Super User is a question and answer site for computer enthusiasts and power users. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

i've got a MacBook Pro mid 2012 with Mountain Lion. Sometimes when i wake up my computer from sleep (open the laptop), all the multi touch gestures of the trackpad (4 fingers to change screen, 3 finger to move windows) don't work anymore. Tap to click, Two finger navigation still work

I don't understand why but it's not everytime so maybe i could just reload the driver or make it work again. Is there a way to restart the trackpad service or should i really restart the computer completely to make it work again (it works but i don't want to restart it)


EDIT : i have a Magic Mouse and the gesture of the Magic Mouse to change screen doesn't work anymore either. So it's maybe more a general problem than Trackpad. Switching screen with Ctrl+Arrows works though.

share|improve this question
up vote 2 down vote accepted
  1. Open Terminal
  2. Type "killall Dock"
  3. Press Enter on your keyboard

Problem solved. At least temporarily. The gestures will randomly stop working again, and when they do, repeat the above steps.

share|improve this answer

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .