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?
[Re-Titled by Host]
MacBook Air, OS X Mountain Lion (10.8.5)
"Le Thuc Minh TienOct 25, 2014 11:57 PM Re: Devices rapidly disconnect/reconnect - Macbook Air Mid 2013
Re: Devices rapidly disconnect/reconnect - Macbook Air Mid 2013in 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!!"
This helped me and fixed the issue immediately!! Thanks so much for the helpful tip.
"Le Thuc Minh TienOct 25, 2014 11:57 PM Re: Devices rapidly disconnect/reconnect - Macbook Air Mid 2013
Re: Devices rapidly disconnect/reconnect - Macbook Air Mid 2013in 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!!"
This helped me and fixed the issue immediately!! Thanks so much for the helpful tip.
I had a similar problem where any of my devices (IP6, iPad Air 2) spastically charged from both USB ports and with any approved cable. I wanted to throw my devices out the window after hearing that **** charging sound go on and off, on and off, on and off. After a few minutes the devices would charge normally, however. Resetting the NVRAM solved this for me. I couldn't tell you why, but found it on another forum as a suggestion and it did the trick.
How to Reset NVRAM on your Mac - Apple Support
How to Reset NVRAM on your Mac
Learn about your computer's NVRAM, and when and how to reset it.
What is NVRAM?
A small amount of your computer’s memory, called “non-volatile random-access memory” or NVRAM, stores certain settings in a location that OS X can access quickly. The settings that are stored in NVRAM depend on the type of Mac you're using, and the types of devices connected to it.
Information stored in NVRAM can include:
If you experience issues related to these features, you might need to reset the NVRAM on your computer. For example, if your Mac starts up from a startup disk other than the one you've specified in Startup Disk preferences, or if a question mark icon appears briefly when your Mac starts up.
Resetting NVRAM
After resetting NVRAM, you may need to reconfigure settings for speaker volume, screen resolution, startup disk selection, and time zone information.
If issues related to these features continue on a desktop Mac (like an iMac, Mac mini or Mac Pro), its logic board battery may need to be replaced. The logic board battery on desktop computers helps retain NVRAM settings when your Mac is unplugged. You can take your Mac to an Apple Store or Apple Authorized Service Provider to replace the battery on the logic board.
Learn more
On older Mac computers, similar information was stored in Parameter RAM (PRAM). Resetting NVRAM on Intel-based Macs using the same key combination is like resetting PRAM.
Power related settings can be controlled by the System Management Controller (SMC) on your Mac. If you are experiencing issues with powering on your computer, sleep, wake, charging your Mac notebook battery, or other power-related symptoms, you might need to reset the SMC instead.
Last Modified: Mar 17, 2016
I blew as hard as I could for several times into the USB end of my iPad cable and it worked! I thought of this idea because of the amount of dust in my office. I thought it was causing a poor connection. It did it! Hope your case is the same
The only way that worked with me was to plug the usb cord slowly before reaching the edge of my laptop, when the phone connects I stopped and it worked perfectly. Once I push the usb cord to the end the phone returns to the rapid disconnection.
Hope that helps!
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.
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!!
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.
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.
Try this: It may not work, but it worked for me and someone else. I bought a replacement charger wire for my iPhone 5s, and after trying to use it to connect to my Macbook (late 2013), it rapidly connected/disconnected.
Check the "Show Percentage" on your laptop's battery icon at the top right hand corner and then uncheck it. Hopefully this resolved the issue.
Are you using the same cable with both devices? If possible, use another cable. Also, disconnect all other USB devices while syncing.
Otherwise, follow the applicable instructions on the page linked below.
Just charge your phone till green which is about 20% or more, try again connect to your Mac. There's one guy suggesting this idea and I did so. It worked for both USB ports. Why does my iPad keeps connecting and disconnecting from the new late 2013 iMac
The solution is as follows:
Power on and immediately pres and hold: cmd + alt + p + r. This wil restart the machine, hold these buttons until the machine has tried to bootup two or three times then let go.
The problem could comeback but just use this 2 minute trick and your good to go.
Please let me know of this worked for you!
My hardware: MacBook Pro 15 inch 2015 (fully spect). Had this problem with: iPad 2017, Iphone 7+, Ipad 4, Iphone 6. All works well after this reset.
Launch the Console application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad. Click Utilities, then Console in the icon grid.
Make sure the title of the Console window is All Messages. If it isn't, select All Messages from the SYSTEM LOG QUERIES menu on the left. If you don't see that menu, select
View ▹ Show Log List
from the menu bar.
Click the Clear Display icon in the toolbar. Then try the action that you're having trouble with again. Select any messages that appear in the Console window. Copy them to the Clipboard by pressing the key combination command-C. Paste into a reply to this message (command-V).
When posting a log extract, be selective. In most cases, a few dozen lines are more than enough.
Please do not indiscriminately dump thousands of lines from the log into this discussion.
Important: Some private information, such as your name, may appear in the log. Anonymize before posting.
6/11/13 3:22:40.000 pm kernel[0]: USB (XHCI Root Hub USB 2.0 Simulation):Port 1 on bus 0xa connected or disconnected: portSC(0xe0206e1)
6/11/13 3:22:40.641 pm iTunes[499]: Entered:_AMMuxedDeviceDisconnected, mux-device:62
6/11/13 3:22:40.641 pm iTunes[499]: Entered:__thr_AMMuxedDeviceDisconnected, mux-device:62
6/11/13 3:22:40.643 pm usbmuxd[47]: lockssl_handshake (thread 0x100681000): SSL handshake controlled failure 0: SSL_ERROR_SYSCALL (Early EOF reached)
6/11/13 3:22:40.643 pm iTunes[499]: tid:1bdaf - Mux ID not found in mapping dictionary
6/11/13 3:22:40.643 pm iTunes[499]: tid:1bdaf - Can't handle disconnect with invalid ecid
6/11/13 3:22:40.644 pm usbmuxd[47]: AMDeviceStartSession (thread 0x100681000): Could not start session: kAMDDeviceDisconnectedError
6/11/13 3:22:40.644 pm com.apple.usbmuxd[47]: HandleUSBMuxConnect Client 0x100310a70-usbmuxd/NULL requesting attach to 0x3e:62078 failed, no such device
6/11/13 3:22:40.645 pm usbmuxd[47]: AMDeviceConnect (thread 0x100681000): Could not connect to lockdown port (62078) on device 62 - 9f8b0d4d85ba186d71d009ee79a17687373aa6a3: 0xe8000084.
6/11/13 3:22:40.645 pm usbmuxd[47]: device_os_is_at_least (thread 0x100681000): AMDeviceConnect failed: 0xe8000084
6/11/13 3:22:40.645 pm usbmuxd[47]: _AMDevicePreflightWorker (thread 0x100681000): Pair worker could not pair with device 62: 0xe8000084
6/11/13 3:22:41.022 pm com.apple.usbmuxd[47]: WriteAsyncInternal USB write error on 0x3f-9f8b0d4d85ba186d71d009ee79a17687373aa6a3@0x14100000: 0xe00002c0
6/11/13 3:22:41.022 pm com.apple.usbmuxd[47]: MuxInterfaceSend send failed on 0x3f-9f8b0d4d85ba186d71d009ee79a17687373aa6a3@0x14100000: 0xe00002c0
6/11/13 3:22:41.022 pm com.apple.usbmuxd[47]: WriteAsyncInternal USB write error on 0x3f-9f8b0d4d85ba186d71d009ee79a17687373aa6a3@0x14100000: 0xe00002c0
6/11/13 3:22:41.022 pm com.apple.usbmuxd[47]: MuxInterfaceSend send failed on 0x3f-9f8b0d4d85ba186d71d009ee79a17687373aa6a3@0x14100000: 0xe00002c0
6/11/13 3:22:41.023 pm usbmuxd[47]: lockssl_handshake (thread 0x100681000): SSL handshake controlled failure 0: SSL_ERROR_SYSCALL (Early EOF reached)
6/11/13 3:22:41.023 pm usbmuxd[47]: AMDeviceStartSession (thread 0x100681000): Could not start session: kAMDDeviceDisconnectedError
6/11/13 3:22:41.024 pm com.apple.usbmuxd[47]: WriteAsyncInternal USB write error on 0x3f-9f8b0d4d85ba186d71d009ee79a17687373aa6a3@0x14100000: 0xe00002c0
6/11/13 3:22:41.024 pm com.apple.usbmuxd[47]: MuxInterfaceSend send failed on 0x3f-9f8b0d4d85ba186d71d009ee79a17687373aa6a3@0x14100000: 0xe00002c0
6/11/13 3:22:41.024 pm com.apple.usbmuxd[47]: HandleUSBMuxConnect Client 0x100310aa0-usbmuxd/NULL MuxTCPInitiateConnect failed
6/11/13 3:22:41.025 pm usbmuxd[47]: AMDeviceConnect (thread 0x100681000): Could not connect to lockdown port (62078) on device 63 - 9f8b0d4d85ba186d71d009ee79a17687373aa6a3: 0xe8000084.
6/11/13 3:22:41.025 pm usbmuxd[47]: device_os_is_at_least (thread 0x100681000): AMDeviceConnect failed: 0xe8000084
6/11/13 3:22:41.025 pm usbmuxd[47]: _AMDevicePreflightWorker (thread 0x100681000): Pair worker could not pair with device 63: 0xe8000084
6/11/13 3:22:41.026 pm iTunes[499]: Entered:_AMMuxedVersion2DeviceConnected, mux-device:63
6/11/13 3:22:41.026 pm com.apple.usbmuxd[47]: WriteAsyncInternal USB write error on 0x3f-9f8b0d4d85ba186d71d009ee79a17687373aa6a3@0x14100000: 0xe00002c0
6/11/13 3:22:41.026 pm com.apple.usbmuxd[47]: MuxInterfaceSend send failed on 0x3f-9f8b0d4d85ba186d71d009ee79a17687373aa6a3@0x14100000: 0xe00002c0
6/11/13 3:22:41.026 pm com.apple.usbmuxd[47]: HandleUSBMuxConnect Client 0x10020a010-Senuti/com.fadingred.Senuti MuxTCPInitiateConnect failed
6/11/13 3:22:41.026 pm com.apple.usbmuxd[47]: WriteAsyncInternal USB write error on 0x3f-9f8b0d4d85ba186d71d009ee79a17687373aa6a3@0x14100000: 0xe00002c0
6/11/13 3:22:41.026 pm com.apple.usbmuxd[47]: MuxInterfaceSend send failed on 0x3f-9f8b0d4d85ba186d71d009ee79a17687373aa6a3@0x14100000: 0xe00002c0
6/11/13 3:22:41.026 pm com.apple.usbmuxd[47]: HandleUSBMuxConnect Client 0x100310790-iTunesHelper/com.apple.iTunesHelper MuxTCPInitiateConnect failed
6/11/13 3:22:41.027 pm com.apple.usbmuxd[47]: WriteAsyncInternal USB write error on 0x3f-9f8b0d4d85ba186d71d009ee79a17687373aa6a3@0x14100000: 0xe00002c0
6/11/13 3:22:41.027 pm com.apple.usbmuxd[47]: MuxInterfaceSend send failed on 0x3f-9f8b0d4d85ba186d71d009ee79a17687373aa6a3@0x14100000: 0xe00002c0
6/11/13 3:22:41.027 pm com.apple.usbmuxd[47]: HandleUSBMuxConnect Client 0x1003110e0-iTunes/com.apple.iTunes MuxTCPInitiateConnect failed
6/11/13 3:22:41.028 pm com.apple.usbmuxd[47]: WriteAsyncInternal USB write error on 0x3f-9f8b0d4d85ba186d71d009ee79a17687373aa6a3@0x14100000: 0xe00002c0
6/11/13 3:22:41.028 pm com.apple.usbmuxd[47]: MuxInterfaceSend send failed on 0x3f-9f8b0d4d85ba186d71d009ee79a17687373aa6a3@0x14100000: 0xe00002c0
6/11/13 3:22:41.028 pm com.apple.usbmuxd[47]: HandleUSBMuxConnect Client 0x10030fe00-iTunes/com.apple.iTunes MuxTCPInitiateConnect failed
6/11/13 3:22:41.028 pm iTunesHelper[209]: AMDeviceConnect (thread 0x7fff7740e310): Could not connect to lockdown port (62078) on device 63 - 9f8b0d4d85ba186d71d009ee79a17687373aa6a3: 0xe8000065.
6/11/13 3:22:41.029 pm Senuti[642]: AMDeviceConnect (thread 0x7fff7740e310): Could not connect to lockdown port (62078) on device 63 - 9f8b0d4d85ba186d71d009ee79a17687373aa6a3: 0xe8000065.
6/11/13 3:22:41.029 pm com.apple.usbmuxd[47]: WriteAsyncInternal USB write error on 0x3f-9f8b0d4d85ba186d71d009ee79a17687373aa6a3@0x14100000: 0xe00002c0
6/11/13 3:22:41.029 pm com.apple.usbmuxd[47]: MuxInterfaceSend send failed on 0x3f-9f8b0d4d85ba186d71d009ee79a17687373aa6a3@0x14100000: 0xe00002c0
6/11/13 3:22:41.029 pm com.apple.usbmuxd[47]: HandleUSBMuxConnect Client 0x10030ffe0-iTunes/com.apple.iTunes MuxTCPInitiateConnect failed
6/11/13 3:22:41.030 pm com.apple.usbmuxd[47]: HandleUSBMuxConnect Client 0x100311020-iTunesHelper/com.apple.iTunesHelper requesting attach to 0x3f:62078 failed, no such device
6/11/13 3:22:41.030 pm iTunes[499]: AMDeviceConnect (thread 0x11613c000): Could not connect to lockdown port (62078) on device 63 - 9f8b0d4d85ba186d71d009ee79a17687373aa6a3: 0xe8000065.
6/11/13 3:22:41.031 pm iTunesHelper[209]: AMDeviceConnect (thread 0x7fff7740e310): Could not connect to lockdown port (62078) on device 63 - 9f8b0d4d85ba186d71d009ee79a17687373aa6a3: 0xe8000084.
6/11/13 3:22:41.031 pm com.apple.usbmuxd[47]: HandleUSBMuxConnect Client 0x100408610-iTunes/com.apple.iTunes requesting attach to 0x3f:62078 failed, no such device
6/11/13 3:22:41.030 pm Senuti[642]: FRModernDeviceManager.m:128:-[FRModernDeviceManager mountDevice:] AMDeviceConnect: Connect failed: -402653083
6/11/13 3:22:41.031 pm iTunes[499]: Entered:_AMMuxedDeviceDisconnected, mux-device:63
6/11/13 3:22:41.032 pm iTunes[499]: Entered:__thr_AMMuxedDeviceDisconnected, mux-device:63
6/11/13 3:22:41.032 pm iTunes[499]: AMDeviceConnect (thread 0x11613c000): Could not connect to lockdown port (62078) on device 63 - 9f8b0d4d85ba186d71d009ee79a17687373aa6a3: 0xe8000084.
6/11/13 3:22:41.032 pm iTunes[499]: tid:20527 - Mux ID not found in mapping dictionary
6/11/13 3:22:41.032 pm iTunes[499]: tid:20527 - Can't handle disconnect with invalid ecid
6/11/13 3:22:41.413 pm iTunes[499]: Entered:_AMMuxedDeviceDisconnected, mux-device:64
6/11/13 3:22:41.414 pm usbmuxd[47]: lockssl_handshake (thread 0x100681000): SSL handshake controlled failure 0: SSL_ERROR_SYSCALL (Early EOF reached)
6/11/13 3:22:41.414 pm iTunes[499]: Entered:__thr_AMMuxedDeviceDisconnected, mux-device:64
6/11/13 3:22:41.414 pm iTunes[499]: tid:20527 - Mux ID not found in mapping dictionary
6/11/13 3:22:41.414 pm usbmuxd[47]: AMDeviceStartSession (thread 0x100681000): Could not start session: kAMDDeviceDisconnectedError
6/11/13 3:22:41.414 pm iTunes[499]: tid:20527 - Can't handle disconnect with invalid ecid
6/11/13 3:22:41.415 pm com.apple.usbmuxd[47]: HandleUSBMuxConnect Client 0x100310790-usbmuxd/NULL requesting attach to 0x40:62078 failed, no such device
6/11/13 3:22:41.415 pm usbmuxd[47]: AMDeviceConnect (thread 0x100681000): Could not connect to lockdown port (62078) on device 64 - 9f8b0d4d85ba186d71d009ee79a17687373aa6a3: 0xe8000084.
6/11/13 3:22:41.416 pm usbmuxd[47]: device_os_is_at_least (thread 0x100681000): AMDeviceConnect failed: 0xe8000084
6/11/13 3:22:41.416 pm usbmuxd[47]: _AMDevicePreflightWorker (thread 0x100681000): Pair worker could not pair with device 64: 0xe8000084
6/11/13 3:22:41.795 pm iTunes[499]: Entered:_AMMuxedDeviceDisconnected, mux-device:65
6/11/13 3:22:41.796 pm usbmuxd[47]: lockssl_handshake (thread 0x100681000): SSL handshake controlled failure 0: SSL_ERROR_SYSCALL (Early EOF reached)
6/11/13 3:22:41.796 pm iTunes[499]: Entered:__thr_AMMuxedDeviceDisconnected, mux-device:65
6/11/13 3:22:41.796 pm iTunes[499]: tid:985b - Mux ID not found in mapping dictionary
6/11/13 3:22:41.797 pm iTunes[499]: tid:985b - Can't handle disconnect with invalid ecid
6/11/13 3:22:41.797 pm usbmuxd[47]: AMDeviceStartSession (thread 0x100681000): Could not start session: kAMDDeviceDisconnectedError
6/11/13 3:22:41.797 pm com.apple.usbmuxd[47]: HandleUSBMuxConnect Client 0x10050f3c0-usbmuxd/NULL requesting attach to 0x41:62078 failed, no such device
6/11/13 3:22:41.798 pm usbmuxd[47]: AMDeviceConnect (thread 0x100681000): Could not connect to lockdown port (62078) on device 65 - 9f8b0d4d85ba186d71d009ee79a17687373aa6a3: 0xe8000084.
6/11/13 3:22:41.798 pm usbmuxd[47]: device_os_is_at_least (thread 0x100681000): AMDeviceConnect failed: 0xe8000084
6/11/13 3:22:41.798 pm usbmuxd[47]: _AMDevicePreflightWorker (thread 0x100681000): Pair worker could not pair with device 65: 0xe8000084
6/11/13 3:22:42.183 pm usbmuxd[47]: lockssl_handshake (thread 0x100681000): SSL handshake controlled failure 0: SSL_ERROR_SYSCALL (Early EOF reached)
6/11/13 3:22:42.183 pm iTunes[499]: Entered:_AMMuxedDeviceDisconnected, mux-device:66
6/11/13 3:22:42.184 pm usbmuxd[47]: AMDeviceStartSession (thread 0x100681000): Could not start session: kAMDDeviceDisconnectedError
6/11/13 3:22:42.184 pm com.apple.usbmuxd[47]: HandleUSBMuxConnect Client 0x10050f3c0-usbmuxd/NULL requesting attach to 0x42:62078 failed, no such device
6/11/13 3:22:42.184 pm iTunes[499]: Entered:__thr_AMMuxedDeviceDisconnected, mux-device:66
6/11/13 3:22:42.185 pm iTunes[499]: tid:20527 - Mux ID not found in mapping dictionary
6/11/13 3:22:42.185 pm iTunes[499]: tid:20527 - Can't handle disconnect with invalid ecid
6/11/13 3:22:42.185 pm usbmuxd[47]: AMDeviceConnect (thread 0x100681000): Could not connect to lockdown port (62078) on device 66 - 9f8b0d4d85ba186d71d009ee79a17687373aa6a3: 0xe8000084.
6/11/13 3:22:42.186 pm usbmuxd[47]: device_os_is_at_least (thread 0x100681000): AMDeviceConnect failed: 0xe8000084
6/11/13 3:22:42.186 pm usbmuxd[47]: _AMDevicePreflightWorker (thread 0x100681000): Pair worker could not pair with device 66: 0xe8000084
6/11/13 3:22:42.567 pm iTunes[499]: Entered:_AMMuxedDeviceDisconnected, mux-device:67
6/11/13 3:22:42.568 pm usbmuxd[47]: lockssl_handshake (thread 0x100681000): SSL handshake controlled failure 0: SSL_ERROR_SYSCALL (Early EOF reached)
Same problem too, disco/reco rapidly on a late rMBP with iPad3. Multiple usb cable tested, marvericks fresh install too ! No way to have a second without dsico/reco. (iPad working well on a pc and other macs).
iPhone keeps disconnecting from Mac
