Touch screen not working
18 Dec 2021 15:06 #229406
by Thom
Touch screen not working was created by Thom
I wanted to implement a Touchscreen to my Linux CNC milling machine:Therefore I use a Touchscreen, which is detected by Linux as “EloTouchSystems,Inc Elo TouchSystems 2216 AccuTouch® USB Touchmonitor Interface”
The touch is working as well, but the Y Axis of the Toch input is inverted
=>So I edited the config file /usr/share/X11/xorg.conf.d/40-libinput.conf and added the last section “calibration”
[/code]
Any ideas?
Best regards,
Thomas
The touch is working as well, but the Y Axis of the Toch input is inverted
=>So I edited the config file /usr/share/X11/xorg.conf.d/40-libinput.conf and added the last section “calibration”
[code]# Match on all types of devices but tablet devices and joysticks
Section "InputClass"
Identifier "libinput pointer catchall"
MatchIsPointer "on"
MatchDevicePath "/dev/input/event*"
Driver "libinput"
EndSection
Section "InputClass"
Identifier "libinput keyboard catchall"
MatchIsKeyboard "on"
MatchDevicePath "/dev/input/event*"
Driver "libinput"
EndSection
Section "InputClass"
Identifier "libinput touchpad catchall"
MatchIsTouchpad "on"
MatchDevicePath "/dev/input/event*"
Driver "libinput"
EndSection
Section "InputClass"
Identifier "libinput touchscreen catchall"
MatchIsTouchscreen "on"
MatchDevicePath "/dev/input/event*"
Driver "libinput"
EndSection
Section "InputClass"
Identifier "libinput tablet catchall"
MatchIsTablet "on"
MatchDevicePath "/dev/input/event*"
Driver "libinput"
EndSection
Section "InputClass"
Identifier "calibration"
MatchProduct "EloTouchSystems,Inc Elo TouchSystems 2216 AccuTouch® USB Touchmonitor Interface"
# MatchIsPointer "on"
MatchDevicePath "/dev/input/event*"
Driver "elographics"
Option "AlwaysCore"
Option "sreenNo" "1"
Option "MinX" "4446"
Option "MaxX" "59400"
Option "MinY" "5707"
Option "MaxY" "57844"
# Option "SwapXY" "0" # unless it was already set to 1
# Option "InvertX" "0" # unless it was already set
# Option "InvertY" "0" # unless it was already set
EndSectionBut now it is not working at all: in the log I have the following errors:
..
BUG: triggered 'if (dev->focus != ((void *)0))'
..
Unable to allocate Elographics touchscreen FocusClassDeviceStruct
..[ 23.732] (II) config/udev: Adding input device EloTouchSystems,Inc Elo TouchSystems 2216 AccuTouch® USB Touchmonitor Interface (/dev/input/event2)
[ 23.732] (**) EloTouchSystems,Inc Elo TouchSystems 2216 AccuTouch® USB Touchmonitor Interface: Applying InputClass "evdev pointer catchall"
[ 23.733] (**) EloTouchSystems,Inc Elo TouchSystems 2216 AccuTouch® USB Touchmonitor Interface: Applying InputClass "libinput pointer catchall"
[ 23.733] (**) EloTouchSystems,Inc Elo TouchSystems 2216 AccuTouch® USB Touchmonitor Interface: Applying InputClass "calibration"
[ 23.733] (II) LoadModule: "elographics"
[ 23.733] (II) Loading /usr/lib/xorg/modules/input/elographics_drv.so
[ 23.734] (II) Module elographics: vendor="X.Org Foundation"
[ 23.734] compiled for 1.19.0, module version = 1.4.1
[ 23.734] Module class: X.Org XInput Driver
[ 23.734] ABI class: X.Org XInput driver, version 24.1
[ 23.734] (II) Using input driver 'elographics' for 'EloTouchSystems,Inc Elo TouchSystems 2216 AccuTouch® USB Touchmonitor Interface'
[ 23.734] (**) Option "AlwaysCore"
[ 23.734] (**) EloTouchSystems,Inc Elo TouchSystems 2216 AccuTouch® USB Touchmonitor Interface: always reports core events
[ 23.734] (**) Option "Device" "/dev/input/event2"
[ 23.848] (**) Elographics associated screen: 0
[ 23.848] (**) Elographics untouch delay: 50 ms
[ 23.848] (**) Elographics report delay: 10 ms
[ 23.848] (**) Option "MaxX" "59400"
[ 23.848] (**) Elographics maximum x position: 59400
[ 23.848] (**) Option "MinX" "4446"
[ 23.848] (**) Elographics minimum x position: 4446
[ 23.848] (**) Option "MaxY" "57844"
[ 23.848] (**) Elographics maximum y position: 57844
[ 23.848] (**) Option "MinY" "5707"
[ 23.848] (**) Elographics minimum y position: 5707
[ 23.848] (**) Elographics device will work in Landscape mode
[ 23.848] (**) Option "config_info" "udev:/sys/devices/pci0000:00/0000:00:13.0/usb7/7-1/7-1:1.0/0003:04E7:0050.0003/input/input5/event2"
[ 23.848] (II) XINPUT: Adding extended input device "EloTouchSystems,Inc Elo TouchSystems 2216 AccuTouch® USB Touchmonitor Interface" (type: TOUCHSCREEN, id 10)
[ 23.848] (EE) BUG: triggered 'if (dev->focus != ((void *)0))'
[ 23.848] (EE) BUG: ../../../../dix/devices.c:1434 in InitFocusClassDeviceStruct()
[ 23.849] (EE)
[ 23.849] (EE) Backtrace:
[ 23.849] (EE) 0: /usr/lib/xorg/Xorg (xorg_backtrace+0x4a) [0x5587584e13aa]
[ 23.849] (EE) 1: /usr/lib/xorg/Xorg (InitFocusClassDeviceStruct+0x50) [0x558758373b20]
[ 23.849] (EE) 2: /usr/lib/xorg/modules/input/elographics_drv.so (0x7f42534f0000+0x2199) [0x7f42534f2199]
[ 23.849] (EE) 3: /usr/lib/xorg/Xorg (ActivateDevice+0x4f) [0x55875837329f]
[ 23.849] (EE) 4: /usr/lib/xorg/Xorg (0x558758328000+0xa6121) [0x5587583ce121]
[ 23.849] (EE) 5: /usr/lib/xorg/Xorg (0x558758328000+0xb882b) [0x5587583e082b]
[ 23.850] (EE) 6: /usr/lib/xorg/Xorg (0x558758328000+0xb8e73) [0x5587583e0e73]
[ 23.850] (EE) 7: /usr/lib/xorg/Xorg (config_init+0x9) [0x5587583df859]
[ 23.850] (EE) 8: /usr/lib/xorg/Xorg (InitInput+0xc7) [0x5587583c2db7]
[ 23.850] (EE) 9: /usr/lib/xorg/Xorg (0x558758328000+0x5a8d1) [0x5587583828d1]
[ 23.850] (EE) 10: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xf1) [0x7f425f7a82e1]
[ 23.850] (EE) 11: /usr/lib/xorg/Xorg (_start+0x2a) [0x55875836c5aa]
[ 23.850] (EE)
[ 23.850] Unable to allocate Elographics touchscreen FocusClassDeviceStruct
[ 23.850] (**) EloTouchSystems,Inc Elo TouchSystems 2216 AccuTouch® USB Touchmonitor Interface: (accel) keeping acceleration scheme 1
[ 23.850] (**) EloTouchSystems,Inc Elo TouchSystems 2216 AccuTouch® USB Touchmonitor Interface: (accel) acceleration profile 0
[ 23.850] (**) EloTouchSystems,Inc Elo TouchSystems 2216 AccuTouch® USB Touchmonitor Interface: (accel) acceleration factor: 2.000
[ 23.850] (**) EloTouchSystems,Inc Elo TouchSystems 2216 AccuTouch® USB Touchmonitor Interface: (accel) acceleration threshold: 4
[ 23.909] Not at the specified rate or model 2310, will continue
[ 23.910] (II) config/udev: Adding input device EloTouchSystems,Inc Elo TouchSystems 2216 AccuTouch® USB Touchmonitor Interface (/dev/input/js0)
[ 23.910] (II) No input driver specified, ignoring this device.
[ 23.910] (II) This device may have been added with another device file.
[ 23.912] (II) config/udev: Adding input device EloTouchSystems,Inc Elo TouchSystems 2216 AccuTouch® USB Touchmonitor Interface (/dev/input/mouse1)
[ 23.912] (II) No input driver specified, ignoring this device.
[ 23.912] (II) This device may have been added with another device file.
[ 23.912] (II) config/udev: Adding input device PC Speaker (/dev/input/event5)Any ideas?
Best regards,
Thomas
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18 Dec 2021 17:05 #229413
by Aciera
Replied by Aciera on topic Touch screen not working
Yes, I've had the same issue with an ELO touchscreen a while ago.
Solution for me was to set the transformation matrix.
First find the device name of your touch screen:
Look for the touch device name in the Virtual core pointer section and copy/paste that somewhere as you will need this later. In my case the device name was "EloTouchSystems,Inc Elo TouchSystems 2216 AccuTouch® USB Touchmonitor Interface".
Now you will need to find the settings for the transformation matrix:
The screen is calibrated using a Coordinate Transformation Matrix, which defaults to the identity matrix.
[1 0 0]
[0 1 0]
[0 0 1]
for convenient entry, the matrix is flatted into a single line like this
1 0 0 0 1 0 0 0 1
were the values seem to map like this
[hscale] [vskew] [hoffset] [hskew] [vscale] [voffset] 0 0 1
To test calibration use this in terminal:
The above should flip your touch vertically. I also had to scale the touch entry on my device.
Now to set this permanently (after login):
Create file: ~/.xsessionrc
Content of my file:
# added to get the ELO touchscreen to flip the touch in Y
xinput set-prop "EloTouchSystems,Inc Elo TouchSystems 2216 AccuTouch® USB Touchmonitor Interface" "Coordinate Transformation Matrix" 1.205 0 -0.07 0 -1.27 1.11 0 0 1
Note that I these are my values (with scaling) so use your device name and transformation values instead
Solution for me was to set the transformation matrix.
First find the device name of your touch screen:
$ xinput listLook for the touch device name in the Virtual core pointer section and copy/paste that somewhere as you will need this later. In my case the device name was "EloTouchSystems,Inc Elo TouchSystems 2216 AccuTouch® USB Touchmonitor Interface".
Now you will need to find the settings for the transformation matrix:
The screen is calibrated using a Coordinate Transformation Matrix, which defaults to the identity matrix.
[1 0 0]
[0 1 0]
[0 0 1]
for convenient entry, the matrix is flatted into a single line like this
1 0 0 0 1 0 0 0 1
were the values seem to map like this
[hscale] [vskew] [hoffset] [hskew] [vscale] [voffset] 0 0 1
To test calibration use this in terminal:
DISPLAY=:0.0 xinput set-prop "Coordinate Transformation Matrix" 1 0 0 0 -1 1 0 0 1The above should flip your touch vertically. I also had to scale the touch entry on my device.
Now to set this permanently (after login):
Create file: ~/.xsessionrc
Content of my file:
# added to get the ELO touchscreen to flip the touch in Y
xinput set-prop "EloTouchSystems,Inc Elo TouchSystems 2216 AccuTouch® USB Touchmonitor Interface" "Coordinate Transformation Matrix" 1.205 0 -0.07 0 -1.27 1.11 0 0 1
Note that I these are my values (with scaling) so use your device name and transformation values instead
The following user(s) said Thank You: Thom
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18 Dec 2021 22:03 #229437
by ALittleOffTheRails
Replied by ALittleOffTheRails on topic Touch screen not working
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19 Dec 2021 11:31 #229483
by Thom
Replied by Thom on topic Touch screen not working
This was exactly the solution!Thank you very much!
Just for Information:Was not working for me, I usedThe “10” is the device ID (figured out by $ xinput list)
Just for Information:
$ DISPLAY=:0.0 xinput set-prop "Coordinate Transformation Matrix" 1 0 0 0 -1 1 0 0 1$ xinput set-prop 10 "Coordinate Transformation Matrix" 1 0 0 0 -1 1 0 0 1Please Log in or Create an account to join the conversation.
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