staceyaytch

Q: Devices rapidly disconnect/reconnect - Macbook Air Mid 2013

Since upgrading to Mavericks, I have been unable to sync devices (specifically ipad mini and iphone 4s) to my MId 2013 Macbook Air. They wil rapidly connect and disconnect, and I'm unable to do anything with the device. This happens with both USB ports.  Any suggestions?

MacBook Air, OS X Mountain Lion (10.8.5)

Posted on Nov 4, 2013 12:58 AM

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Q: Devices rapidly disconnect/reconnect - Macbook Air Mid 2013

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  • by Tommy2Kind,Helpful

    Tommy2Kind Tommy2Kind Oct 20, 2014 3:12 PM in response to staceyaytch
    Level 1 (10 points)
    Oct 20, 2014 3:12 PM in response to staceyaytch

    I had the same problem on my iMac, and I tried everything to fix it, but nothing worked.  My iPhone would sync fine in iTunes, but my iPad air would rapidly connect and disconnect.  After I had tried everything suggested on this page and nothing worked, eventually, I tried holding the USB cable in different positions to see if that would help. To my surprise, it fixed the problem.  Even though the same cord would sync my iPhone and my wife's with no problems, it wouldn't sync my iPad unless I moved the cord slightly in the USB port.  To this day, I still have to do the same thing when I sync my iPad air.  I don't know why or how it works; all I know is that it does.  I know what you're thinking - this is nonsense.  There are 4 USB ports on my iMac.  It doesn't matter which one I use, this little trick makes it work.   I know what your thinking - it must be the cable.  I have plenty of Apple cables and I've tried them all, in every USB port; but the only thing that stops iTunes from freaking out when I connect my iPad is moving the cable slightly upwards in the USB port.

  • by Le Thuc Minh Tien,Helpful

    Le Thuc Minh Tien Le Thuc Minh Tien Oct 25, 2014 11:57 PM in response to staceyaytch
    Level 1 (9 points)
    Safari
    Oct 25, 2014 11:57 PM in response to staceyaytch

    i have same issue but i find the way to fix it. Try this:

    tap Settings > General > Reset > Reset Location & Privacy. This will also reset your location and privacy settings. You can also untrust all computers by tapping Settings > General > Reset > Reset Network Settings on the ipad/iphone

    hope you fix it!!

  • by Agus R.,

    Agus R. Agus R. Nov 5, 2014 9:52 AM in response to staceyaytch
    Level 1 (0 points)
    Nov 5, 2014 9:52 AM in response to staceyaytch

    That God I'm not the only one with this problem. I thought I have a defective rMBP. I have this problem with 15" rMBP late 2013 and two iPads. One is iPad 4, the other is iPad Mini 2. I have an iPhone 4s without this issue. Seems like this only happens to my devices with lightning cable.

     

    What I do is switch the cable to other ports until it works. After it is connected I immediately check 'Sync this iPad over WiFi' so I don't need to sync via cable anymore. But this still an annoying issue though. It freak my out the first time I see it. I thought my iPad or Mac is broken.

     

    Hope Apple recognise this issue and do something to fix it.

     

    My rMBP is on Yosemite. Both iPads on iOS 8.

  • by crandyhill,

    crandyhill crandyhill Nov 5, 2014 6:57 PM in response to Agus R.
    Level 1 (5 points)
    Nov 5, 2014 6:57 PM in response to Agus R.

    I have this problem with a 1 year old MacBook Air & Retina iPad Mini. It occurred with a genuine Apple lightning cable,  I tried rebooting both devices, no help. And never had this problem with an iPhone, either 5, 5s, 4s, or iPods.

     

    Finally I switched to another Apple USB cable, and it worked for a moment then stopped.  Finally I switched to a pretty new Amazon cable and it worked fine. But when I disconnected, then brought the iPad back an hour later, suddenly I get the repeating connect/disconnect sequence. If I switch the cable to the other USB port it connects fine. When the bad connections occur I get lots of these errors in Console.

     

    11/5/14 7:53:32.000 PM kernel[0]: Sandbox: com.apple.Safari(3833) deny file-read-data /

  • by abcpt,

    abcpt abcpt Nov 26, 2014 4:49 PM in response to Tommy2Kind
    Level 1 (0 points)
    Nov 26, 2014 4:49 PM in response to Tommy2Kind

    This actually worked! In my case, I have a 5K Retina iMac and there would be a problem using any cable (including an old 30 pin plus an adapter) and an iPad Air 2. No problems with iPhone. I nudged the USB cable a little in the iMac and boom, no more crazy disconnect/connect problem.

  • by montymad,

    montymad montymad Dec 13, 2014 6:14 PM in response to Tommy2Kind
    Level 1 (0 points)
    Dec 13, 2014 6:14 PM in response to Tommy2Kind

    Wow... so I also tried everything posted here, but after wiggling the USB cable (end connected to my mac) around, and nudging it around... it connected. No idea why. Weirdly, the iPad works with the same cable perfectly on my PC, and my iPhone works with the cable too on PC and Mac. Right...

  • by jones6951,Helpful

    jones6951 jones6951 Dec 14, 2014 9:29 AM in response to staceyaytch
    Level 1 (5 points)
    Dec 14, 2014 9:29 AM in response to staceyaytch

    I was having this problem but fixed it by going to

    Disk Utility > Verify Disk Permissions and then Repair Disk Permissions.

     

    Good luck!

  • by Misha Talisman,

    Misha Talisman Misha Talisman Jan 10, 2015 6:11 AM in response to jones6951
    Level 1 (0 points)
    Jan 10, 2015 6:11 AM in response to jones6951

    Great idea ! It works !

  • by Juanbuan,

    Juanbuan Juanbuan Jan 28, 2015 8:26 AM in response to staceyaytch
    Level 1 (0 points)
    Jan 28, 2015 8:26 AM in response to staceyaytch

    I have the same problem with my iMac 21.5 2013. My iPad air and iPhone 6 still won't connect, i've used 4 apple USB cables and 3 amazon cable and nothing works. Any solutions?

     

    Running OS X YOSEMITE v. 10.10.1

  • by hectorpal,

    hectorpal hectorpal Jan 28, 2015 8:25 AM in response to Juanbuan
    Level 1 (0 points)
    Jan 28, 2015 8:25 AM in response to Juanbuan

    Ask apple for a new cable.

  • by Juanbuan,

    Juanbuan Juanbuan Jan 28, 2015 8:29 AM in response to hectorpal
    Level 1 (0 points)
    Jan 28, 2015 8:29 AM in response to hectorpal

    I've asked apple 3 times, still nothing. All my USB cable works on my pc and Macbook air.

  • by Invizzer,

    Invizzer Invizzer Mar 6, 2015 8:02 AM in response to staceyaytch
    Level 1 (0 points)
    Mar 6, 2015 8:02 AM in response to staceyaytch

    The same problem. MBA 2013 + iPhone 5S.

    I've googled this issue and the are TONS of people who are having it. Just look at the number of views of this post.

    It seems it can happen to any iOS device connected by any cable (lightning or 30-pin) to a computer with any operation system. And it happens since like the beginning of iOS (I've found posts published in 2008). And there is no solution, just some guesses none of which worked for me.

     

    Apple, what the heck? Are you gonna do something about it?

  • by geebeeAU,

    geebeeAU geebeeAU Mar 20, 2015 12:27 AM in response to Invizzer
    Level 1 (0 points)
    Mar 20, 2015 12:27 AM in response to Invizzer

    it is a cable recognition issue.

     

    keep swapping cables to powered ports and the error will not occur.

    i was using a keyboard port which was underpowered(overcorrect drawn0 but no current warning occurred..just the MXUSB error

     

    switched to a powered hub and no problem

     

    i am using a non apple micro usb to a battery back charger so apple certified seems not to be the issue

     

    it is under powered usb ports

  • by geebeeAU,

    geebeeAU geebeeAU Mar 20, 2015 12:32 AM in response to geebeeAU
    Level 1 (0 points)
    Mar 20, 2015 12:32 AM in response to geebeeAU

    also the issue re-occurred when the device timed out and locked the screen..

    should not happen..but does!

  • by DevCB,

    DevCB DevCB Apr 19, 2015 10:31 PM in response to staceyaytch
    Level 1 (0 points)
    Apr 19, 2015 10:31 PM in response to staceyaytch

    I also have this problem with my rMBP 2013 and my iPad. I tested 3 different cables and all of them didn't work.

     

    I fixed it by using an USB 2.0 Hub (Bus Powered) between the MacBook and the iPad.

    The only problem is, that you can't charge your iPad with an USB Hub but you can sync.

     

     

    This is really annoying.  I talked with Apple Support and they said I should replace the MacBook's logic board.

     

    Do you think this could completely solve this issue?

     

     

    Edit: I found something interesting:

    If i launch a VM (Fusion) and connect the iPad directly to the VM, it stays connected. If I then disconnect it from the VM and connect it to OS X  (without unplug),

    the iPad also stays connected. But if i unplug the cable and reconnect it, the same problem occurs again.

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