This section is based on the similar experience in Section . Both tablets are `auto-detected' as a mice in relative mode. I find absolute mode much better.
A big problem is that the `location' of the graphics tablet can change with each reboot, or when USB devices are pulled in and out. In particular the X (a number) in /dev/input/eventX changes. The solution can be found in the Stopped Clock Blog. In fact, there are two solutions found on that web-page. The first is to use the entries in /dev/input/by-id/. At the moment, if I use the command `ls -l /dev/input/by-id/'...
lrwxrwxrwx 1 [...] usb-Logitech_Optical_USB_Mouse-event-mouse -> ../event4
lrwxrwxrwx 1 [...] usb-Logitech_Optical_USB_Mouse-mouse -> ../mouse2
lrwxrwxrwx 1 [...] usb-Tablet_XD-0608-U-event-mouse -> ../event3
lrwxrwxrwx 1 [...] usb-Tablet_XD-0608-U-mouse -> ../mouse1
lrwxrwxrwx 1 [...] usb-WACOM_ET-0405A-UV2.0-3-event-mouse -> ../event2
lrwxrwxrwx 1 [...] usb-WACOM_ET-0405A-UV2.0-3-mouse -> ../mouse0