Touchscreen calibration with evdev
Mike Crash
mike at mikecrash.com
Mon Jan 18 13:08:51 CET 2010
I have upgraded my Debian system on GTA02 and found, that the new udev is not
compatible with current kernel in Debian. So I have compiled andy kernel and
also upgraded the X.org server with new version. All works fine, but I have
found, that new X is not using tslib, it loads simply evdev for touchscreen:
(II) config/udev: Adding input device "s3c2410 TouchScreen"
(/dev/input/event1)
(**) "s3c2410 TouchScreen": always reports core events
(**) "s3c2410 TouchScreen": Device: "/dev/input/event1"
(II) "s3c2410 TouchScreen": Found absolute axes
(II) "s3c2410 TouchScreen": Found x and y absolute axes
(II) "s3c2410 TouchScreen": Found absolute touchscreen
(II) "s3c2410 TouchScreen": Configuring as touchscreen
(**) "s3c2410 TouchScreen": YAxisMapping: buttons 4 and 5
(**) "s3c2410 TouchScreen": EmulateWheelButton: 4, EmulateWheelInertia: 10,
EmulateWhee
(II) XINPUT: Adding extended input device ""s3c2410 TouchScreen"" (type:
TOUCHSCREEN)
(**) "s3c2410 TouchScreen": (accel) keeping acceleration scheme 1
(**) "s3c2410 TouchScreen": (accel) acceleration profile 0
(II) "s3c2410 TouchScreen": initialized for absolute axes.
But the calibration is gone and I don't know, how to calibrate it. At least
X and Y axis are reversed. I have tried this in xorg.conf, but it doesn't
help (it seems the section was not recognized):
Section "InputDevice"
Identifier "Configured Touchscreen"
Driver "evdev"
Option "Device" "/dev/input/event1"
Option "AbsoluteScreen" "0"
Option "XAbsoluteAxisMap" "1"
Option "YAbsoluteAxisMap" "0"
EndSection
Does anybody know, how to calibrate the screen?
Thank you
Mike
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