kylecisd

Q: iPads not being recognized when using apple configurator software

I have an iPad cart with 25 iPad's. I am using a MacBook Air and the apple configurator software to try to manage the iPad's. The problem is, only 21 of the 25 iPads will show up in the apple configurator "prepare" section. All of the iPads are not being recognized. When I use a MacBook Pro all 25 iPad's will show. So the problem seems to be with the MacBook Air and/or Apple Configurator. Any suggestions? We have 30 carts total with some having up to 30 iPads so I am trying to find a fix for this.  

MacBook Air, OS X Mountain Lion (10.8.4)

Posted on Jun 26, 2013 9:28 AM

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Q: iPads not being recognized when using apple configurator software

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  • by smgallagher,

    smgallagher smgallagher Aug 21, 2013 11:57 AM in response to kylecisd
    Level 1 (135 points)
    Aug 21, 2013 11:57 AM in response to kylecisd

    This seems to be an issue related to the new 2013 MacBook Air models.  I've seen it pop up a few times now, and the common factor is always a 2013 MacBook Air.

     

    A "solution" doesn't seem to exist yet.  The workaround at this point would be to either use any older Mac to do the syncing, or only connect and sync half of the devices at a time.

  • by klutzak,

    klutzak klutzak Mar 10, 2014 11:55 AM in response to smgallagher
    Level 1 (0 points)
    Mar 10, 2014 11:55 AM in response to smgallagher

    There is a simple terminal command to change the USB power management of the Airs that will allow more than 18-20 ipads to be recognized at the same time. I was able to use it to configure 30 ipads without issue.

     

    Unfortunately I lost it and I can't find it online again.

     

    Which brought me to this item in the forum.

     

    Does anyone know what that terminal command is???

  • by kylecisd,Solvedanswer

    kylecisd kylecisd Mar 17, 2014 5:14 AM in response to klutzak
    Level 1 (0 points)
    Mar 17, 2014 5:14 AM in response to klutzak

    sudo nvram usb-options="%01%00%00%00"


  • by Paulywalnuts23,

    Paulywalnuts23 Paulywalnuts23 Apr 2, 2014 7:40 AM in response to kylecisd
    Level 1 (0 points)
    Apr 2, 2014 7:40 AM in response to kylecisd

    So to switch the power back, do you just change the 1 to a 0? Meaning the command to change it back would be

     

    sudo nvram usb-options="%00%00%00%00"


    Thanks..

  • by kylecisd,

    kylecisd kylecisd Apr 11, 2014 9:05 AM in response to Paulywalnuts23
    Level 1 (0 points)
    Apr 11, 2014 9:05 AM in response to Paulywalnuts23

    To undo this change and restore your Mac to its default configuration:

     

    • Open Terminal.
    • Enter this command and press Return:

     

    sudo nvram -d usb-options
  • by whiteboxnyc,

    whiteboxnyc whiteboxnyc Sep 9, 2016 12:24 PM in response to kylecisd
    Level 1 (4 points)
    Sep 9, 2016 12:24 PM in response to kylecisd

    I hate to intrude in a solved thread, yet the command doesn't seem to work on 10.11.5 Mac book pro.

     

    As of this writing I've yet to educate myself on what '%00%.." really means.

    Was hoping someone can point me to some documents that will help resolve this, before I reset to downgrading to 10.11.4, which is the version I'm told work for sure.

     

    Thanks in advance.