Hi all,
I installed the xserver-xorg-input-elographics package and it seems to
work. I can move the mouse by touching the display. However, some
calibration seems to be needed. Touching the display does not move the
mouse under my finger. I can just move the mouse pointer by dragging
over the display at an arbitrary location.
I tried to play with stuff like
Section "InputDevice"
Identifier "ELO touchscreen"
Driver "elographics"
Option "Device" "/dev/psaux"
Option "MinimumXPosition" "300"
Option "MaximumXPosition" "3700"
Option "MinimumYPosition" "300"
Option "MaximumYPosition" "3700"
Option "UntouchDelay" "10"
Option "ReportDelay" "10"
Option "SendCoreEvents" "yes"
EndSection
in /etc/X11/xorg.conf but these entries (existence or not) have no
effect on the behaviour of the touch screen. Where can this driver be
configured/calibrated and is it possible to have absolute coordinates,
meaning that the mouse pointer is braught the the position of my
finger
when touching the screen?
It is a blind shot, but in wacom driver, when it is not correctly
loaded, it
behaves like a mouse (i.e. no absolute positioning), which correlates
with
your story. Review your /var/log/Xorg.0.log for any problem loading
the
driver.
OK, I now have xserver-xorg-input-elographics installed and the
following entries in /etc/X11/xorg.conf.
Section "InputDevice"
Identifier "ELO touchscreen"
Driver "elographics"
Option "Device" "/dev/psaux"
Option "MinimumXPosition" "3000"
Option "MaximumXPosition" "3700"
Option "MinimumYPosition" "3000"
Option "MaximumYPosition" "3700"
Option "UntouchDelay" "10"
Option "ReportDelay" "10"
Option "SendCoreEvents" "yes"
Option "ScreenNumber" "0"
Option "ButtonNumber" "1"
EndSection
Section "ServerLayout"
...
InputDevice "Generic Keyboard"
InputDevice "Configured Mouse"
InputDevice "ELO touchscreen" "SendCoreEvents"
EndSection
After restarting X the touch still behaves like a mouse (no absolute
ositioning) and in /var/log/Xorg.0.log I get
debian:/usr/lib/xorg/modules/input# tail -f /var/log/Xorg.0.log
Elographics: Dropping one byte in an attempt to synchronize:
'Elographics: Dropping one byte in an attempt to synchronize: '' 0x18
Elographics: Dropping one byte in an attempt to synchronize: '╴' 0xFB
Elographics: Dropping one byte in an attempt to synchronize: '' 0x1
Elographics: Dropping one byte in an attempt to synchronize: '' 0x18
Elographics: Dropping one byte in an attempt to synchronize: '╴' 0xFC
Elographics: Dropping one byte in an attempt to synchronize: '' 0x2
Elographics: Dropping one byte in an attempt to synchronize: '' 0x18
Elographics: Dropping one byte in an attempt to synchronize: '╴' 0xFD
Elographics: Dropping one byte in an attempt to synchronize: '' 0x2
Unable to ask Elographics touchscreen identification
Any idea?
Thanks,
Andreas
