[flutter-pi] Could not find a suitable DRM encoder.

[mateusz-grzegorzek]

Hello,
First of all, thanks a lot for your job!
I would be very grateful if you could help me with the DRM encoder problem when running flutter_gallery.

I've done all the steps regarding installation flutter-pi, but when I try to run flutter_galary on my
Raspberry Pi 4, flutter-pi throws below error:

pi@raspberrypi:~/Projects/flutter_gallery/build/flutter_assets $ /home/pi/flutter-pi/out/flutter-pi .
[flutter-pi] WARNING: display didn't provide valid physical dimensions. The device-pixel ratio will default to 1.0, which may not be the fitting device-pixel ratio for your display.
[flutter-pi] Could not find a suitable DRM encoder.

[ardera]

I just pushed some stuff to the develop branch that should fix this. Can you try that out and see if it fixes it?

[mateusz-grzegorzek]

pi@raspberrypi:~/flutter-pi $ git status
Your branch is up to date with 'origin/develop'.

Untracked files:
  (use "git add <file>..." to include in what will be committed)

        engine-binaries/

nothing added to commit but untracked files present (use "git add" to track)

pi@raspberrypi:~/flutter-pi $ git pull
Already up to date.

pi@raspberrypi:~/flutter-pi $ git log
commit 9b11f127fb46cb08e70b2a7cdfe8eaa8de977d5f (HEAD)
Author: Renzo Olivares <rmolivares@renzo-olivares.dev>
Date:   Wed Jul 29 11:55:00 2020 -0700

    Shared y axis reverse fix (#236)

    * Add reverse property to PageTransitionSwitcher that dictates whether the new widget transitions under or over the old child

    * Remove duration that was used in testing

    * update code segments

pi@raspberrypi:~/flutter-pi $ cd ~/Projects/flutter_gallery/build/flutter_assets

pi@raspberrypi:~/Projects/flutter_gallery/build/flutter_assets $ /home/pi/flutter-pi/out/flutter-pi .
[flutter-pi] WARNING: display didn't provide valid physical dimensions.
             The device-pixel ratio will default to 1.0, which may not be the fitting device-pixel ratio for your display.
[flutter-pi] Could not find a suitable DRM encoder.

Still error :(

[ardera]

pi@raspberrypi:~/flutter-pi $ git log
commit 9b11f127fb46cb08e70b2a7cdfe8eaa8de977d5f (HEAD)
Author: Renzo Olivares <rmolivares@renzo-olivares.dev>
Date:   Wed Jul 29 11:55:00 2020 -0700

    Shared y axis reverse fix (#236)

    * Add reverse property to PageTransitionSwitcher that dictates whether the new widget transitions under or over the old child

    * Remove duration that was used in testing

    * update code segments

I think you messed something up here. flutter-pi has no commit 9b11f127fb46cb08e70b2a7cdfe8eaa8de977d5f, but flutter_gallery has. Maybe you cd'd into the flutter_gallery directory first and then ran git log? (Also, I'm pretty sure the output of git status is outdated if you didn't run git pull or git fetch before.)

Just to be on the safe side, could you please delete the whole flutter-pi folder and then check it out again using git clone -b develop https://github.com/ardera/flutter-pi.git? (Just to be sure we're not actually debugging git problems)

Also, can you send me the complete output of the raspinfo command? (Install using sudo apt install raspinfo)

[mateusz-grzegorzek]

Here is output from raspinfo: raspinfo.txt

Regarding git log - sorry for that, it was my mistake.
Here is proper output:

pi@raspberrypi:~/flutter-pi $ git pull
Already up to date.
pi@raspberrypi:~/flutter-pi $ git branch
* develop
  master
pi@raspberrypi:~/flutter-pi $ git log | head -6
commit 449c73fe07261c69dca985e41413cd527cfbe80d
Author: Hannes Winkler <hanneswinkler2000@web.de>
Date:   Fri Oct 9 00:58:12 2020 +0200

    fix typo

[ardera]

Okay, thanks

Can you try two more things?

• run kmscube (install using sudo apt install kmscube)
• run sudo apt update && sudo apt upgrade

[mateusz-grzegorzek]

I've run those commands and here is the output:

pi@raspberrypi:~ $ sudo apt update && sudo apt upgrade
Get:1 http://raspbian.raspberrypi.org/raspbian buster InRelease [15.0 kB]
Hit:2 http://archive.raspberrypi.org/debian buster InRelease
Fetched 15.0 kB in 1s (18.2 kB/s)
Reading package lists... Done
Building dependency tree
Reading state information... Done
127 packages can be upgraded. Run 'apt list --upgradable' to see them.
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
The following packages will be upgraded:
  agnostics alacarte apache2 apache2-bin apache2-data apache2-utils base-files bind9-host bluetooth bluez bluez-firmware bluez-obexd dbus-user-session firmware-atheros firmware-brcm80211 firmware-libertas firmware-misc-nonfree
  firmware-realtek glib-networking glib-networking-common glib-networking-services libbind9-161 libbluetooth3 libdbi-perl libdns-export1104 libdns1104 libexif12 libfm-data libfm-extra4 libfm-gtk-data libfm-gtk4 libfm-modules libfm4
  libgnutls30 libgs9 libgs9-common libgssdp-1.0-3 libgupnp-1.0-4 libisc-export1100 libisc1100 libisccc161 libisccfg163 libjavascriptcoregtk-4.0-18 libjson-c3 liblirc-client0 liblwres161 libmariadb3 libopenmpt-modplug1 libopenmpt0
  libpq5 libpython3.7 libpython3.7-dev libpython3.7-minimal libpython3.7-stdlib libqt5concurrent5 libqt5core5a libqt5dbus5 libqt5gui5 libqt5network5 libqt5printsupport5 libqt5sql5 libqt5sql5-sqlite libqt5widgets5 libqt5xml5
  libraspberrypi-bin libraspberrypi-dev libraspberrypi-doc libraspberrypi0 libunwind8 libvlc-bin libvlc5 libvlccore9 libwebkit2gtk-4.0-37 libx11-6 libx11-data libx11-dev libx11-xcb1 libzmq5 lxpanel lxpanel-data lxplug-bluetooth
  lxplug-cputemp lxplug-ejecter lxplug-network lxplug-ptbatt mariadb-client-10.3 mariadb-client-core-10.3 mariadb-common mariadb-server mariadb-server-10.3 mariadb-server-core-10.3 nfs-common pcmanfm pi-bluetooth pipanel piwiz pprompt
  python-pil python3-pil python3.7 python3.7-dev python3.7-minimal python3.7-venv qt5-gtk-platformtheme raspberrypi-bootloader raspberrypi-kernel raspberrypi-sys-mods raspi-config rc-gui rp-prefapps rpd-plym-splash rpi-chromium-mods
  rpi-eeprom vlc vlc-bin vlc-data vlc-l10n vlc-plugin-base vlc-plugin-notify vlc-plugin-qt vlc-plugin-samba vlc-plugin-skins2 vlc-plugin-video-output vlc-plugin-video-splitter vlc-plugin-visualization xserver-common xserver-xorg-core
127 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Need to get 264 MB of archives.
After this operation, 356 kB of additional disk space will be used.
Do you want to continue? [Y/n] y
Get:1 http://archive.raspberrypi.org/debian buster/main armhf rpi-chromium-mods armhf 20200901 [9,413 kB]
.
.
.
.
.
pi@raspberrypi:~ $ kmscube
drmModeGetResources failed: Invalid argument
failed to initialize legacy DRM
pi@raspberrypi:~ $ cd ~/Projects/flutter_gallery/build/flutter_assets
pi@raspberrypi:~/Projects/flutter_gallery/build/flutter_assets $ /home/pi/flutter-pi/out/flutter-pi .
[flutter-pi] WARNING: display didn't provide valid physical dimensions.
             The device-pixel ratio will default to 1.0, which may not be the fitting device-pixel ratio for your display.
[flutter-pi] Could not find a suitable DRM encoder.

[mateusz-grzegorzek]

kmscube with /dev/dri/card0 works:

pi@raspberrypi:~ $ sudo /usr/bin/kmscube -D /dev/dri/card1
drmModeGetResources failed: Operation not supported
failed to initialize legacy DRM
pi@raspberrypi:~ $ sudo /usr/bin/kmscube -D /dev/dri/card0
Using display 0x14915d0 with EGL version 1.4
===================================
EGL information:
  version: "1.4"
  vendor: "Mesa Project"
  client extensions: "EGL_EXT_device_base EGL_EXT_device_enumeration EGL_EXT_device_query EGL_EXT_platform_base EGL_KHR_client_get_all_proc_addresses EGL_EXT_client_extensions EGL_KHR_debug EGL_EXT_platform_wayland EGL_EXT_platform_x11 EGL_MESA_platform_gbm EGL_MESA_platform_surfaceless EGL_EXT_platform_device"
  display extensions: "EGL_ANDROID_blob_cache EGL_EXT_buffer_age EGL_EXT_image_dma_buf_import EGL_EXT_image_dma_buf_import_modifiers EGL_KHR_cl_event2 EGL_KHR_config_attribs EGL_KHR_create_context EGL_KHR_create_context_no_error EGL_KHR_fence_sync EGL_KHR_get_all_proc_addresses EGL_KHR_gl_colorspace EGL_KHR_gl_renderbuffer_image EGL_KHR_gl_texture_2D_image EGL_KHR_gl_texture_3D_image EGL_KHR_gl_texture_cubemap_image EGL_KHR_image EGL_KHR_image_base EGL_KHR_image_pixmap EGL_KHR_no_config_context EGL_KHR_reusable_sync EGL_KHR_surfaceless_context EGL_EXT_pixel_format_float EGL_KHR_wait_sync EGL_MESA_configless_context EGL_MESA_drm_image EGL_MESA_image_dma_buf_export EGL_MESA_query_driver EGL_WL_bind_wayland_display "
===================================
OpenGL ES 2.x information:
  version: "OpenGL ES 3.1 Mesa 19.3.2"
  shading language version: "OpenGL ES GLSL ES 3.10"
  vendor: "Broadcom"
  renderer: "V3D 4.2"
  extensions: "GL_EXT_blend_minmax GL_EXT_multi_draw_arrays GL_EXT_texture_format_BGRA8888 GL_OES_compressed_ETC1_RGB8_texture GL_OES_depth24 GL_OES_element_index_uint GL_OES_fbo_render_mipmap GL_OES_mapbuffer GL_OES_rgb8_rgba8 GL_OES_standard_derivatives GL_OES_stencil8 GL_OES_texture_3D GL_OES_texture_float GL_OES_texture_half_float GL_OES_texture_half_float_linear GL_OES_texture_npot GL_OES_vertex_half_float GL_EXT_texture_sRGB_decode GL_OES_EGL_image GL_OES_depth_texture GL_OES_packed_depth_stencil GL_EXT_texture_type_2_10_10_10_REV GL_OES_get_program_binary GL_APPLE_texture_max_level GL_EXT_discard_framebuffer GL_EXT_read_format_bgra GL_EXT_frag_depth GL_NV_fbo_color_attachments GL_OES_EGL_image_external GL_OES_EGL_sync GL_OES_vertex_array_object GL_EXT_occlusion_query_boolean GL_EXT_texture_rg GL_EXT_unpack_subimage GL_NV_draw_buffers GL_NV_read_buffer GL_NV_read_depth GL_NV_read_depth_stencil GL_NV_read_stencil GL_EXT_draw_buffers GL_EXT_map_buffer_range GL_KHR_debug GL_KHR_texture_compression_astc_ldr GL_OES_depth_texture_cube_map GL_OES_required_internalformat GL_OES_surfaceless_context GL_EXT_color_buffer_float GL_EXT_sRGB_write_control GL_EXT_separate_shader_objects GL_EXT_shader_implicit_conversions GL_EXT_shader_integer_mix GL_EXT_base_instance GL_EXT_compressed_ETC1_RGB8_sub_texture GL_EXT_draw_elements_base_vertex GL_EXT_primitive_bounding_box GL_EXT_shader_io_blocks GL_EXT_texture_border_clamp GL_EXT_texture_norm16 GL_KHR_context_flush_control GL_NV_image_formats GL_OES_draw_elements_base_vertex GL_OES_primitive_bounding_box GL_OES_shader_io_blocks GL_OES_texture_border_clamp GL_OES_texture_stencil8 GL_OES_texture_storage_multisample_2d_array GL_EXT_buffer_storage GL_EXT_float_blend GL_KHR_no_error GL_KHR_texture_compression_astc_sliced_3d GL_OES_EGL_image_external_essl3 GL_OES_shader_image_atomic GL_MESA_shader_integer_functions GL_KHR_parallel_shader_compile GL_MESA_framebuffer_flip_y GL_EXT_texture_query_lod "
===================================

[ardera]

Sorry, I thought I replied to this thread already.

I couldn't reproduce the problem in my testing, even when I used a HDMI monitor and changed my /boot/cmdline.txt to match yours exactly.

kmscube with /dev/dri/card0 works:

Yeah, it's always one of the cards in /dev/dri that works. For me /dev/dri/card1 is the working one. Though this shouldn't really matter as flutter-pi ignores non-working cards and tries to find the first working one.

Can you try this for me?

1. $ sudo bash
2. # echo 0x1ff > /sys/module/drm/parameters/debug
3. # exit
4. run flutter-pi (you can also try running it as root)
5. $ sudo bash
6. # echo 0x0 > /sys/module/drm/parameters/debug
7. # exit
8. send me the complete contents of /var/log/syslog

[mateusz-grzegorzek]

syslog: syslog
command line output: cmdline

I don't know why but the DRM bug is gone (replaced by Dart Error: Can't load Kernel binary)
Could it be related to the execution of this command:
sudo /usr/bin/kmscube -D /dev/dri/card0
?

[ardera]

replaced by Dart Error: Can't load Kernel binary

Make sure your engine binaries and flutter SDK are up to date.

Could it be related to the execution of this command:
sudo /usr/bin/kmscube -D /dev/dri/card0

No, that's not possible. Did you reboot between the sudo apt upgrade and the invocation of flutter-pi though? The changes to kernel & firmware only take effect after reboot.

[mateusz-grzegorzek]

DRM bug related to this issue is fixed probably by executing commands sudo apt update && sudo apt upgrade and rebooting RPi, so I created a new issue related to Invalid SDK hash:
Invalid SDK hash