the same time on a Lombard laptop.
 
 The key is gpm; it can handle multiple mice, and the XF86Config can be set
 to read it's output.
 
 Here is my pointer entry from XF86Config:
 
  Protocol  "MouseSystems"
  Device    "/dev/gpmdata"
 
 And here is the command line for gpm, started before I launched X:
 
 gpm -m /dev/adbmouse -t bm -M -m /dev/usbmouse -t ps2
 
 The -m's indicate the device to use, the -t indicates the mouse type
 (bm=busmouse, for the trackpad; ps2 for the Logitech Wingman USB mouse, why,
 I don't know), and the -M indicates multiple mice.