[Help] Volumio With Tingbot 3.2" Screen

Quietimpact · July 6, 2021, 10:28pm

Hi All

I am trying to reuse a screen from an old RPi kit that I kickstartered back in the day when that was cool. But I can’t get it to work at all. All I get is the screen being white. Volumio still works through the web interface though.

The screen is 3.2" 320x240 pixel screen. The only markings on it are:

The name of the Rpi kit (Tingbot)
3231-SZ on the side of the LCD
There is an XPT2046 chip
There is an Xilinx XC9572XL chip

So what I’ve done so far, starting from a brand new image of 2.882:

Install the Touch Screen plugin for volumio.
From the screen using information in the tingbot FAQ - attempted to follow these instructions - this included:

Enabling and disabling some services as said in the link
Copying the driver over using filezilla into boot/overlays/
Adding dtparam=spi=on and dtoverlay=tingbot:xohms=80 to the /boot/config.txt
Adding fbcon=map:10 to /boot/cmdline.txt

At this point I’ve rebooted, and the screen stays white.

Any help would be appreciated - I’d rather not throw out what I think is a perfectly working screen.

Volumio Information

Volumio Version: 2.882
Hardware: Raspberry Pi 2
DAC: Generic ES9023

gvolt · July 7, 2021, 9:20am

The Pi2 could be a little underpowered to be used in kiosk mode, i.e. with the Touch Display plugin. So maybe you just have to wait longer ; )

In the meantime please connect to Volumio via SSH and post the output of

cat /var/log/Xorg.0.log
and
chromium-browser -version

Quietimpact · July 7, 2021, 6:26pm

Thanks for getting back to me. Even if the RPi2 is underpowered, it should still run the screen, just badly right?

If it does end up being underpowered, I can try a Rpi3 that I have currently running my 3D Printer.

The results of cat /var/log/Xorg.0.log

[    65.302]
X.Org X Server 1.18.4
Release Date: 2016-07-19
[    65.303] X Protocol Version 11, Revision 0
[    65.303] Build Operating System: Linux 4.4.26-v7+ armv7l Raspbian
[    65.303] Current Operating System: Linux volumio 4.19.118-v7+ #1311 SMP Mon Apr 27 14:21:24 BST 2020 armv7l
[    65.303] Kernel command line: coherent_pool=1M bcm2708_fb.fbwidth=640 bcm2708_fb.fbheight=480 bcm2708_fb.fbswap=1 vc_mem.mem_base=0x3ec00000 vc_mem.mem_size                                                                                     =0x40000000  splash quiet plymouth.ignore-serial-consoles dwc_otg.fiq_enable=1 d                                                                                     wc_otg.fiq_fsm_enable=1 dwc_otg.fiq_fsm_mask=0xF dwc_otg.nak_holdoff=1 console=t                                                                                     tyAMA0,115200 kgdboc=ttyAMA0,115200 console=ttyl imgpart=/dev/mmcblk0p2 imgfile=                                                                                     /volumio_current.sqsh elevator=noop rootwait bootdelay=5 logo.nologo vt.global_c                                                                                     ursor_default=0 loglevel=0 snd-bcm2835.enable_compat_alsa=1 snd_bcm2835.enable_h                                                                                     eadphones=1 fbcon=map:10
[    65.303] Build Date: 11 November 2016  11:59:59AM
[    65.303] xorg-server 2:1.18.4-2+rpi1 (https://www.debian.org/support)
[    65.303] Current version of pixman: 0.32.6
[    65.303]    Before reporting problems, check http://wiki.x.org
        to make sure that you have the latest version.
[    65.303] Markers: (--) probed, (**) from config file, (==) default setting,
        (++) from command line, (!!) notice, (II) informational,
        (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[    65.304] (==) Log file: "/var/log/Xorg.0.log", Time: Wed Jul  7 18:21:18 2021
[    65.318] (==) Using config directory: "/etc/X11/xorg.conf.d"
[    65.318] (==) Using system config directory "/usr/share/X11/xorg.conf.d"
[    65.329] (==) No Layout section.  Using the first Screen section.
[    65.331] (==) No screen section available. Using defaults.
[    65.331] (**) |-->Screen "Default Screen Section" (0)
[    65.331] (**) |   |-->Monitor "<default monitor>"
[    65.339] (==) No device specified for screen "Default Screen Section".
        Using the first device section listed.
[    65.339] (**) |   |-->Device "Allwinner A10/A13 FBDEV"
[    65.339] (==) No monitor specified for screen "Default Screen Section".
        Using a default monitor configuration.
[    65.339] (==) Automatically adding devices
[    65.339] (==) Automatically enabling devices
[    65.339] (==) Automatically adding GPU devices
[    65.347] (==) Max clients allowed: 256, resource mask: 0x1fffff
[    65.359] (WW) The directory "/usr/share/fonts/X11/cyrillic" does not exist.
[    65.360]    Entry deleted from font path.
[    65.370] (==) FontPath set to:
        /usr/share/fonts/X11/misc,
        /usr/share/fonts/X11/100dpi/:unscaled,
        /usr/share/fonts/X11/75dpi/:unscaled,
        /usr/share/fonts/X11/Type1,
        /usr/share/fonts/X11/100dpi,
        /usr/share/fonts/X11/75dpi,
        built-ins
[    65.370] (==) ModulePath set to "/usr/lib/xorg/modules"
[    65.370] (II) The server relies on udev to provide the list of input devices.
        If no devices become available, reconfigure udev or disable AutoAddDevices.
[    65.370] (II) Loader magic: 0x5f8f20
[    65.370] (II) Module ABI versions:
[    65.370]    X.Org ANSI C Emulation: 0.4
[    65.370]    X.Org Video Driver: 20.0
[    65.370]    X.Org XInput driver : 22.1
[    65.370]    X.Org Server Extension : 9.0
[    65.374] (--) using VT number 2

[    65.375] (II) systemd-logind: logind integration requires -keeptty and -keeptty was not provided, disabling logind integration
[    65.375] (II) no primary bus or device found
[    65.377] (II) LoadModule: "glx"
[    65.383] (II) Loading /usr/lib/xorg/modules/extensions/libglx.so
[    65.483] (II) Module glx: vendor="X.Org Foundation"
[    65.483]    compiled for 1.18.4, module version = 1.0.0
[    65.484]    ABI class: X.Org Server Extension, version 9.0
[    65.484] (==) AIGLX enabled
[    65.484] (II) LoadModule: "fbturbo"
[    65.487] (II) Loading /usr/lib/xorg/modules/drivers/fbturbo_drv.so
[    65.496] (II) Module fbturbo: vendor="X.Org Foundation"
[    65.496]    compiled for 1.18.4, module version = 0.5.1
[    65.496]    Module class: X.Org Video Driver
[    65.496]    ABI class: X.Org Video Driver, version 20.0
[    65.496] (II) FBTURBO: driver for framebuffer: fbturbo
[    65.502] (WW) Falling back to old probe method for fbturbo
[    65.502] (II) Loading sub module "fbdevhw"
[    65.502] (II) LoadModule: "fbdevhw"
[    65.502] (II) Loading /usr/lib/xorg/modules/libfbdevhw.so
[    65.507] (II) Module fbdevhw: vendor="X.Org Foundation"
[    65.507]    compiled for 1.18.4, module version = 0.0.2
[    65.507]    ABI class: X.Org Video Driver, version 20.0
[    65.508] (II) FBTURBO(0): using /dev/fb0
[    65.508] (WW) VGA arbiter: cannot open kernel arbiter, no multi-card support
[    65.508] (II) FBTURBO(0): Creating default Display subsection in Screen section
        "Default Screen Section" for depth/fbbpp 24/32
[    65.508] (==) FBTURBO(0): Depth 24, (==) framebuffer bpp 32
[    65.508] (==) FBTURBO(0): RGB weight 888
[    65.508] (==) FBTURBO(0): Default visual is TrueColor
[    65.508] (==) FBTURBO(0): Using gamma correction (1.0, 1.0, 1.0)
[    65.508] (II) FBTURBO(0): hardware: BCM2708 FB (video memory: 1200kB)
[    65.508] (**) FBTURBO(0): Option "fbdev" "/dev/fb0"
[    65.508] (**) FBTURBO(0): Option "SwapbuffersWait" "true"
[    65.509] (II) FBTURBO(0): processor: ARM Cortex-A7
[    65.509] (II) FBTURBO(0): checking modes against framebuffer device...
[    65.509] (II) FBTURBO(0): checking modes against monitor...
[    65.509] (--) FBTURBO(0): Virtual size is 640x480 (pitch 640)
[    65.509] (**) FBTURBO(0):  Built-in mode "current"
[    65.509] (==) FBTURBO(0): DPI set to (96, 96)
[    65.509] (II) Loading sub module "fb"
[    65.509] (II) LoadModule: "fb"
[    65.513] (II) Loading /usr/lib/xorg/modules/libfb.so
[    65.523] (II) Module fb: vendor="X.Org Foundation"
[    65.523]    compiled for 1.18.4, module version = 1.0.0
[    65.523]    ABI class: X.Org ANSI C Emulation, version 0.4
[    65.523] (==) Depth 24 pixmap format is 32 bpp
[    65.548] (II) FBTURBO(0): using backing store heuristics
[    65.560] (II) FBTURBO(0): can't load 'g2d_23' kernel module
[    65.560] (II) FBTURBO(0): failed to enable the use of sunxi display controller
[    65.560] (II) FBTURBO(0): No sunxi-g2d hardware detected (check /dev/disp and /dev/g2d)
[    65.560] (II) FBTURBO(0): G2D hardware acceleration can't be enabled
[    65.560] (II) FBTURBO(0): enabled fbdev copyarea acceleration
[    65.560] (==) FBTURBO(0): Backing store enabled
[    65.572] (==) FBTURBO(0): DPMS enabled
[    65.572] (II) FBTURBO(0): failed to enable hardware cursor
[    65.572] (II) FBTURBO(0): no 3D acceleration because the driver has been compiled without libUMP
[    65.572] (II) FBTURBO(0): if this is wrong and needs to be fixed, please check ./configure log
[    65.575] (==) RandR enabled
[    65.628] (II) SELinux: Disabled on system
[    65.639] (II) AIGLX: Screen 0 is not DRI2 capable
[    65.639] (EE) AIGLX: reverting to software rendering
[    67.798] (II) AIGLX: enabled GLX_MESA_copy_sub_buffer
[    67.813] (II) AIGLX: Loaded and initialized swrast
[    67.813] (II) GLX: Initialized DRISWRAST GL provider for screen 0

The results of chromium-browser -version

/usr/bin/chromium-browser: line 138: lsb_release: command not found
/usr/bin/chromium-browser: line 139: lsb_release: command not found
Chromium 56.0.2924.84 Built on Ubuntu 14.04, running on

gvolt · July 7, 2021, 6:34pm

Thanks for the log. Additionally please post the results of

ls /dev/fb*
and
systemctl status -l volumio-kiosk.service

Quietimpact · July 7, 2021, 6:50pm

And the results of those two are:

/dev/fb0

And

● volumio-kiosk.service - Volumio Kiosk
   Loaded: loaded (/lib/systemd/system/volumio-kiosk.service; disabled)
   Active: active (running) since Wed 2021-07-07 18:48:08 UTC; 50s ago
 Main PID: 1277 (startx)
   CGroup: /system.slice/volumio-kiosk.service
           ├─1277 /bin/sh /usr/bin/startx /etc/X11/Xsession /opt/volumiokiosk.sh -- -nocursor
           ├─1304 xinit /etc/X11/Xsession /opt/volumiokiosk.sh -- /usr/bin/X :0 -nocursor -auth /tmp/serverauth.0Aw2g4pzUb
           ├─1305 /usr/lib/xorg/Xorg :0 -nocursor -auth /tmp/serverauth.0Aw2g4pzUb
           ├─1375 /bin/bash /opt/volumiokiosk.sh
           ├─1392 /usr/bin/ssh-agent /opt/volumiokiosk.sh
           ├─1398 /usr/bin/openbox --startup /usr/lib/arm-linux-gnueabihf/openbox-autostart OPENBOX
           ├─1399 /usr/lib/chromium-browser/chromium-browser --enable-pinch --ppapi-flash-path=/usr/lib/chromium-browser/libpepflashplayer.so --ppapi-flash-args=enable_stagevideo_auto=0 --simulate-outdated-no-au=Tue, 31 Dec 2099 23:59:59 GMT --force-device-scale-factor=1 --disable-pinch --kiosk --no-first-run --noerrdialogs --disable-3d-apis --disable-breakpad --disable-crash-reporter --disable-infobars --disable-session-crashed-bubble --disable-translate --user-data-dir=/data/volumiokiosk http://localhost:3000
           ├─1425 /usr/bin/pulseaudio --start
           ├─1454 /usr/lib/chromium-browser/chromium-browser --type=zygote --force-device-scale-factor=1 --noerrdialogs --user-data-dir=/data/volumiokiosk --ppapi-flash-path=/usr/lib/chromium-browser/libpepflashplayer.so
           ├─1477 /bin/sh /usr/bin/start-pulseaudio-x11
           ├─1478 /usr/bin/xprop -root -spy
           ├─1482 /usr/lib/chromium-browser/chromium-browser --type=zygote --force-device-scale-factor=1 --noerrdialogs --user-data-dir=/data/volumiokiosk --ppapi-flash-path=/usr/lib/chromium-browser/libpepflashplayer.so
           └─1523 /usr/lib/chromium-browser/chromium-browser --type=renderer --disable-3d-apis --disable-breakpad --disable-pinch --enable-pinch --force-device-scale-factor=1 --enable-features=AutofillCreditCardSigninPromo<AutofillCreditCardSigninPromo,AutofillProfileCleanup<AutofillProfileCleanup,DocumentWriteEvaluator<DisallowFetchForDocWrittenScriptsInMainFrame,ExpectCTReporting<ExpectCTReporting,IncidentReportingDisableUpload<SafeBrowsingIncidentReportingService,IncidentReportingModuleLoadAnalysis<SafeBrowsingIncidentReportingServiceFeatures,IncidentReportingSuspiciousModuleReporting<SafeBrowsingIncidentReportingServiceFeatures,MaterialDesignUserManager<MaterialDesignUserManager,NegotiateTLS13<TLS13Negotiation,NetworkTimeServiceQuerying<NetworkTimeQueries,NewAudioRenderingMixingStrategy<NewAudioRenderingMixingStrategy

Jul 07 18:48:08 volumio startx[1277]: (++) from command line, (!!) notice, (II) informational,
Jul 07 18:48:08 volumio startx[1277]: (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
Jul 07 18:48:08 volumio startx[1277]: (==) Log file: "/var/log/Xorg.0.log", Time: Wed Jul  7 18:48:08 2021
Jul 07 18:48:08 volumio startx[1277]: (==) Using config directory: "/etc/X11/xorg.conf.d"
Jul 07 18:48:08 volumio startx[1277]: (==) Using system config directory "/usr/share/X11/xorg.conf.d"
Jul 07 18:48:08 volumio startx[1277]: modprobe: FATAL: Module g2d_23 not found.
Jul 07 18:48:16 volumio pulseaudio[1425]: Unable to contact D-Bus: org.freedesktop.DBus.Error.Spawn.ExecFailed: /usr/bin/dbus-launch terminated abnormally without any error message
Jul 07 18:48:16 volumio pulseaudio[1425]: Unable to contact D-Bus: org.freedesktop.DBus.Error.Spawn.ExecFailed: /usr/bin/dbus-launch terminated abnormally without any error message
Jul 07 18:48:16 volumio pulseaudio[1425]: org.bluez.Manager.GetProperties() failed: org.freedesktop.DBus.Error.UnknownMethod: Method "GetProperties" with signature "" on interface "org.bluez.Manager" doesn't exist
Jul 07 18:48:16 volumio pulseaudio[1425]: org.bluez.Manager.GetProperties() failed: org.freedesktop.DBus.Error.UnknownMethod: Method "GetProperties" with signature "" on interface "org.bluez.Manager" doesn't exist

gvolt · July 7, 2021, 6:52pm

Does it help if you remove fbcon=map:10 from “/boot/cmdline.txt”?

Quietimpact · July 7, 2021, 8:12pm

Does it help if you remove fbcon=map:10 from “/boot/cmdline.txt”?

Nope, that was one of the things that the FAQ of the screen maker said to do…

What I have realised is that /dev/fb0 should be /dev/fb1 (I think). But I have no idea how to fix that

gvolt · July 7, 2021, 8:13pm

Yep. In “/usr/share/X11/xorg.conf.d/99-fbturbo.conf” try changing the line

Option "fbdev” “/dev/fb0"

to

Option "fbdev" "/dev/fb1"

Then disable and re-enable the Touch Display plugin.

Quietimpact · July 7, 2021, 9:07pm

So I’ve tried that and it hasn’t changed anything.

ls /dev/fb* returns /dev/fb0 still even though I have rebooted and checked 99-fbturbo.conf again and found it is still edited as above.

gvolt · July 7, 2021, 9:12pm

Could you post the output of

cat /usr/share/X11/xorg.conf.d/99-fbturbo.conf

and again of

cat /var/log/Xorg.0.log

please?

Quietimpact · July 7, 2021, 9:27pm

Results of cat /usr/share/X11/xorg.conf.d/99-fbturbo.conf

# This is a minimal sample config file, which can be copied to
# /etc/X11/xorg.conf in order to make the Xorg server pick up
# and load xf86-video-fbturbo driver installed in the system.
#
# When troubleshooting, check /var/log/Xorg.0.log for the debugging
# output and error messages.
#
# Run "man fbturbo" to get additional information about the extra
# configuration options for tuning the driver.

Section "Device"
        Identifier      "Allwinner A10/A13 FBDEV"
        Driver          "fbturbo"
        Option          "fbdev" "/dev/fb1"

        Option          "SwapbuffersWait" "true"
EndSection

Results of cat /var/log/Xorg.0.log

[    70.819] 
X.Org X Server 1.18.4
Release Date: 2016-07-19
[    70.820] X Protocol Version 11, Revision 0
[    70.820] Build Operating System: Linux 4.4.26-v7+ armv7l Raspbian
[    70.820] Current Operating System: Linux volumio 4.19.118-v7+ #1311 SMP Mon Apr 27 14:21:24 BST 2020 armv7l
[    70.820] Kernel command line: coherent_pool=1M bcm2708_fb.fbwidth=640 bcm2708_fb.fbheight=480 bcm2708_fb.fbswap=1 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=ttyAMA0,115200 kgdboc=ttyAMA0,115200 console=ttyl 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
[    70.820] Build Date: 11 November 2016  11:59:59AM
[    70.820] xorg-server 2:1.18.4-2+rpi1 (https://www.debian.org/support) 
[    70.820] Current version of pixman: 0.32.6
[    70.820] 	Before reporting problems, check http://wiki.x.org
	to make sure that you have the latest version.
[    70.820] Markers: (--) probed, (**) from config file, (==) default setting,
	(++) from command line, (!!) notice, (II) informational,
	(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[    70.821] (==) Log file: "/var/log/Xorg.0.log", Time: Wed Jul  7 20:36:05 2021
[    70.832] (==) Using config directory: "/etc/X11/xorg.conf.d"
[    70.832] (==) Using system config directory "/usr/share/X11/xorg.conf.d"
[    70.846] (==) No Layout section.  Using the first Screen section.
[    70.846] (==) No screen section available. Using defaults.
[    70.846] (**) |-->Screen "Default Screen Section" (0)
[    70.846] (**) |   |-->Monitor "<default monitor>"
[    70.853] (==) No device specified for screen "Default Screen Section".
	Using the first device section listed.
[    70.853] (**) |   |-->Device "Allwinner A10/A13 FBDEV"
[    70.853] (==) No monitor specified for screen "Default Screen Section".
	Using a default monitor configuration.
[    70.854] (==) Automatically adding devices
[    70.854] (==) Automatically enabling devices
[    70.854] (==) Automatically adding GPU devices
[    70.861] (==) Max clients allowed: 256, resource mask: 0x1fffff
[    70.865] (WW) The directory "/usr/share/fonts/X11/cyrillic" does not exist.
[    70.865] 	Entry deleted from font path.
[    70.876] (==) FontPath set to:
	/usr/share/fonts/X11/misc,
	/usr/share/fonts/X11/100dpi/:unscaled,
	/usr/share/fonts/X11/75dpi/:unscaled,
	/usr/share/fonts/X11/Type1,
	/usr/share/fonts/X11/100dpi,
	/usr/share/fonts/X11/75dpi,
	built-ins
[    70.876] (==) ModulePath set to "/usr/lib/xorg/modules"
[    70.876] (II) The server relies on udev to provide the list of input devices.
	If no devices become available, reconfigure udev or disable AutoAddDevices.
[    70.876] (II) Loader magic: 0x6b0f20
[    70.876] (II) Module ABI versions:
[    70.876] 	X.Org ANSI C Emulation: 0.4
[    70.876] 	X.Org Video Driver: 20.0
[    70.876] 	X.Org XInput driver : 22.1
[    70.876] 	X.Org Server Extension : 9.0
[    70.881] (--) using VT number 2

[    70.881] (II) systemd-logind: logind integration requires -keeptty and -keeptty was not provided, disabling logind integration
[    70.882] (II) no primary bus or device found
[    70.883] (II) LoadModule: "glx"
[    70.888] (II) Loading /usr/lib/xorg/modules/extensions/libglx.so
[    70.973] (II) Module glx: vendor="X.Org Foundation"
[    70.973] 	compiled for 1.18.4, module version = 1.0.0
[    70.973] 	ABI class: X.Org Server Extension, version 9.0
[    70.973] (==) AIGLX enabled
[    70.973] (II) LoadModule: "fbturbo"
[    70.976] (II) Loading /usr/lib/xorg/modules/drivers/fbturbo_drv.so
[    70.983] (II) Module fbturbo: vendor="X.Org Foundation"
[    70.984] 	compiled for 1.18.4, module version = 0.5.1
[    70.984] 	Module class: X.Org Video Driver
[    70.984] 	ABI class: X.Org Video Driver, version 20.0
[    70.984] (II) FBTURBO: driver for framebuffer: fbturbo
[    70.990] (WW) Falling back to old probe method for fbturbo
[    70.990] (II) Loading sub module "fbdevhw"
[    70.990] (II) LoadModule: "fbdevhw"
[    70.990] (II) Loading /usr/lib/xorg/modules/libfbdevhw.so
[    70.994] (II) Module fbdevhw: vendor="X.Org Foundation"
[    70.994] 	compiled for 1.18.4, module version = 0.0.2
[    70.994] 	ABI class: X.Org Video Driver, version 20.0
[    70.994] (EE) open /dev/fb1: No such file or directory
[    70.994] (EE) No devices detected.
[    70.994] (EE) 
Fatal server error:
[    70.994] (EE) no screens found(EE) 
[    70.994] (EE) 
Please consult the The X.Org Foundation support 
	 at http://wiki.x.org
 for help. 
[    70.994] (EE) Please also check the log file at "/var/log/Xorg.0.log" for additional information.
[    70.994] (EE) 
[    71.005] (EE) Server terminated with error (1). Closing log file.

Thanks a lot for your help!

gvolt · July 7, 2021, 10:03pm

Hm, it seems the screen is not recognized.

Is this with fbcon=map:10 added back to “/boot/cmdline.txt”?

Is the tingbot overlay loaded?

lsmod | grep tingbot

gvolt · July 7, 2021, 10:27pm

Could you post pictures of the displays PCB (both sides)?

Quietimpact · July 7, 2021, 10:36pm

Is this with fbcon=map:10 added back to “/boot/cmdline.txt”?

Yeap I added it back in

Is the tingbot overlay loaded?

I used filezilla to copy-paste the overlay into /boot/overlays and have checked that it is still there.

Images below - the text on the front isnt particularly clear, but says 3231-SZ

gvolt · July 7, 2021, 10:51pm

And is it loaded? Please check with

lsmod | grep tingbot

gvolt · July 8, 2021, 7:17am

According to this the tingbot overlay does not work with kernels newer than 4.19.

Quietimpact · July 8, 2021, 6:40pm

According to this the tingbot overlay does not work with kernels newer than 4.19.

Ah bugger! I don’t quite fancy downgrading the kernel just for a screen. So I suppose I’ll buy a different one.

Thanks a lot for your help! I really appreciate it!