Public bug reported:

Binary package hint: xserver-xorg-input-wacom

Hi,

I've a toshiba portege m700 which is a tablet-pc with touchscreen capability. 
The stylus and eraser work like a charm after adding some lines to xorg.conf as 
described in this tutorial:
https://help.ubuntu.com/community/WacomTroubleshooting

There is also a useful page about setting up everything on this laptop
too at: https://wiki.kubuntu.org/LaptopTestingTeam/ToshibaPortegeM700

The problem is the touchscreen. I added these lines to my xorg.conf

Section "InputDevice"
        Driver        "wacom"
        Identifier    "touch"
        Option        "Device"        "/dev/ttyS0"       # SERIAL ONLY
        Option        "Type"          "touch"
        Option        "ForceDevice"   "ISDV4"            # Serial Tablet PC ONLY
EndSection

And touchscreen worked but it does not recognize coordinates. I'll try
to explain how does it behaves:

It seems that the the whole screen is mapped in a little rectangle on
top left corner of the screen. if i put finger there i can use it but if
i exit out of this little rectangle the cursor goes out of the screen.
So it works, i mean, it receives commands, but they are mapped wrong.

To face this in hardy i used the patch attached and it was recognized
using the stylus/cursor xorg.conf lines (so no need for touchscreen
lines). I hope this patch can be added upstream to solve this issue.

** Affects: wacom-tools (Ubuntu)
     Importance: Undecided
         Status: New

-- 
xserver-xorg-input-wacom does not recognize touchscreen coordinates
https://bugs.launchpad.net/bugs/300980
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