{{tag>Brouillon Matériel Xorg}}

= Notes écran tactile touch screen

Voir :
* [[Notes Systemd udev]]
* https://wiki.archlinux.org/index.php/touchscreen
* https://wiki.ubuntu.com/Touchscreen
* https://wiki.ubuntu.com/X/InputCoordinateTransformation

Pb écran tactile

<code bash>
apt-get install xinput-calibrator xinput
</code>

<code bash>
export DISPLAY=:0

ID=$(xinput list --id-only "eGalax Inc. USB TouchController")

SCREEN=$(xrandr 2>&1|grep -e ' connected primary' | awk '{print $1}')

#xinput --map-to-output 11 DVI-D-0
xinput --map-to-output $ID $SCREEN
</code>

<code bash>
xinput list-props "eGalax Inc. USB TouchController" |grep -e "Coordinate Transformation Matrix"
</code>
<code ->
        Coordinate Transformation Matrix (155): 0.000000, 0.375000, 0.000000, -1.000000, 0.000000, 1.000000, 0.000000, 0.000000, 1.000000
</code>

<code bash>
xinput_calibrator -v --device "eGalax Inc. USB TouchController"
</code>

https://askubuntu.com/questions/41385/cannot-calibrate-touchscreen


== Persistance

''/usr/local/bin/touchscreencfg.sh''
<code bash>
#! /bin/bash

export DISPLAY=:0

NAME=$(xinput list  --name-only |grep -i -e touch | grep -iv -e ' pen')
ID=$(xinput list --id-only "$NAME")
SCREEN=$(xrandr 2>&1 |grep -e ' connected primary' |awk '{print $1}')
/usr/bin/xinput --map-to-output $ID $SCREEN
( sleep 5 ; /usr/bin/xinput --map-to-output $ID $SCREEN ) &

</code>

<code bash>
chmod +x /usr/local/bin/touchscreencfg.sh
</code>

''~/.xsessionrc''
<code bash>
/usr/local/bin/touchscreencfg.sh
</code>


== Pb

=== Pb persistance sur débranchement ou extinction de l'écran

Voir [[Notes Systemd udev]]

--------------------------------

== Notes en vrac - pb débranchement retranchement extinction écran - perte orientation touchscreen

Voir :
* https://learn.adafruit.com/adafruit-pitft-28-inch-resistive-touchscreen-display-raspberry-pi/touchscreen-install-and-calibrate


<code ->
68.624] (II) NVIDIA(0): Setting mode "DVI-D-0: nvidia-auto-select @768x1024 +0+0 {ViewPortIn=768x1024, ViewPortOut=1024x768+0+0, Rotation=270}"
</code>

<code bash>
modprobe evdev
modprobe usbtouchscreen usbhid

cat /proc/bus/input/devices

echo Y >  /sys/module/usbtouchscreen/parameters/swap_xy
</code>


Enable the Touchscreen in Lightdm (the login screen)
    copy ~/.config/monitors.xml to /var/lib/lightdm/.config
	

<code bash>
xinput_calibrator --device "Elo Touch Solutions Elo Touch Solutions Pcap USB Interface"  --output-type xorg.conf.d --no-timeout
</code>

<code ->
Calibrating EVDEV driver for "Elo Touch Solutions Elo Touch Solutions Pcap USB Interface" id=8
        current calibration values (from XInput): min_x=0, max_x=4095 and min_y=0, max_y=4095

Doing dynamic recalibration:
        Setting calibration data: 1, 4064, -19, 4082
        --> Making the calibration permanent <--
  copy the snippet below into '/etc/X11/xorg.conf.d/99-calibration.conf' (/usr/share/X11/xorg.conf.d/ in some distro's)
Section "InputClass"
        Identifier      "calibration"
        MatchProduct    "Elo Touch Solutions Elo Touch Solutions Pcap USB Interface"
        Option  "Calibration"   "1 4064 -19 4082"
        Option  "SwapAxes"      "0"
EndSection
</code>


''/etc/X11/xorg.conf.d/99-calibration.conf''
<code ->
Section "InputClass"
        Identifier      "calibration"
        MatchProduct    "Elo Touch Solutions Elo Touch Solutions Pcap USB Interface"
        Option  "Calibration"   "44 4061 4081 -44"
        Option  "SwapAxes"      "1"
        Option "InvertX"        "0"
        Option "InvertY"        "0"
EndSection
</code>




=== Matrix 

https://gist.github.com/mildmojo/48e9025070a2ba40795c#file-rotate_desktop-sh-L41

https://github.com/swkim01/waveshare-dtoverlays


<code ->
xinput list-props "Elo Touch Solutions Elo Touch Solutions Pcap USB Interface" |grep Matrix
        Coordinate Transformation Matrix (155): 1.000000, 0.000000, 0.000000, 0.000000, 1.000000, 0.000000, 0.000000, 0.000000, 1.000000
</code>

<code ->	
Option "TransformationMatrix" "1 0 0 0 1 0 0 0 1"
</code>


=== Troubleshooting

<code bash>
sudo apt-get install -y evtest
</code>


== Notes


https://askubuntu.com/questions/253395/touchscreen-calibration-with-dual-monitors-nvidia-and-xinput

https://wiki.archlinux.org/index.php/Calibrating_Touchscreen

Do it automatically via a udev rule

Create a file something like ''/etc/udev/rules.d/99-acer-touch.rules'' with contents like this:

<code ->
ENV{ID_VENDOR_ID}=="2149",ENV{ID_MODEL_ID}=="2703",ENV{WL_OUTPUT}="DVI1",ENV{LIBINPUT_CALIBRATION_MATRIX}="1 0 0  0 1 0"
</code>

LXQt

''~/.config/autostart/lxqt-config-touchpad-autostart.desktop''
<code ini>
[Desktop Entry]
Comment=Autostart touchpad settings for lxqt-config-input
Exec=lxqt-config-input --load-touchpad
Name=lxqt-config-touchpad-autostart
OnlyShowIn=LXQt
Type=Application
Version=1.0
</code>