Weston-6.0.0 fails to run with pixman on IMX8

[Sami Md]

Hi,
I am trying to run Weston-6.0.0 on IMX8mqev Yocto Linux.

I executed below command to run the Weston-6 on TTY-7 using pixman.

# weston --tty=7 --use-pixman

But I got below error:
root at imx8mqevk:~# weston --tty=7 --use-pixman
Date: 2020-07-29 UTC
[06:01:24.327] weston 6.0.0
               https://wayland.freedesktop.org
               Bug reports to:
https://gitlab.freedesktop.org/wayland/weston/issues/
               Build: 6.0.0-33-g81b11811-dirty compositor-drm: Bypass the
check of the libinput (2019-06-06 17:54:16 +0800)
[06:01:24.327] Command line: weston --tty=7 --use-pixman
[06:01:24.327] OS: Linux, 4.19.35+ge4452f4458e4, #1 SMP PREEMPT Thu Jul 23
23:37:43 ACST 2020, aarch64
[06:01:24.328] Using config file '/etc/xdg/weston/weston.ini'
[06:01:24.328] Output repaint window is 34 ms maximum.
[06:01:24.328] Loading module '/usr/lib/libweston-6/drm-backend.so'
[06:01:24.350] initializing drm backend
[06:01:24.351] logind: failed to get session seat
[06:01:24.351] logind: cannot setup systemd-logind helper (-61), using
legacy fallback
[06:01:24.359] using /dev/dri/card0
[06:01:24.359] DRM: supports universal planes
[06:01:24.359] DRM: supports atomic modesetting
[06:01:24.359] DRM: supports picture aspect ratio
[06:01:24.359] Loading module '/usr/lib/libweston-6/gl-renderer.so'
[06:01:24.410] EGL client extensions: EGL_EXT_client_extensions
               EGL_EXT_platform_base EGL_KHR_platform_wayland
               EGL_EXT_platform_wayland EGL_KHR_platform_gbm
[     1] Failed to open device: No such file or directory, Try again...
[     2] Failed to open device: No such file or directory, Try again...
[     3] Failed to open device: No such file or directory, Try again...
[     4] Failed to open device: No such file or directory, Try again...
[     5] _OpenDevice(1228): FATAL: Failed to open device, errno=No such
file or directory.
[     6] Failed to open device: No such file or directory, Try again...
[     7] Failed to open device: No such file or directory, Try again...
[     8] Failed to open device: No such file or directory, Try again...
[     9] Failed to open device: No such file or directory, Try again...
[    10] _OpenDevice(1228): FATAL: Failed to open device, errno=No such
file or directory.
root at imx8mqevk:~# [  690.668220] random: crng init done
[  690.668247] random: 7 urandom warning(s) missed due to ratelimiting
[ 1824.050168] audit: type=1006 audit(1596004201.751:4): pid=3134 uid=0
old-auid=4294967295 auid=0 tty=(none) old-ses=4294967295 ses=3 res=1

my weston.ini
-------------------
root at imx8mqevk:~# cat /etc/xdg/weston/weston.ini
[core]
repaint-window=34

weston.log
--------------
root at imx8mqevk:~# cat /var/log/weston.log
Date: 2020-07-29 UTC
[05:55:45.406] weston 6.0.0
               https://wayland.freedesktop.org
               Bug reports to:
https://gitlab.freedesktop.org/wayland/weston/issues/
               Build: 6.0.0-33-g81b11811-dirty compositor-drm: Bypass the
check of the libinput (2019-06-06 17:54:16 +0800)
[05:55:45.407] Command line: /usr/bin/weston --log=/var/log/weston.log
[05:55:45.407] OS: Linux, 4.19.35+ge4452f4458e4, #1 SMP PREEMPT Thu Jul 23
23:37:43 ACST 2020, aarch64
[05:55:45.410] Using config file '/etc/xdg/weston/weston.ini'
[05:55:45.412] Output repaint window is 34 ms maximum.
[05:55:45.414] Loading module '/usr/lib/libweston-6/drm-backend.so'
[05:55:45.478] initializing drm backend
[05:55:45.504] logind: session control granted
[05:55:45.528] using /dev/dri/card0
[05:55:45.528] DRM: supports universal planes
[05:55:45.529] DRM: supports atomic modesetting
[05:55:45.529] DRM: supports picture aspect ratio
[05:55:45.529] Loading module '/usr/lib/libweston-6/gl-renderer.so'
[05:55:45.684] EGL client extensions: EGL_EXT_client_extensions
               EGL_EXT_platform_base EGL_KHR_platform_wayland
               EGL_EXT_platform_wayland EGL_KHR_platform_gbm


DRM used : VIRTIO-GPU DRM driver
root at imx8mqevk:~# ls -l /dev/dri/card0
crw-rw---- 1 root video 226, 0 Jul 29 05:55 /dev/dri/card0

dmesg output with drm

root at imx8mqevk:~# dmesg | grep drm
[    0.762194] [drm] virgl 3d acceleration not supported by host
[    0.772082] [drm] number of scanouts: 1
[    0.772147] [drm] number of cap sets: 0
[    0.802799] virtio_gpu virtio4: fb0: virtiodrmfb frame buffer device
[    0.802878] [drm] Initialized virtio_gpu 0.0.1 0 for virtio4 on minor 0

Note that I am trying to use pixman but Weston loads module gl-renderer.so
. Is there any way
to force the  Weston not to load gl-renderer because I am using pixman for
rendering.


Best Regards
Sami
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