR-AG screen, 1TB Evo) that's currently set up to dual boot Sierra and Mavericks. This is my main computer, so I can't play with Sierra THAT much. Unfortunately, it's one of only two I have that will run it officially, so I can't offload my pre-release testing onto my faithful white Macbook or one of my other computers I usually use.

    In any case, sitting here in Mavericks with a bunch of programs running and using Firefox, the computer is running quite comfortably. Granted I'm not doing anything too difficult, but the CPU is at 36ºC and the case bottom at 29ºC.

    While doing much of the same in Sierra earlier(just light web browsing, and with fewer background programs running) I noticed that the computer was getting uncomfortably warm along with the fans ramping up a lot. I didn't have a temperature monitoring program installed or active, so can't give numbers. Like I said, though, it was hot enough that it was uncomfortable to hold on my lap-and that's with a Spec case on the bottom.

    Has anyone else noticed this?
  2. redheeler macrumors 604


    Oct 17, 2014
    I think it's running a little hotter on my 13" rMBP. I should probably try a PRAM/SMC reset, but it is only a beta 1 after all.
  3. h9826790 macrumors G5


    Apr 3, 2014
    Hong Kong
    10.12 is a completely new OS, it may do some indexing in the background in the first few days. Which can cause the Mac run warmer than normal.
  4. blasto2236 macrumors 6502a

    Nov 4, 2012
    This. My fan was running for most of the day yesterday while Spotlight indexed and I also believe it was scanning for ways to optimize storage. Seems to be back to normal today.
  5. Autistic Behaviour macrumors member

    Autistic Behaviour

    Sep 9, 2015
    Off topic, but I cant seem to get an answer elsewhere...: Seeing as we almost have the same model mac (9,2 for me), did you notice if there was a firmware update with Sierra?
  6. dogslobber macrumors 68040


    Oct 19, 2014
    Apple Campus, Cupertino CA
    It brought my poor 2010 MBA to its knees. I had to disable spotlight it all drives as it was a dog with it running. I got bored and shut the lid.
  7. cas85 macrumors regular

    May 4, 2010
    #7 is constantly getting 200% CPU and spinning up fans like crazy. The release notes only mention a problem with deleted items re-appearing, but I am not seeing that. Only CPU spikes. That's the only performance issue I'm noticing. Tried on 2 installs with 1 being a fresh partition.
  8. SchlomoGoldberg macrumors member


    Sep 24, 2012
    The same "situation" I have in my MBA 11" 2012.

    The fan is continously running. No matter if I just start the computer up, I run Adobe CC or anything else.

    I cannot remember exactly, but I think it happened the same with the DP of El Capitan...
  9. maflynn Moderator


    Staff Member

    May 3, 2009
    I'd say its operations being executed in the background, that should finish at some point.

    What temps are you guys seeing?
  10. rigormortis macrumors 68000


    Jun 11, 2009
    I am having the same problem with notes. I submitted it
  11. Red Fuji macrumors member

    Red Fuji

    Mar 13, 2012
    USA-Pacifc Standard Time
    My MacBook Pro had same issue...
    System Preferences-Icloud-Keychain ( set it up and my problem was solved)
    secd process was running all the time until i set up the Keychain.
  12. mjohansen macrumors regular

    Feb 19, 2010
    My MacBook Pro early 2011 was pushing its limits the first couple of days. Now everything is back to normal :)
  13. border terrier macrumors regular

    Feb 6, 2013
    No issues with either my rMBP 13 or 4.1 flashed to 5.1 MP. Had the usual optimisation period high cpu/memory use for maybe 4 to 6 hours after install but fine since then.
  14. idark77 macrumors 6502


    Dec 2, 2014
    Maybe it is due to the PHOTO Agent, it is indexing photos for Face detection...

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13 June 14, 2016