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[Damiön la Bagh <1377857@xxxxxxxxxxxxxxxxxx>]

I have now 3 IIyama touchscreens with eGalax touchpanels the:
2x IIyama T1931-SR-b  (5 wire resistive)
IIyama T1931-SAW-b (Acousic Wave)


The 1st screen (SR) worked out of the box and retained it's calibration but needed a startup script and udev rule

# xinput list  # to find the map-to-output value
# xrandr # to find the output plug name
xinput map-to-output 9 DVI-I-1

The 2nd screen (SR) worked orignally out of the box and after a week it
lost it's calibration and was impossible to get calibrated again. As you
touch closer to the top right corner the mouse moves more to the left of
your finger)

The 3rd screen (SAW) doesn't react to touch at all and I'm still
fighting with it to get it to work.

There needs to be a better way for evdev to save and store the
configuration for touchscreens. Especially for screens so well
documented like the eGalax touchscreens.

# Full documentation can be found on the website of eGalax
http://www.eeti.com.tw/

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https://bugs.launchpad.net/bugs/1377857

Title:
  touchscreen calibration not saved in ubuntu 14.04

Status in xserver-xorg-input-evdev package in Ubuntu:
  Confirmed

Bug description:
  I have a touchscreen IIYAMA and I'm using Ubuntu  14.04 LTS.
  I try to configure my touchscreen by Calibrate touchscreen. Later, I save new configuration in :

  /usr/share/X11/xorg.conf.d/99-calibration.conf

  I  show you one of multiples examples that i used

  Section "InputClass"
          Identifier      "calibration"
          MatchProduct    "Nexio Touch Device(HS) Nexio HID Multi-Touch ATI0420-06  Pen"
          Option  "Calibration"   "14533 4620 14533 4620"
          Option  "SwapAxes"      "1"

  EndSection

  I am trying multiples options: change SwapAxes values, change Calibration values..
  Finally  i restart xsever :

  restart lightdm

  Ubuntu not save any change.
  Thanks for all

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