-- /usr/share/X11/xorg.conf.d/50-wacom.conf
++ /tmp/xorg.conf.d/50-wacom.conf
Section "InputClass"
Identifier "Wacom class"
MatchProduct "Wacom|WACOM|Hanwang|PTK-540WL"
MatchProduct "Wacom|WACOM|Hanwang|PTK-540WL|ISD-V4"
MatchDevicePath "/dev/input/event*"
Driver "wacom"
EndSection