I just system restored after a kernel panic, and I am no longer seeing this feature. It used to be that when you scrolled (say, down this page in Firefox), there was some physics in the scroll, rather than a hard stop and start. Since system restoring, this is gone. How do I bring it back? I am using Snow Leopard.

2 Answers 2


I think you may be referring to the "Scroll with inertia" option, which is found in System Preferences > Trackpad. If it's set to scroll with inertia, but inertial scrolling isn't working, try toggling it to "without inertia" then back to "with inertia".

If that doesn't work, you can try deleting the preference file, "com.apple.driver.AppleBluetoothMultitouch.trackpad.plist" found in ~/Library/Preferences. Then log out, log back in and check the Trackpad preferences again.


Look at preferences for "Smooth scrolling"

  • preferences for what?
    – water
    Aug 31, 2011 at 18:53
  • @water Open System Preferences. Click on General. Enable "Use smooth scrolling."
    – user10355
    Aug 31, 2011 at 19:22
  • I don't see "General" under system preferences. I'm on snow leopard
    – water
    Sep 1, 2011 at 3:43
  • Snow Leopard doesn't support the "bounce". Were you using some other 3rd party plug-in?
    – kukoo
    Sep 1, 2011 at 6:34
  • ...nope. It was always there. There's no way snow leopard doesn't support smooth scrolling, since I distinctly remember saying "The only UI upgrade with any value in this upgrade is the scrolling"
    – water
    Sep 1, 2011 at 12:26

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