MS Optical Trackball (UBS)

[Bevan C. Bennett]

David Cary Hart wrote:
> The three primary buttons work. Does anyone know the incantation
> required to get the scroll to work?

The first thing to try is running 'mouseconfig' from a root terminal and 
seeing if they have a listing for your trackball (or a similar one) there.

Phase 2 usually it involves having the correct Protocol set in 
/etc/X11/XF86Config as well as the following line:
Option      "ZAxisMapping" "4 5"

I don't know about the trackball, but all the scroll mice I've tested 
work with:
Option      "Protocol" "IMPS/2"

So you might want to try that.