Wacom

https://wiki.ubuntu.com/LaptopTestingTeam/FujitsuT4010D

You first need to install the setserial utility which allows us to configure serial ports:

apt-get install setserial

Now we need to enter the /dev/ttyS0 (COM0) settings in /etc/serial.conf. Add this to the file:

/dev/ttyS0 port 0x220 irq 4 autoconfig

To apply the settings immediately, execute this command:

sudo /etc/init.d/setserial reload

Xorg Configuration

Add the following lines to /etc/X11/xorg.conf:

Section "Module"
...
      Load    "wacom"                 # add this line
EndSection
...
...
...
# These lines should go after the detected mouse and touchpad
Section "InputDevice"
        Driver          "wacom"
        Identifier      "cursor"
        Option          "Device"        "/dev/ttyS0"
        Option          "ForceDevice"   "ISDV4"
        Option          "Type"          "cursor"
        Option          "Mode"          "absolute"
        Option          "Speed"         "3.0"
        Option          "Threshold"     "2"
#       Option          "DebugLevel"    "10"
#       Option          "MaxX"          "24576"
#       Option          "MaxY"          "18432"
EndSection
Section "InputDevice"
        Driver          "wacom"
        Identifier      "stylus"
        Option          "Device"        "/dev/ttyS0"
        Option          "Type"          "stylus"
        Option          "Mode"          "absolute"
#       Option          "Tilt"          "on"
#       Option          "TiltInvert"    "on"
        Option          "Threshold"     "2"
#       Option          "DebugLevel"    "10"
EndSection
Section "InputDevice"
        Driver          "wacom"
        Identifier      "eraser"
        Option          "Device"        "/dev/ttyS0"
        Option          "Type"          "eraser"
        Option          "Mode"          "absolute"
#       Option          "Tilt"          "on"
#       Option          "TiltInvert"    "on"
        Option          "Threshold"     "2"
#       Option          "DebugLevel"    "10"
EndSection

Section "ServerLayout"
...
        # TabletPC Pen Device
        InputDevice     "cursor"        "SendCoreEvents"
        InputDevice     "stylus"        "SendCoreEvents"
        InputDevice     "eraser"        "SendCoreEvents"
EndSection

Upon restarting X (sudo /etc/init.d/gdm restart), the tablet pc pen should work :)