iOS devices connecting and disconnecting rapidly.
I've been having this issue for a while with my iPad Air 2: When I plug it into my MacBook, it will act as though I am plugging it in and unplugging it rapidly, and will not stay connected long enough for me to sync or backup with iTunes.
My iPhone has connected perfectly until today, when it started doing the same thing as the iPad. All other USB devices work fine, and my iPad and iPhone both connect with the windows computers at work just fine. I've tested with both USB ports on my MacBook, and with several known working cords, both Apple branded and not.
I've done a lot of searching, and haven't found any definitive answers or solutions, but today I thought I would try something.
I use Windows 10 in VMWare on my laptop for work (and yes I made sure it wasn't running before trying to sync to make sure that wasn't causing the connectivity issues). But today I opened Windows on my MacBook, and when I plugged in my iPad I told it to open in Windows, and voila it connected to iTunes in windows fine and stayed connected.
This leads me to believe it is some sort of software issue on the MacBook side of things. I even tried closing itunes and just plugging my phone in to charge, and it again acted as though I was continuously plugging it in and unplugging it, but stayed connected in Windows.
Is there something I can do to correct this? I thought it might be an iTunes issue, but since it wouldn't even keep my phone connected enough to charge without iTunes open, I'm assuming it's an OSX issue.
Any suggestions would be greatly appreciated!!
I had this issue for over a year. Today I stumbled across a page that said to do a SMC reset and now it is all fixed!! Shutdown the Mac and connect the power cable. Hold down Shift+Control+Option+Power all at the same time for a few seconds. The light on the power adapter will blink or change colour once you remove your fingers (all at the same time). When it does this you’ll know ths SMC reset is complete. Turn your MacBook on by hitting the power button like normal. It should be fixed now
由 luucy.brooks 完成的
I had this problem connecting two devices at once through a USB hub Now realise it was because the power was coming from a low power wall charger 5v and it was trying to charge the MacBook as well
由 Chris Robinson 完成的
I had this problem and solved it by buying a powered USB port that provides external power to the devices that I plug into it. I bought it for CD burners, but now I use it when plugging in my iPad into my Mac
由 stevecmp 完成的
Tried everything, the only thing that works, is charging my iPhone 11 and 8 to 100%, then the disconnecting solved.
由 rmwerkhoven 完成的
Tried reset location & privacy. Didn't work. I swap with another cable (also genuine from Apple), problem solved.
由 flobby worm 完成的