Panasonic CF-18 / touchscreen / evdev / calibration issue

[Tias]

On Sat, Mar 13, 2010 at 09:02:10PM -0600, John R. wrote:
> Hello,
> 
> I am running kernel 2.6.33, xorg server 1.7.5 on a gentoo based
> Panasonic CF-18.  Kernel reports:
> 
> input: LBPS/2 Fujitsu Lifebook TouchScreen as
> /devices/platform/i8042/serio3/input/input6
> 
> X server reports:
> 
> (**) Touchscreen: doesn't report core events
> (**) Touchscreen: Device: "/dev/input/event6"
> (II) Touchscreen: Found absolute axes
> (II) Touchscreen: Found x and y absolute axes
> (II) Touchscreen: Found absolute touchscreen
> (II) Touchscreen: Configuring as touchscreen
> (**) Touchscreen: YAxisMapping: buttons 4 and 5
> (**) Touchscreen: EmulateWheelButton: 4, EmulateWheelInertia: 10,
> EmulateWheelTimeout: 200
> (II) XINPUT: Adding extended input device "Touchscreen" (type: TOUCHSCREEN)
> (**) Touchscreen: (accel) keeping acceleration scheme 1
> (**) Touchscreen: (accel) acceleration profile 0
> (II) Touchscreen: initialized for absolute axes.
> 
> xorg.conf contains:
> 
> Section "InputDevice"
>         Identifier "Touchscreen"
>         Driver "evdev"
>         Option "Device" "/dev/input/event6"
>         Option "DeviceName" "Touchscreen"
>         Option      "Calibration"           "64 602 -60 470"
>         #Option "ReportingMode" "Raw"
>         #Option "SwapY"
> EndSection
> 
> I can run xinput_calibrator_x11 v0.6.0.  This results in correct values
> in the output of 'xinput list-props "Touchscreen"':
> 
> Device 'Touchscreen':
>         Device Enabled (136):   1
>         Device Accel Profile (244):     0
>         Device Accel Constant Deceleration (245):       1.000000
>         Device Accel Adaptive Deceleration (247):       1.000000
>         Device Accel Velocity Scaling (248):    10.000000
>         Evdev Reopen Attempts (253):    10
>         Evdev Axis Inversion (254):     0, 0
>         Evdev Axis Calibration (255):   62, 519, -10, 434
>         Evdev Axes Swap (256):  0
>         Axis Labels (257):      "Abs X" (251), "Abs Y" (252)
>         Button Labels (258):    "Button Unknown" (250), "Button Unknown"
> (250), "Button Unknown" (250), "Button Wheel Up" (140), "Button Wheel
> Down" (141)
>         Evdev Middle Button Emulation (259):    2
>         Evdev Middle Button Timeout (260):      50
>         Evdev Wheel Emulation (261):    0
>         Evdev Wheel Emulation Axes (262):       0, 0, 4, 5
>         Evdev Wheel Emulation Inertia (263):    10
>         Evdev Wheel Emulation Timeout (264):    200
>         Evdev Wheel Emulation Button (265):     4
>         Evdev Drag Lock Buttons (266):  0
> 
> However, the clicks on the touchscreen do not result in cursor going to
> where the click occurs.  Also, if I rerun xinput_calibrator_x11 it
> results in new calibration values each time it is executed (values vary
> quite a bit...not just what one might expect from being slightly off
> when calibrating).
> 
> This touchscreen worked with evtouch.
> 
> Any ideas?

Not sure, perhaps your starting calibration gives you a false start,
leading to a wrong calibration ?

Try starting without any calibration set, or set it to smth safe like
xinput set-int-prop "Touchscreen" "Evdev Axis Calibration" 32 0 1000 0 1000


If that does not help, then we should figure out why you get different
calibration results with different runs.
Try running running the calibrator a few times starting with the same
base calibration values (eg 0 1000 0 1000) and check by adding the -v
flag what clicks are registered and what calibraton is calculated.

This will at least show if the problem is on the calibration part or
somewhere below : )


Kind regards,
Tias