how to find out what caused a Kernel Panic?

Discussion in 'OS X Yosemite (10.10)' started by adcx64, Sep 7, 2014.

  1. adcx64 macrumors 65816

    adcx64

    Joined:
    Nov 17, 2008
    Location:
    Philadelphia
    #1
    so today, my MBA (2011) crashed while watching a video and went to the "your computer restarted because of a problem" screen. then, upon restarting, i got a typical Kernel Panic with black text on the white background. Any way to tell what caused this?
     
  2. Weaselboy Moderator

    Weaselboy

    Staff Member

    Joined:
    Jan 23, 2005
    Location:
    California
    #2
    Open this folder in Finder and there should be a crash log from the date/time of the KP. Also, give this a look.

    Code:
    /Library/Logs/DiagnosticReports
     
  3. grahamperrin macrumors 601

    grahamperrin

    Joined:
    Jun 8, 2007
    #3
    NVRAM and logs of kernel panics

    The following command, run in Terminal, will cause any future log of a kernel panic to include additional information. That information can make the cause(s) much easier to discover.

    Code:
    sudo nvram boot-args="keepsyms=y"
    For that boot argument to become effective, restart the Mac.

    The effect will last until the setting is cleared from NVRAM.

    ----------

    +1

    More recent Apple article about kernel panics:

    OS X Mavericks: If your Mac restarts and a message appears

    OS X: When your computer spontaneously restarts or displays "Your computer restarted because of a problem."
     

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