MacOS – What process handles Force Touch

high sierramacmacostrackpad

The Force Touch (URL previews and word definisions) of the trackpad of my MacBook Pro 13" TouchBar often stops working and it works again after a reboot, but I'd like to find a quicker way to make it work again.

What's the process that handles Force Touch on macOS? Then I could try to kill it and see if it works again after restarting.

Best Answer

I did not find the process, but I found out that if the force touch issue is limited to Safari, just restarting it fixed the issue in my case. I guess having multiple days of uptime does have some drawback once in a while.

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MacOS – Why does OS X keep forgetting the trackpad settings

The symptoms you describe are caused by the preference not getting saved to disk. Sometimes the cause is that there is a problem with the file permissions (as per thaatz's answer). Another possibility is that the preference file somehow got corrupted; if this is the case, you can move the preference file (I think the relevant one is ~/Library/Preferences/com.apple.driver.AppleBluetoothMultitouch.trackpad.plist) from its location: this will cause the preference file to be recreated. Of course this will work also for other preferences (though identifying the correct file isn't always as easy); remember to keep the file around (instead of deleting it) so you can restore it in case this fix doesn't work.

MacOS – Two-finger scrolling stops working after a while

A simpler solution that seemed to work for me in Firefox:

open about:config

and then find the properties

browser.gesture.swipe.left
browser.gesture.swipe.right

and set them from Browser:BackOrBackDuplicate and Browser:ForwardOrForwardDuplicate to empty. It's a workaround for a known bug ( https://bugzilla.mozilla.org/show_bug.cgi?id=927702 ).

Best Answer

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