Skip navigation

previous shutdown cause: -128

2142 Views 4 Replies Latest reply: Jan 4, 2013 3:36 PM by nickee812 RSS
hollyfromdenver Level 1 Level 1 (0 points)
Currently Being Moderated
Jan 4, 2012 5:02 AM

My computer was unexpectedly off this morning and there was nothing in the logs concering a shutdown except the following:

previous shutdown cause: -128


What does "-128" indicate?



MacBook Pro, Mac OS X (10.6.8)
  • baltwo Level 9 Level 9 (59,145 points)
    Currently Being Moderated
    Jan 4, 2012 10:31 AM (in response to hollyfromdenver)

    userCanceledErr   = -128


    What might have caused it, I haven't a clue.

    27" i7 iMac 10.6.8 , Mac OS X (10.7.2), G4 450 MP 1.5 GB RAM w/(10.5.8/10.4.11/9.2.2)
  • X423424X Level 6 Level 6 (14,190 points)
    Currently Being Moderated
    Jan 4, 2012 12:14 PM (in response to hollyfromdenver)

    See if the problem continues.  If it does try doing a pram reset and also run Apple Hardware Test.


    Another thing you can try is to disconnect all peripherals (external FWs, USBs).

  • Motorcycle Michael Level 1 Level 1 (115 points)
    Currently Being Moderated
    Jan 24, 2012 6:02 PM (in response to baltwo)

    Hi Baltwo!


    Previous shutdown -128 happening on a 2.1GHz MacBook running 10.5.8, too.


    Machine actually puts up the same "Are you sure you want to shutdown..." dialog box you get from pressing power button, with barely enough time to hit Cancel - if you're paying attention. Turn your back for an instant, and you'll miss it. Do nothing = off.


    Completely random. Battery in good condition and at 100%, AC adapter plugged in and OK, replaced OS (A&I), Reset PRAM, SMU..... sure would like to know what -128 means! Only happens when left unattended for awhile (all sleep, screen saver and related functions set to never or off). "userCanceledErr," huh. What's THAT mean?!


    Only other clue (maybe) was "Throttling respawn: Will start in 4 seconds. Arguments = (null)" and the only reason that caught my attention is because you _might_ have 4 seconds to cancel shutdown. Throttling respawn?

  • nickee812 Level 1 Level 1 (5 points)
    Currently Being Moderated
    Jan 4, 2013 3:36 PM (in response to hollyfromdenver)

    -128 Cause is a problem when a Mac shuts down because it runs out of power ( for MacBooks the battery runs out) If you have UPS, try unplugging it and directly plugging it into an power source. So if you plug it into a power source, it will never run out unless it is a hardware problem. I have a MacBook, and when it powers off suddenly I aslo get -128. Then when I power on, battery charge says Charging 1 %.


More Like This

  • Retrieving data ...

Bookmarked By (0)


  • This solved my question - 10 points
  • This helped me - 5 points
This site contains user submitted content, comments and opinions and is for informational purposes only. Apple disclaims any and all liability for the acts, omissions and conduct of any third parties in connection with or related to your use of the site. All postings and use of the content on this site are subject to the Apple Support Communities Terms of Use.