Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
Holy poop! I just reset my pmu and pram or nvram and now mine is doing the same thing! Were you screwing around with your macbook to?😀

Nope, it just started happening one day. It only happens every once in a while. not everytime I connect.
 
make sure it is seated all the way, what you are describing is a sign of a failing DC-IN board, contact your local genius bar for a repair.
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.