Intertial scrolling in older models?

Discussion in 'MacBook Pro' started by mikethebigo, Apr 26, 2010.

  1. mikethebigo macrumors 68000

    May 25, 2009
    I have the last-gen 13 inch MBP. I tried out the inertial scrolling today on the new models at the Apple store, and I have to say it's pretty sweet. I know it's totally a software thing and not a hardware limitation, so I was wondering if anyone had a hack or knew a way to transfer that ability to older models. Any info would be great, thanks!
  2. kjaxplicit24 macrumors regular

    Nov 18, 2009
    Pretty sure there's nothing as of yet. But you could download smartscroll.
  3. rgarjr macrumors 603


    Apr 2, 2009
    Southern California
    I am also waiting for the inertia scrolling option here.
  4. Tiki35 macrumors 6502

    Oct 25, 2009
    Nanoose Bay, BC, Canada
  5. Dayv macrumors 6502

    Aug 18, 2009
    Does anyone know for sure if the inertial scrolling on the new models relies on any actual new hardware built into them? It seems to me like this could easily be pushed out by Apple in a software update for at least the previous unibody generation.
  6. mikethebigo thread starter macrumors 68000

    May 25, 2009
    I honestly almost don't know how it could be a hardware issue. I feel like the only difference is how the OS handles the input. I'm not an Apple engineer though.
  7. todd2fst4u macrumors regular

    Jul 13, 2008
    this would seem fairly doable considering that it was possible to bring the trackpad preference pane from the late 2008 mbp to the early 2008 mbp to do 4 finger gestures.
    see here:

    i think someone with the inertia scrolling needs to upload their AppleUSBMultitouch.kext :confused: maybe?
  8. panzaman macrumors member

    Oct 20, 2008
    There you go:

    I am under the impression that the new MacBooks trackpad has a different ID from the Unibodies 2008/2009 models.

    This is how I think how it works, in the KEXT .plist you'll find different configuration values depending on the trackpad ID, the Kext will look at your macbook work out the trackpad ID and establish what behaviour to use, (inertial/no inertial). If somebody can work out the different trackpad IDs for all the different macbook models then would be very easy to go in the .plist file and swap numbers around in order to activate the feature on older models.

    Attached Files:

  9. saxman macrumors 6502

    May 13, 2004
    Given Apple's track record, I doubt they will enable it on older models even if the hardware supports it. I just retired a 12" powerbook that was hardware capable of supporting two-finger scrolling that Apple never enabled over it's close to 6-year lifespan (and two OS upgrades). I used a program called iScroll to enable it. I would guess smartscroll will be your best option

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