Calibration of touch screen not working? cant load `sudo DISPLAY=:0.0 xinput_calibrator`

vishal · May 7, 2021, 4:37pm

volumio@dark-horse-audio:~$ ls -al /usr/share/X11/xorg.conf.d
total 36
drwxr-xr-x 2 root root 4096 May 7 12:53 .
drwxr-xr-x 1 root root 4096 Apr 28 13:23 …
-rw-r–r-- 1 root root 1099 Sep 24 2016 10-evdev.conf
-rw-r–r-- 1 root root 1350 Nov 11 2016 10-quirks.conf
-rw-r–r-- 1 root root 788 Sep 30 2016 40-libinput.conf
-rw-r–r-- 1 root root 2747 Oct 28 2016 70-wacom.conf
-rw-r–r-- 1 root root 607 Dec 7 2016 99-fbturbo.conf

volumio@dark-horse-audio:~$ ls -al /usr/share/X11/xorg.conf.d
total 36
drwxr-xr-x 2 root root 4096 May 7 12:53 .
drwxr-xr-x 1 root root 4096 Apr 28 13:23 …
-rw-r–r-- 1 root root 1099 Sep 24 2016 10-evdev.conf
-rw-r–r-- 1 root root 1350 Nov 11 2016 10-quirks.conf
-rw-r–r-- 1 root root 788 Sep 30 2016 40-libinput.conf
-rw-r–r-- 1 root root 2747 Oct 28 2016 70-wacom.conf
-rw-r–r-- 1 root root 607 Dec 7 2016 99-fbturbo.conf
volumio@dark-horse-audio:~$ ls -al /etc/X11/xorg.conf.d
total 24
drwxr-xr-x 2 root root 4096 May 7 16:34 .
drwxr-xr-x 1 root root 4096 Apr 28 13:25 …
-rw-r–r-- 1 root root 316 May 7 16:34 95-touch_display-plugin.conf
-rw-r–r-- 1 root root 440 May 7 16:24 99-calibration.conf

volumio@dark-horse-audio:~$ cat /etc/X11/xorg.conf.d/99-calibration.conf
Section “InputClass”
Identifier “calibration”
MatchProduct “wch.cn USB2IIC_CTP_CONTROL”
Option “MinX” “8172”
Option “MaxX” “8195”
Option “MinY” “128430”
Option “MaxY” “128794”
Option “SwapXY” “1” # unless it was already set to 1
Option “InvertX” “0” # unless it was already set
Option “InvertY” “0” # unless it was already set

vishal · May 7, 2021, 4:38pm

yes the UI isnt shown on the screen, the screen is on but just showing the login lines.

gvolt · May 7, 2021, 4:39pm

“/etc/X11/xorg.conf.d/99-calibration.conf” is lacking

EndSection

vishal · May 7, 2021, 4:41pm

know idea what that means but guessing something gone wrong?

gvolt · May 7, 2021, 4:42pm

“/etc/X11/xorg.conf.d/99-calibration.conf” is incomplete. It should be

Section “InputClass”
Identifier “calibration”
MatchProduct “[wch.cn](http://wch.cn) USB2IIC_CTP_CONTROL”
Option “MinX” “8172”
Option “MaxX” “8195”
Option “MinY” “131161”
Option “MaxY” “131525”
Option “SwapXY” “1” # unless it was already set to 1
Option “InvertX” “0” # unless it was already set
Option “InvertY” “0” # unless it was already set
EndSection

but the last line

EndSection

is missing.

vishal · May 7, 2021, 4:48pm

confirmed gvolt ill do it again and report back. Thank you thus far.

vishal · May 7, 2021, 5:02pm

Arrghhhh now its not writing to the the file saying it doesnt exist. Have to leave this for tonight as got to put the little one to bed! I’ll follow this up tomorrow

vishal · May 7, 2021, 5:09pm

Volumio Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
permitted by applicable law.
volumio@dark-horse-audio:~$ cat /etc/X11/xorg.conf.d/99-calibration.conf
Section “InputClass”
Identifier “calibration”
MatchProduct “wch.cn USB2IIC_CTP_CONTROL”
Option “MinX” “8172”
Option “MaxX” “8195”
Option “MinY” “131161”
Option “MaxY” “131525”
Option “SwapXY” “1” # unless it was already set to 1
Option “InvertX” “0” # unless it was already set
Option “InvertY” “0” # unless it was already set
EndSection

volumio@dark-horse-audio:~$

ok did it again and still not showing UI on screen

gvolt · May 7, 2021, 5:14pm

Please post the output of

cat /var/log/Xorg.0.log

gvolt · May 7, 2021, 5:29pm

Maybe try this content for “/etc/X11/xorg.conf.d/99-calibration.conf”:

Section "InputClass"
        Identifier      "calibration"
        MatchProduct    "[wch.cn](http://wch.cn) USB2IIC_CTP_CONTROL"
        Option  "Calibration"   "8172 8195 131161 131525"
        Option  "SwapAxes"      "1"
EndSection

vishal · May 7, 2021, 5:30pm

volumio@dark-horse-audio:~$ cat /var/log/Xorg.0.log
[ 57.003]
X.Org X Server 1.18.4
Release Date: 2016-07-19
[ 57.003] X Protocol Version 11, Revision 0
[ 57.003] Build Operating System: Linux 4.4.26-v7+ armv7l Raspbian
[ 57.003] Current Operating System: Linux dark-horse-audio 4.19.118-v7l+ #1311 SMP Mon Apr 27 14:26:42 BST 2020 armv7l
[ 57.003] Kernel command line: coherent_pool=1M 8250.nr_uarts=0 cma=64M bcm2708_fb.fbwidth=1920 bcm2708_fb.fbheight=480 bcm2708_fb.fbswap=1 smsc95xx.macaddr=DC:A6:32:F5:45:33 vc_mem.mem_base=0x3ec00000 vc_mem.mem_size=0x40000000 splash quiet plymouth.ignore-serial-consoles dwc_otg.fiq_enable=1 dwc_otg.fiq_fsm_enable=1 dwc_otg.fiq_fsm_mask=0xF dwc_otg.nak_holdoff=1 console=ttyS0,115200 kgdboc=ttyS0,115200 console=tty1 imgpart=/dev/mmcblk0p2 imgfile=/volumio_current.sqsh elevator=noop rootwait bootdelay=5 logo.nologo vt.global_cursor_default=0 loglevel=0 snd-bcm2835.enable_compat_alsa=1 snd_bcm2835.enable_headphones=1
[ 57.004] Build Date: 11 November 2016 11:59:59AM
[ 57.004] xorg-server 2:1.18.4-2+rpi1 (Debian -- Support)
[ 57.004] Current version of pixman: 0.32.6
[ 57.004] Before reporting problems, check http://wiki.x.org
to make sure that you have the latest version.
[ 57.004] Markers: (–) probed, (**) from config file, (==) default setting,
(++) from command line, (!!) notice, (II) informational,
(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[ 57.005] (==) Log file: “/var/log/Xorg.0.log”, Time: Fri May 7 17:12:03 2021
[ 57.014] (==) Using config directory: “/etc/X11/xorg.conf.d”
[ 57.014] (==) Using system config directory “/usr/share/X11/xorg.conf.d”
[ 57.022] Parse error on line 1 of section InputClass in file /etc/X11/xorg.conf.d/99-calibration.conf
The Section keyword requires a quoted string to follow it.
[ 57.027] (EE) Problem parsing the config file
[ 57.027] (EE) Error parsing the config file
[ 57.027] (EE)
Fatal server error:
[ 57.027] (EE) no screens found(EE)
[ 57.027] (EE)
Please consult the The X.Org Foundation support
at http://wiki.x.org
for help.
[ 57.027] (EE) Please also check the log file at “/var/log/Xorg.0.log” for additional information.
[ 57.027] (EE)
[ 57.027] (EE) Server terminated with error (1). Closing log file.

gvolt · May 7, 2021, 5:36pm

Check all quotation marks in “/etc/X11/xorg.conf.d/99-calibration.conf”. I suggest to substitute them by manually retyping them. I guess copying the text from the forum changed the quotation marks in some way.

vishal · May 7, 2021, 6:26pm

yes you were correct the quotation marks were replaced with these > >.

manually retyped and the UI is back up and running!

Bad news the damn calibration didn’t work, it’s still the same.

Volumio Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
permitted by applicable law.
volumio@dark-horse-audio:~$ cat /etc/X11/xorg.conf.d/99-calibration.conf
Section “InputClass”
Identifier “calibration”
MatchProduct “wch.cn USB2IIC_CTP_CONTROL”
Option “MinX” “8172”
Option “MaxX” “8195”
Option “MinY” “131161”
Option “MaxY” “131525”
Option “SwapXY” “1” # unless it was already set to 1
Option “InvertX” “0” # unless it was already set
Option “InvertY” “0” # unless it was already set
EndSection
volumio@dark-horse-audio:~$

rechecked and its gone in fine?

vishal · May 7, 2021, 6:32pm

gvolt:

Maybe try this content for “/etc/X11/xorg.conf.d/99-calibration.conf”:

Section "InputClass"
        Identifier      "calibration"
        MatchProduct    "[wch.cn](http://wch.cn) USB2IIC_CTP_CONTROL"
        Option  "Calibration"   "8172 8195 131161 131525"
        Option  "SwapAxes"      "1"
EndSection

tried this to, the UI works just the calibration is all off, still does the same thing.

Wish it was just a little easier to do but these things never are i guess. At least i am learning a great deal!

gvolt · May 7, 2021, 6:32pm

I suggest to run “xinput_calibration” again. IMHO the current values look weird.

vishal · May 7, 2021, 6:36pm

volumio@dark-horse-audio:~$ DISPLAY=:0.0 xinput_calibrator
Calibrating standard Xorg driver “wch.cn USB2IIC_CTP_CONTROL”
current calibration values: min_x=0, max_x=65535 and min_y=0, max_y=65535
If these values are estimated wrong, either supply it manually with the --precalib option, or run the ‘get_precalib.sh’ script to automatically get it (through HAL).
→ 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 “wch.cn USB2IIC_CTP_CONTROL”
Option “MinX” “8109”
Option “MaxX” “8223”
Option “MinY” “127748”
Option “MaxY” “127020”
Option “SwapXY” “1” # unless it was already set to 1
Option “InvertX” “0” # unless it was already set
Option “InvertY” “0” # unless it was already set
EndSection
volumio@dark-horse-audio:~$

gvolt · May 7, 2021, 6:41pm

Hm, those values don’t look that different…

Maybe it could be an option to use a calibration file from the manufacturer of the display. This wouldn’t be ultra precise, but probably better than what you have now, Could you provide the name of the manufacturer and the exacr model name of the display?

vishal · May 7, 2021, 6:42pm

8.8 inch IPS 1920x480 60Hz 40 pins Multi touch LCD screen display with micro USB port controller board for Aida64 raspberry pi|Tablet LCDs & Panels| - AliExpress

vishal · May 7, 2021, 6:42pm

got it from ali express!

vishal · May 7, 2021, 6:43pm

also my cursor moves backwards still. So up and down is left and right, right and left is up and down!