MBP Fans Coming On With Filevault 2 and Yosemite

Discussion in 'OS X Yosemite (10.10)' started by BasicGreatGuy, Dec 31, 2014.

  1. BasicGreatGuy, Dec 31, 2014
    Last edited: Dec 31, 2014

    BasicGreatGuy Contributor

    BasicGreatGuy

    Joined:
    Sep 21, 2012
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    #1
    Recently installed a new Crucial Mx100 SSD (512GB) on my late 2011 MBP with 8 GB RAM. Did a clean install of Yosemite along with clean install of apps. During the install, I did the default 'enable FileVault." No problems with install. However, I noticed that during boot up, the fans will kick on each time and cut off once home screen was done loading apps etc. I may be wrong here but, it seems that the fans run a little more often with Filevault 2 turned on.

    Has anyone else experienced this? As a temporary test, I turned off FileVault, and the fans haven't turned on at boot. I am just curious why the fans would need to come up with the former. Is it normal?
     
  2. Weaselboy Moderator

    Weaselboy

    Staff Member

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    California
    #2
    I don't have an answer why, but my 2014 13" rMBP does the same thing with FV2 on. I get a brief fan whoosh.... at startup then it goes back to normal. Does not seem to be hurting anything.
     
  3. BasicGreatGuy thread starter Contributor

    BasicGreatGuy

    Joined:
    Sep 21, 2012
    Location:
    In the middle of several books.
    #3
    Thanks for the reply.

    I also noticed that shut down is several seconds faster, not that that is a big deal for me.

    Have you noticed the fans (overall) turning on a little more often with general use with FileVault 2 on, or just at boot?
     
  4. Weaselboy Moderator

    Weaselboy

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    #4
    After the boot, I don't notice any difference with the fans having FV2 on.
     

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