evdev, hal, and calibrating my touchscreen

[Clarke Wixon]

Peter Hutterer <peter.hutterer <at> who-t.net> writes:

> 
> On Thu, Nov 13, 2008 at 11:56:09PM +0000, Clarke Wixon wrote:
> > Device 'Touchkit HID-USB Touchscreen':
> >     Device Enabled:        1
> >     Middle Button Emulation:        2
> >     Middle Button Timeout:        50
> >     Wheel Emulation Inertia:        10
> >     Wheel Emulation:        0
> >     Wheel Emulation X Axis:        0, 0
> >     Wheel Emulation Y Axis:        4, 5
> >     Wheel Emulation Timeout:        200
> >     Wheel Emulation Button:        4
> >     Drag Lock Buttons:    0
> 
> "Evdev Axis Calibration" should be the property, at least if you're running
> 2.0.99.3.

Thank you Peter.

I built and installed evdev from git yesterday -- so it should be entirely
up to date -- but I don't get that property.  In fact, all I get is this:

   $ xinput list-props "Touchkit HID-USB Touchscreen"

   Device 'Touchkit HID-USB Touchscreen':
       Device Enabled:        1

Only "Device Enabled."  Even though the calibration property doesn't exist,
I can SET it thusly:

   $ xinput set-int-prop "Touchkit HID-USB Touchscreen" \
   > "Evdev Axis Calibration" 32 80 3975 135 3935

And then I get:

   $ xinput list-props "Touchkit HID-USB Touchscreen"

   Device 'Touchkit HID-USB Touchscreen':
       Device Enabled:        1
       Evdev Axis Calibration:        80, 3975, 135, 3935

That looks right.  BUT there's no change in calibration, and "xinput list"
still shows 42..4029 for both axes.

Looking at Xorg.0.log shows that I definitely have evdev working here, and I
replaced my old module with the new one, so I don't think there's any chance I
have version issues.  (Heck, I read through the source before building to make
sure I had the runtime calibration patch, and it was there.)

Do I need to build and install some other updated X subsystem to get this to
work?  I only built evdev, and my distro default xserver-xorg-core package is at
version 1.5.2 (specifically, 2:1.5.2-2ubuntu3).