Raspberry 4 & Yocto & Xorg : tslib is flooding my console with "tslib: Selected device is not a Linux input event device" error

[Julien-Faure]

Hello all,

I use a Raspberry 4 with Raspberry touch screen (800x480), I have a custom os built from Yocto. I use the tslib driver to use my touch screen.

All works that i want it but, when I touch my screen, tslib: Selected device is not a Linux input event device error flood my console (serial debug console) and create perfomances drops.

Can you help me please ?

Thank you in advance.

My /etc/ts.conf file :

# Uncomment if you wish to use the linux input layer event interface
module_raw input

# Uncomment if you're using a Sharp Zaurus SL-5500/SL-5000d
# module_raw collie

# Uncomment if you're using a Sharp Zaurus SL-C700/C750/C760/C860
# module_raw corgi

# Uncomment if you're using a device with a UCB1200/1300/1400 TS interface
# module_raw ucb1x00

# Uncomment if you're using an HP iPaq h3600 or similar
# module_raw h3600

# Uncomment if you're using a Hitachi Webpad
# module_raw mk712

# Uncomment if you're using an IBM Arctic II
# module_raw arctic2

module pthres pmin=1
module variance delta=30
module dejitter delta=100
module linear

My Xorg log

[     7.761]
X.Org X Server 1.20.8
X Protocol Version 11, Revision 0
[     7.762] Build Operating System: Linux
[     7.762] Current Operating System: Linux raspberrypi4-64 5.4.72-v8 #1 SMP PREEMPT Mon Oct 19 11:12:20 UTC 2020 aarch64
[     7.762] Kernel command line: coherent_pool=1M 8250.nr_uarts=1 snd_bcm2835.enable_compat_alsa=0 snd_bcm2835.enable_hdmi=1 snd_bcm2835.enable_headphones=1 video=HDMI-A-1:800x480M@59 smsc95xx.macaddr=DC:A6:32:94:BA:C9 vc_mem.mem_base=0x3ec00000 vc_mem.mem_size=0x40000000  dwc_otg.lpm_enable=0 console=ttyS0,115200 root=/dev/mmcblk0p2 rootfstype=ext4 rootwait logo.nologo vt.global_cursor_default=0 psplash=false
[     7.762] Build Date: 29 March 2020  08:21:46PM
[     7.762]
[     7.762] Current version of pixman: 0.38.4
[     7.762]    Before reporting problems, check http://wiki.x.org
        to make sure that you have the latest version.
[     7.762] Markers: (--) probed, (**) from config file, (==) default setting,
        (++) from command line, (!!) notice, (II) informational,
        (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[     7.762] (==) Log file: "/var/log/Xorg.0.log", Time: Fri Mar  9 12:35:19 2018
[     7.786] (==) Using config file: "/etc/X11/xorg.conf"
[     7.786] (==) Using system config directory "/usr/share/X11/xorg.conf.d"
[     7.808] (==) No Layout section.  Using the first Screen section.
[     7.808] (==) No screen section available. Using defaults.
[     7.808] (**) |-->Screen "Default Screen Section" (0)
[     7.808] (**) |   |-->Monitor "<default monitor>"
[     7.809] (==) No monitor specified for screen "Default Screen Section".
        Using a default monitor configuration.
[     7.809] (==) Automatically adding devices
[     7.809] (==) Automatically enabling devices
[     7.809] (==) Automatically adding GPU devices
[     7.809] (==) Max clients allowed: 256, resource mask: 0x1fffff
[     7.816] (WW) The directory "/usr/share/fonts/X11/misc/" does not exist.
[     7.816]    Entry deleted from font path.
[     7.816] (WW) The directory "/usr/share/fonts/X11/TTF/" does not exist.
[     7.816]    Entry deleted from font path.
[     7.816] (WW) The directory "/usr/share/fonts/X11/OTF/" does not exist.
[     7.816]    Entry deleted from font path.
[     7.816] (WW) The directory "/usr/share/fonts/X11/Type1/" does not exist.
[     7.816]    Entry deleted from font path.
[     7.816] (WW) The directory "/usr/share/fonts/X11/100dpi/" does not exist.
[     7.816]    Entry deleted from font path.
[     7.816] (WW) The directory "/usr/share/fonts/X11/75dpi/" does not exist.
[     7.816]    Entry deleted from font path.
[     7.816] (==) FontPath set to:

[     7.816] (==) ModulePath set to "/usr/lib/xorg/modules"
[     7.816] (II) The server relies on udev to provide the list of input devices.
        If no devices become available, reconfigure udev or disable AutoAddDevices.
[     7.816] (II) Loader magic: 0x557f500c28
[     7.816] (II) Module ABI versions:
[     7.816]    X.Org ANSI C Emulation: 0.4
[     7.816]    X.Org Video Driver: 24.1
[     7.816]    X.Org XInput driver : 24.1
[     7.816]    X.Org Server Extension : 10.0
[     7.817] (II) xfree86: Adding drm device (/dev/dri/card1)
[     7.828] (II) xfree86: Adding drm device (/dev/dri/card0)
[     7.829] (II) no primary bus or device found
[     7.829]    falling back to /sys/devices/platform/gpu/drm/card1
[     7.829] (II) LoadModule: "glx"
[     7.853] (II) Loading /usr/lib/xorg/modules/extensions/libglx.so
[     8.117] (II) Module glx: vendor="X.Org Foundation"
[     8.117]    compiled for 1.20.8, module version = 1.0.0
[     8.117]    ABI class: X.Org Server Extension, version 10.0
[     8.117] (==) Matched modesetting as autoconfigured driver 0
[     8.117] (==) Matched fbdev as autoconfigured driver 1
[     8.117] (==) Assigned the driver to the xf86ConfigLayout
[     8.117] (II) LoadModule: "modesetting"
[     8.118] (II) Loading /usr/lib/xorg/modules/drivers/modesetting_drv.so
[     8.127] (II) Module modesetting: vendor="X.Org Foundation"
[     8.127]    compiled for 1.20.8, module version = 1.20.8
[     8.127]    Module class: X.Org Video Driver
[     8.127]    ABI class: X.Org Video Driver, version 24.1
[     8.127] (II) LoadModule: "fbdev"
[     8.128] (WW) Warning, couldn't open module fbdev
[     8.128] (EE) Failed to load module "fbdev" (module does not exist, 0)
[     8.128] (II) modesetting: Driver for Modesetting Kernel Drivers: kms
[     8.128] (--) using VT number 2

[     8.153] (II) modeset(0): using drv /dev/dri/card1
[     8.154] (II) modeset(0): Creating default Display subsection in Screen section
        "Default Screen Section" for depth/fbbpp 24/32
[     8.154] (==) modeset(0): Depth 24, (==) framebuffer bpp 32
[     8.154] (==) modeset(0): RGB weight 888
[     8.154] (==) modeset(0): Default visual is TrueColor
[     8.154] (II) Loading sub module "glamoregl"
[     8.154] (II) LoadModule: "glamoregl"
[     8.154] (II) Loading /usr/lib/xorg/modules/libglamoregl.so
[     8.291] (II) Module glamoregl: vendor="X.Org Foundation"
[     8.291]    compiled for 1.20.8, module version = 1.0.1
[     8.291]    ABI class: X.Org ANSI C Emulation, version 0.4
[     8.895] (II) modeset(0): glamor X acceleration enabled on V3D 4.2
[     8.895] (II) modeset(0): glamor initialized
[     8.895] (II) modeset(0): Output DSI-1 has no monitor section
[     8.896] (II) modeset(0): EDID for output DSI-1
[     8.896] (II) modeset(0): Printing probed modes for output DSI-1
[     8.896] (II) modeset(0): Modeline "FIXED_MODE"x60.0   27.78  800 861 863 907  480 487 489 510 +hsync +vsync (30.6 kHz eP)
[     8.896] (II) modeset(0): Output DSI-1 connected
[     8.896] (II) modeset(0): Using exact sizes for initial modes
[     8.896] (II) modeset(0): Output DSI-1 using initial mode FIXED_MODE +0+0
[     8.896] (==) modeset(0): Using gamma correction (1.0, 1.0, 1.0)
[     8.896] (==) modeset(0): DPI set to (96, 96)
[     8.896] (II) Loading sub module "fb"
[     8.896] (II) LoadModule: "fb"
[     8.896] (II) Loading /usr/lib/xorg/modules/libfb.so
[     8.902] (II) Module fb: vendor="X.Org Foundation"
[     8.902]    compiled for 1.20.8, module version = 1.0.0
[     8.902]    ABI class: X.Org ANSI C Emulation, version 0.4
[     9.108] (==) modeset(0): Backing store enabled
[     9.108] (==) modeset(0): Silken mouse enabled
[     9.190] (II) modeset(0): Initializing kms color map for depth 24, 8 bpc.
[     9.190] (==) modeset(0): DPMS enabled
[     9.190] (II) modeset(0): [DRI2] Setup complete
[     9.190] (II) modeset(0): [DRI2]   DRI driver: vc4
[     9.190] (II) modeset(0): [DRI2]   VDPAU driver: vc4
[     9.190] (II) Initializing extension Generic Event Extension
[     9.190] (II) Initializing extension SHAPE
[     9.190] (II) Initializing extension MIT-SHM
[     9.190] (II) Initializing extension XInputExtension
[     9.198] (II) Initializing extension XTEST
[     9.198] (II) Initializing extension BIG-REQUESTS
[     9.198] (II) Initializing extension SYNC
[     9.198] (II) Initializing extension XKEYBOARD
[     9.198] (II) Initializing extension XC-MISC
[     9.198] (II) Initializing extension XFIXES
[     9.198] (II) Initializing extension RENDER
[     9.198] (II) Initializing extension RANDR
[     9.198] (II) Initializing extension COMPOSITE
[     9.198] (II) Initializing extension DAMAGE
[     9.198] (II) Initializing extension MIT-SCREEN-SAVER
[     9.198] (II) Initializing extension DOUBLE-BUFFER
[     9.198] (II) Initializing extension DPMS
[     9.198] (II) Initializing extension Present
[     9.198] (II) Initializing extension DRI3
[     9.198] (II) Initializing extension X-Resource
[     9.198] (II) Initializing extension XVideo
[     9.198] (II) Initializing extension XVideo-MotionCompensation
[     9.198] (II) Initializing extension GLX
[     9.208] (II) AIGLX: Loaded and initialized vc4
[     9.208] (II) GLX: Initialized DRI2 GL provider for screen 0
[     9.208] (II) Initializing extension XFree86-VidModeExtension
[     9.208] (II) Initializing extension XFree86-DGA
[     9.208] (II) Initializing extension XFree86-DRI
[     9.210] (II) Initializing extension DRI2
[     9.217] (II) modeset(0): Damage tracking initialized
[     9.217] (II) modeset(0): Setting screen physical size to 211 x 127
[     9.357] (II) config/udev: Adding input device raspberrypi-ts (/dev/input/event0)
[     9.357] (**) raspberrypi-ts: Applying InputClass "evdev touchscreen catchall"
[     9.357] (**) raspberrypi-ts: Applying InputClass "libinput touchscreen catchall"
[     9.357] (**) raspberrypi-ts: Applying InputClass "tslib touchscreen"
[     9.357] (II) LoadModule: "tslib"
[     9.357] (II) Loading /usr/lib/xorg/modules/input/tslib_drv.so
[     9.361] (II) Module tslib: vendor="X.Org Foundation"
[     9.361]    compiled for 1.20.8, module version = 0.0.1
[     9.361]    Module class: X.Org XInput Driver
[     9.361]    ABI class: X.Org XInput driver, version 24.1
[     9.361] (II) Using input driver 'tslib' for 'raspberrypi-ts'
[     9.361] (**) raspberrypi-ts: always reports core events
[     9.361] (**) raspberrypi-ts: always reports core events
[     9.368] (**) Option "config_info" "udev:/sys/devices/platform/soc/soc:firmware/soc:firmware:touchscreen/input/input0/event0"
[     9.368] (II) XINPUT: Adding extended input device "raspberrypi-ts" (type: TOUCHSCREEN, id 6)
[     9.368] (**) raspberrypi-ts: (accel) keeping acceleration scheme 1
[     9.368] (**) raspberrypi-ts: (accel) acceleration profile 0
[     9.368] (**) raspberrypi-ts: (accel) acceleration factor: 2.000
[     9.368] (**) raspberrypi-ts: (accel) acceleration threshold: 4
[     9.369] (II) config/udev: Adding input device raspberrypi-ts (/dev/input/mouse0)
[     9.369] (**) raspberrypi-ts: Applying InputClass "tslib touchscreen"
[     9.369] (II) Using input driver 'tslib' for 'raspberrypi-ts'
[     9.369] (**) raspberrypi-ts: always reports core events
[     9.369] (**) raspberrypi-ts: always reports core events
[     9.369] (**) Option "config_info" "udev:/sys/devices/platform/soc/soc:firmware/soc:firmware:touchscreen/input/input0/mouse0"
[     9.369] (II) XINPUT: Adding extended input device "raspberrypi-ts" (type: TOUCHSCREEN, id 7)
[     9.369] (**) raspberrypi-ts: (accel) keeping acceleration scheme 1
[     9.369] (**) raspberrypi-ts: (accel) acceleration profile 0
[     9.369] (**) raspberrypi-ts: (accel) acceleration factor: 2.000
[     9.369] (**) raspberrypi-ts: (accel) acceleration threshold: 4
[    24.290] (II) modeset(0): Disabling kernel dirty updates, not required.

[Julien-Faure]

I don't find the problem but I found an alternative :

I changed my DM, from LXDE to XFCE4.

[HosseinKasaei]

I don't find the problem but I found an alternative :

I changed my DM, from LXDE to XFCE4.

I have exactly the same problem but I'm not using any desktop environment just openbox as a window manager. Do you have any idea how I can fix that?

[HosseinKasaei]

I've found a solution!
I'm using RPi CM4, building a custom OS using buildroot (using rasberrpypicm4io_64_defconfig). I've tested with two LCD models from Waveshare and both worked well:
-7inch IPS/QLED (70H-1024600-IPS-CT-B)
-7inch Capacitive Touch Screen LCD (C)
Running x server (startx) with openbox session.
Libraries version:
tslib v1.23
xf86-input-tslib v0.0.7

Configurations:
1- Change first line of /etc/ts.conf as bellow:
module_raw waveshare vid_pid=0eef:0005 len=25
2- Add a configuration file for the touchscreen event (in my case it was event2, you can check yours in /dev/input) in /etc/X11/xorg.conf.d/99-touchscreen.conf (create the sub dir xorg.conf.d if not existed):

Section "InputClass"
    Identifier "WaveShare Touchscreen"
    MatchIsTouchscreen "on"
    MatchDevicePath "/dev/input/event2"
    Driver "evdev"
    Option "Device" "/dev/input/event2"
EndSection

You can either use evdev or libinput as driver.
ts_calibrate doesn't work for me but doesn't matter cause the touchscreen works well for me without calibration.