rMBP fan speed issue

Discussion in 'MacBook Pro' started by conqueso, Jan 16, 2013.

  1. conqueso macrumors newbie

    Jan 16, 2013
    I've had a rMBP (2.7 GHz Intel Core i7 16GB ram with solid state drive 10.8.2) for a little over 3 weeks. For the most part it's only gotten hot when I use it on my lap, and the fans have been kicking up when I'd expect them to. Last night afterr I installed and was running the Folding@Home application I noticed the fans went up to maximum speed and were the loudest I've heard them yet. This didn't bother because I was running a program that's probably somewhat taxing on my CPU in addition to the fact that I'd been using the computer on my lap for several hours. I decided to shut down for the night. In the morning upon booting the fans kicked up after ~20 seconds and continued to stay at a high RPM even though I had no programs running and the computer had been sitting in a cool room all night.

    I've tried resetting the SMC, which resulted in the fans being at max RPM nonstop from the second I hit the power button until shutdown. I reset the SMC again and it went back to the previous state, where the fans kick up after 20 seconds or less.

    I've read of other people having similar problems over the past couple of months with rMPBs but so far have not heard of the problem being resolved. My iStat readouts are:

    HD: Macintosh... 112
    CPU/ Heatsink 122
    Airport Card 121
    Enclosure Base 92
    Enclosure Base 2 92
    Enclosure Base 3 85
    GPU 140
    GPU Diode 155

    Right Fan ~5500 RPM
    Left Fan ~5900 RPM
  2. BlaqkAudio macrumors 6502

    Jun 24, 2008
    New York
    Folding@Home autostarts at login. It's probably maxing out your CPU and causing your fans to kick in on max speed. If you want to disable autostart, I believe you just delete /Library/LaunchDaemons/Folding@home.plist
  3. conqueso thread starter macrumors newbie

    Jan 16, 2013
    Folding@Home is not running according to Activity Monitor. I checked Library/LaunchDaemons/ just to be sure and there is no Folding@home.plist file in there
  4. throAU macrumors 603


    Feb 13, 2012
    Perth, Western Australia
    Find out how to properly uninstall folding@home and verify if the problem still happens without it. I suspect it is still running as a unix daemon somehow and not an OS X specific/visible program.

    Due to the nature of turbo boost, running a program that maxxes your CPU (as folding @ home will, it will consume all the CPU idle time) will cause it to get hot and fans to come on.

    Folding @ home on a portable machine is a bad idea, it will murder your battery life, too.
  5. conqueso thread starter macrumors newbie

    Jan 16, 2013
    that was it!! thank you both so much. There was indeed a file living in /Library/LaunchDaemons but it had a slightly different name so I overlooked it at first. Lesson learned, no Folding@Home on a laptop!
  6. 0r30 macrumors 6502


    Aug 12, 2010
    My rMBP seems to do the same when running Microsoft Outlook on my laptop.

    I have the same specifications as you.

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