Simple Hack for Two-Finger Scrolling on Older PowerBooks and iBooks

The new PowerBook G4s have a new trackpad and software that permit it to scroll using two fingers. The trackpad on our new 1.67GHz 17" PowerBook G4 works very well with two-finger scrolling, up-down and left-right.

Daniel Becker posted a hack that activates two-finger scrolling on supported pre-2005 PowerBooks and iBooks (i.e. those with a "W-Enhanced" trackpad, including most aluminum PowerBooks and recent iBooks) on OS X 10.3. He says he has tested it with both Mac OS X 10.3.7 and the just-released 10.3.8. According to the author, the hack is based on Apple's AppleADBMouse-209.0.10 driver from Mac OS X 10.3.7 that is available as part of the publicly released Darwin source code.

We temporarily loaded the modified driver on our "older" 1.5GHz 17" PowerBook G4 running Mac OS X 10.3.8 and two-finger scrolling worked fine. [Bill Fox]