iOS devices connecting and disconnecting rapidly

I have been struggled with this issue for years. When connect my iPad to my Macbook Pro, it connected and disconnected then connected and disconnected.... This make me crazy sometime. Today I decided to research for a solution.

After googling, I found this thread https://www.ifixit.com/Answers/View/473839/iOS+devices+connecting+and+disconnecting+rapidly.

Below are some methods I tried.

1. Reset SMC

- Unplug the power, then shut down your Mac.
- Hold the left Shift+Control+Option keys down, then press and hold the power button down. Keep all four buttons pressed down for ten seconds, then let go.
- Plug the power cable back in, then turn on your Mac.

2. Reset the privacy settings in iOS

Settings > General > Reset > Reset Location & Privacy

3. Restart usbd deamon program

Open terminal, run this

sudo killall usbd

If not work, try this

sudo killall -STOP -c usbd

And lucky me. My iPad can connect with my Macbook Pro after running sudo killall -STOP -c usbd and now I can debug using my iPad.

You can add alias to make quick access to it

echo -n "alias fix-ios='sudo killall -STOP -c usbd'" >> ~/.zshrc

Later then, just run fix-ios

If you got this issue, please try then let me know which one works for you.

Happy ending!