Macbook fan always on

Discussion in 'MacBook' started by sepandee, Aug 25, 2009.

  1. sepandee macrumors regular

    Joined:
    Jun 11, 2007
    #1
    First of all, I meant to say macbook fan is always loud/going too fast. Not that it's always on.

    Something strange has happened to my laptop. The fan is suddenly on all the time, and relatively loud (maybe not the loudest, but still loud).

    I've attached a copy of Activity Monitor. As you can see, nothing unusual. I had even quit Firefox, Entourage, and a host of other programs to see whether one of them is causing the fan to go on a constant rage.

    What gives?
     

    Attached Files:

  2. Eidorian macrumors Penryn

    Eidorian

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    Mar 23, 2005
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    Indianapolis
  3. guydude193 macrumors 6502a

    Joined:
    May 15, 2009
    Location:
    MI
    #3
    Your title made me chuckle. :eek:
    The MacBook fan is always on. It's just a matter of how much it's revving up.
     
  4. sepandee thread starter macrumors regular

    Joined:
    Jun 11, 2007
    #4
    Almost all. The rest can be ignored.

    Well, maybe I should fix my title. I meant macbook fan is constantly going too fast/too loud.
     
  5. Eidorian macrumors Penryn

    Eidorian

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    Mar 23, 2005
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    Indianapolis
    #5
    If you say so.

    Idle is 1800 RPM on older models and 2000 RPM on post Unibody MacBooks. If you can't find any excessive CPU usage, I'd try resetting your PRAM and SMC.
     
  6. sepandee thread starter macrumors regular

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    Jun 11, 2007
    #6
    Mine was above 6000rpm. Only after installing SMCFanControl (which I did just now) did the fan speed finally go down. It's now at 1797rpm and 59 degrees C.
     
  7. NewMacbookPlz macrumors 68040

    NewMacbookPlz

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    Sep 28, 2008
    #7
    By "all processes" he/she (not sure which party Eidorian falls into :eek: ) meant in the drop down menu at the top of activity monitor. In there, you'd see if a widget or a printer spool is hung up and sucking up CPU cycles...
     
  8. Eidorian macrumors Penryn

    Eidorian

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    #8
    I still have a feeling they're only showing their own user processes.
     

    Attached Files:

  9. MacManiac76 macrumors 65816

    MacManiac76

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    Apr 21, 2007
    Location:
    White Mntns, Arizona
    #9
    I believe you are correct on this. Usually it's some system process(es) that causes the fan(s) to go haywire and will not be visible to the user in Activity Monitor unless All Processes is selected, as stated.
     
  10. mrmayor92 macrumors 6502

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    Jul 12, 2008
    Location:
    PA
    #10
    this may seem out of the blue but do you have iantivirus downloaded and running? when i had this app installed my fans on my uMBP were always going about 5000 rpm and it was maxing out my cpu... just a thought
     
  11. NewMacbookPlz macrumors 68040

    NewMacbookPlz

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    Sep 28, 2008
    #11
    Word.

    That's why I thought I'd jump in and add some clarification for the OP :)
     
  12. sepandee thread starter macrumors regular

    Joined:
    Jun 11, 2007
    #12
    Thanks NewMacbookPlz for clarifying. Sorry, it's been 2 years since I switched to mac but since OS X almost never gives me any trouble, I don't know a lot of things about OS X. With windows, I have to fix everything, so I was forced to learn how it operates. THis is the downside to OS X: it makes a lot of us dumber.

    I restarted the computer and so far everything's good. At 60 degrees and 1800rpm. If things go back to the way they were prior to restart, I'll repost a new screenshot of my Activity Monitor.

    Thanks guys/girls.
     
  13. sepandee thread starter macrumors regular

    Joined:
    Jun 11, 2007
    #13
    nope. I don't even know the name of a OS X antivirus :)
    With windows, every month I went through a scan and cleaning process that would take 12 hours. Two native scans, two online scans, some scans in safe mode, etc.
     
  14. Eidorian macrumors Penryn

    Eidorian

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    Mar 23, 2005
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    Indianapolis
    #14
    Not sure if serious...
     
  15. NewMacbookPlz macrumors 68040

    NewMacbookPlz

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    Sep 28, 2008
    #15
    Gotta quit surfing those shady porn sites while in Windows...;)
     
  16. sepandee thread starter macrumors regular

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    Jun 11, 2007
    #16
    No I'm serious. I'm very picky when it comes to keeping my computer and HD clean. Even now, my desktop icons never exceed 5, and once every month I go through my documents and downloads and anything that's been added to delete whatever's not being used :)

    NewMacbookPlz, you're so right I don't know how to respond! Haha. Touche.
     
  17. rekhyt macrumors 65816

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    Jun 20, 2008
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    Part of the old MR guard.
    #17
    Are Macs supposed to go that high? (I never really noticed because on my old Windows laptop I never really bothered to see the temperature and it was always on my desk. It was only the introduction of SMC Fan Control on my Mac did I start noticing.) Once my MacBook went to 90 degrees C while burning a disk. Crazy stuff.
     
  18. Cinch macrumors 6502

    Joined:
    Sep 18, 2005
    #18
    1st gen MacBook fan ramp up when playing flash video

    I notice the same thing on my 1st gen MacBook Core Duo (2GB Ram, 80 GB hard disk, Tiger) when I play youtube videos or most other video clips. Although video podcast and/or quicktime video doesn't produce the same effect.

    Cinch
     
  19. sepandee thread starter macrumors regular

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    Jun 11, 2007
    #19
    That's normal.
     

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