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From time to time, my Magic Trackpad gestures will stop working. I can restart to bring them back, but this is pretty disruptive.

Is there a process I can kill to bring them back?

(I've tried turning off the Magic Trackpad; unfortunately, it doesn't fix the problem.)

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4 Answers

up vote 2 down vote accepted

If resetting the necessary prefs does not help but the Magic Trackpad is still connected, this is a beautiful alternative: BetterTouchTool

In fact, this is much more fun since it makes the Magic Trackpad so powerful.

http://www.boastr.de/

enter image description here

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When a reboot didn't fix this, I went to System Preferences > Trackpad > More Gestures and changed Mission Control to Swipe up with three fingers and App Exposé to Swipe down with three fingers. Those gestures now worked with 3 fingers. Then I changed it back to Swipe up/down with four fingers on both and they started working again using the four-finger gestures.

In 10.8, running killall Dock seems to bring back trackpad gestures as well.

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For me, the problem was that dragging got turned off in Universal Access somehow. Go to Settings -> Universal Access -> Mouse & Trackpad -> Trackpad Options and turn on Dragging if it's not enabled.

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This started happening to me on my early-2013 MacBook Pro since I upgraded to Mavericks. It happens both and with and without the Magic Trackpad.

Based on the note at the end of Andrew's answer, I ran killall Dock from a Terminal window and the gestures started working again.

This blog post has more information about the issue and there is an Alfred extension to fix it too.

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