The last step is to add some lines into /etc/X11/XF86Config, as per LinuxWacom instructions...
Driver "wacom"
Identifier "cursor"
Option "Device" "/dev/input/event3" # USB ONLY
Option "Type" "cursor"
Option "USB" "on" # USB ONLY
EndSection
Section "InputDevice"
Driver "wacom"
Identifier "stylus"
Option "Device" "/dev/input/event3" # USB ONLY
Option "Type" "stylus"
Option "USB" "on" # USB ONLY
EndSection
Section "InputDevice"
Driver "wacom"
Identifier "eraser"
Option "Device" "/dev/input/event3" # USB ONLY
Option "Type" "eraser"
Option "USB" "on" # USB ONLY
EndSection
InputDevice "stylus" "SendCoreEvents"
InputDevice "eraser" "SendCoreEvents"
It is better to run SaX2 (as the root superuser) and choose to add the Wacom Graphire2 (USB) as an input device. Remember to set the `port' to `/dev/input/event3'. Unfortunately, SaX2 chooses wrong `BottomX' and `BottomY' values for my Graphire2, resulting in the graphics tablet only being able to access part of the screen. One way to fix this problem might be find the proper BottomX and BottomY values (these values are reported by wacdump, for example). An even easier way is to tell SaX2 not to use the BottomX and BottomY values at all, by `unselecting' these options for the cursor/stylus and eraser.