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Eglfs on raspberry2 - * failed to add service - already in use?

This is my first post here.

I would like it to be short ...

The following problem:

I want to run a qt5 / qtquickcontrols2 application using eglfs backend on raspberry-pi 2b, accelerated, of course, vc4. Ideally, it should work in kiosk mode, and it definitely needs accelerated gl functionality. To minimize problems, I checked with the command:

LD_PRELOAD="/opt/vc/lib/libGLESv2.so /opt/vc/lib/libEGL.so" qmlscene ./gallery.qml

where gallery.qml is just an example of a qt-creator widget preview project (following these instructions ...). I get the following error message:

[manjaro@Loki gallery]$ LD_PRELOAD="/opt/vc/lib/libGLESv2.so /opt/vc/lib/libEGL.so" qmlscene ./gallery.qml
qt.qpa.egldeviceintegration: EGL device integration plugin keys: ("eglfs_brcm", "eglfs_kms", "eglfs_x11")
qt.qpa.egldeviceintegration: EGL device integration plugin keys (sorted): ("eglfs_brcm", "eglfs_kms", "eglfs_x11")
qt.qpa.egldeviceintegration: Trying to load device EGL integration "eglfs_brcm"
qt.qpa.egldeviceintegration: Using EGL device integration "eglfs_brcm"
* failed to add service - already in use?

- - . , , qt5, , .

/:

  • 2b
  • -5.7.0
  • Manjaro-ARM ( Arch Linux ARM)
  • , , ,

...

[manjaro@Loki gallery]$ uname -a
Linux Loki 4.4.28-1-MANJARO-ARM #1 SMP Sat Oct 29 21:01:09 CDT 2016 armv7l GNU/Linux

config.txt

dtparam=audio=on
#hdmi_drive=2
avoid_warnings=2
disable_overscan=1
disable_splash=1
boot_delay=0

# activate raspi cam
start_x=1

# tuning gpu accel and memory usage
gpu_mem=320
dtoverlay=vc4-kms-v3d

cmdline.txt

root=/dev/mmcblk0p2 rw  rootwait console=tty1 selinux=0 quiet plymouth.ignore-serial-consoles dwc_otg.lpm_enable=0 elevator=deadline fsck.repair=yes

printenv :

XDG_SESSION_ID=c1
TERM=xterm
SHELL=/bin/bash
SSH_CLIENT=192.168.0.100 43274 22
QT_QPA_EGLFS_INTEGRATION=eglfs_brcm
OLDPWD=/home/manjaro
SSH_TTY=/dev/pts/0
USER=manjaro
MOZ_PLUGIN_PATH=/usr/lib/mozilla/plugins
MAIL=/var/spool/mail/manjaro
PATH=/usr/local/sbin:/usr/local/bin:/usr/bin:/opt/vc/bin:/usr/bin/site_perl:/usr/bin/vendor_perl:/usr/bin/core_perl
PWD=/home/manjaro/opt
LANG=de_DE.UTF-8
QT_QPA_PLATFORM=eglfs
SHLVL=1
HOME=/home/manjaro
LOGNAME=manjaro
QT_LOGGING_RULES=qt.qpa.*=true
DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/1000/bus
SSH_CONNECTION=192.168.0.100 43274 192.168.0.107 22
XDG_RUNTIME_DIR=/run/user/1000
_=/usr/bin/printenv

Qt: eglfs : QT_QPA_EGLFS_INTEGRATION=eglfs_brcm, , broadcom eglfs. eglfs_brcm eglfs_kms ( ):

[manjaro@Loki gallery]$ export QT_QPA_EGLFS_INTEGRATION=eglfs_kms
[manjaro@Loki gallery]$ LD_PRELOAD="/opt/vc/lib/libGLESv2.so /opt/vc/lib/libEGL.so" qmlscene ./gallery.qml 
qt.qpa.egldeviceintegration: EGL device integration plugin keys: ("eglfs_brcm", "eglfs_kms", "eglfs_x11")
qt.qpa.egldeviceintegration: EGL device integration plugin keys (sorted): ("eglfs_kms", "eglfs_brcm", "eglfs_x11")
qt.qpa.egldeviceintegration: Trying to load device EGL integration "eglfs_kms"
qt.qpa.egldeviceintegration: Using EGL device integration "eglfs_kms"
qt.qpa.input: udev device discovery for type QFlags(0x10)
qt.qpa.input: Found matching devices ("/dev/dri/card0")
qt.qpa.eglfs.kms: Found the following video devices: ("/dev/dri/card0")
qt.qpa.eglfs.kms: Using "/dev/dri/card0"
qt.qpa.eglfs.kms: Opening device "/dev/dri/card0"
qt.qpa.eglfs.kms: Creating GBM device for file descriptor 5 obtained from "/dev/dri/card0"
* failed to add service - already in use?

, "" Qt manjaro-arm. , - , ? ?

, , , glxgears ~ 60FPS, xfce4. :

[root@Loki gallery]# vcdbg log msg|& grep -v gpioman|grep -iv hdmi
001042.905: *** Restart logging
001043.889: Read command line from file 'cmdline.txt'
root=/dev/mmcblk0p2 rw  rootwait console=tty1 selinux=0 nofb dwc_otg.lpm_enable=0 elevator=deadline fsck.repair=yes
001409.425: Loading 'kernel7.img' to 0x8000 size 0x5ea25c
001413.076: Kernel trailer DTOK property says yes
001413.091: Kernel trailer DDTK property says yes
001415.514: Loading 'bcm2709-rpi-2-b.dtb' to 0x5f225c size 0x3bfc
001514.479: dtparam: audio=on
001567.591: Loaded overlay 'vc4-kms-v3d'
001836.841: Device tree loaded to 0x2effbc00 (size 0x430d)
005904.220: vchiq_core: vchiq_init_state: slot_zero = 0xd0400000, is_master = 1
005911.919: TV service:host side not connected, dropping notification 0x00000002, 0x00000001, 0x00000010
007999.619: camsubs: Looking for camera 0: i2c_port = 0, led gpio = 32, power enable gpio = 41
008000.339: camsubs: Camera not found
008000.377: camsubs: Looking for camera 0: i2c_port = 0, led gpio = 32, power enable gpio = 41
008001.091: camsubs: Camera not found
008001.128: camsubs: Looking for camera 0: i2c_port = 0, led gpio = 32, power enable gpio = 41
008001.844: camsubs: Camera not found

, .

:

gpu_mem, 128 448. gpu mem , , .

[manjaro@Loki gallery]$ vcgencmd get_mem gpu
gpu=320M

udev, ,

[manjaro@Loki gallery]$ cat /etc/udev/rules.d/10-vchiq-permissions.rules 
SUBSYSTEM=="vchiq",GROUP="video",MODE="0660"

[manjaro@Loki gallery]$ groups
wheel video storage power users

udev :

[manjaro@Loki gallery]$ LD_PRELOAD="/opt/vc/lib/libGLESv2.so /opt/vc/lib/libEGL.so" qmlscene ./gallery.qml 
qt.qpa.egldeviceintegration: EGL device integration plugin keys: ("eglfs_brcm", "eglfs_kms", "eglfs_x11")
qt.qpa.egldeviceintegration: EGL device integration plugin keys (sorted): ("eglfs_brcm", "eglfs_kms", "eglfs_x11")
qt.qpa.egldeviceintegration: Trying to load device EGL integration "eglfs_brcm"
qt.qpa.egldeviceintegration: Using EGL device integration "eglfs_brcm"
* failed to open vchiq instance

... ... , ...

, :

  • anser, ( )
  • ( )
  • sdcard ( )

Qt-5.7/qtquickcontrols2/QML, raspberrypi 2 EGLFS vc4??? ...

+6
1

.

, vc4-kms-v3d ( config.txt) (/opt/vc/lib/libGLESv2.so /opt/vc/lib/libEGL.so LD_PRELOAD).

failed to add service - already in use?

, , .

, config.txt, LD_PRELOAD QT_QPA_EGLFS_INTEGRATION = eglfs_brcm

+1

Source: https://habr.com/ru/post/1660196/

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