does it work on arm / RaspBerry Pi?

[lpt2007]

Is this working on arm cpu like raspberry pi?

[mviereck]

Probably it will work. Basically you need bash, X and Docker on arm, and afaik they all exist e.g. in Raspian. I did not test it myself because I dont have a Raspberry Pi.

I assume docker images will have to be based on arm images, too. Most Docker images (and all of x11docker examples) are based on amd64.

If you give it a try, I'd quite appreciate your feedback!

[lpt2007]

I will gladly try if you give me how to directions.

[eine]

Hi @lpt2007! Do you actually have an ARM device with docker installed and running? Should it be an aarch64, you can try:

x11docker aptman/dbhi:bionic-aarch64 gtkwave

Otherwise, please let us know what did you achieve so far.

[lpt2007]

Yes, I have docker up and running on my arm device - os raspbian (debian stretch 9.6). But I don't know what you mean with that?

x11docker aptman/dbhi:bionic-aarch64 gtkwave

[mviereck]

Do you run raspbian with an X server / a graphical interface?
Install x11docker in raspbian. The command x11docker aptman/dbhi:bionic-aarch64 gtkwave should download image aptman/dbhi:bionic-aarch64 and start the application gtkwave in docker.

If you have arch32 instead of arch64, you can e.g. try to build an image with this Dockerfile:

FROM arm32v7/debian
RUN apt-get update
RUN apt-get install xterm

Run the image with x11docker imagename xterm.

[lpt2007]

Yes I have raspbian with X server and graphical interface.

But I don't have x11docker. Command not found?

I have this cpu:
pi@raspberrypi:~ $ cat /proc/cpuinfo
processor : 0
model name : ARMv7 Processor rev 4 (v7l)
BogoMIPS : 38.40
Features : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm crc32
CPU implementer : 0x41
CPU architecture: 7
CPU variant : 0x0
CPU part : 0xd03
CPU revision : 4

processor : 1
model name : ARMv7 Processor rev 4 (v7l)
BogoMIPS : 38.40
Features : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm crc32
CPU implementer : 0x41
CPU architecture: 7
CPU variant : 0x0
CPU part : 0xd03
CPU revision : 4

processor : 2
model name : ARMv7 Processor rev 4 (v7l)
BogoMIPS : 38.40
Features : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm crc32
CPU implementer : 0x41
CPU architecture: 7
CPU variant : 0x0
CPU part : 0xd03
CPU revision : 4

processor : 3
model name : ARMv7 Processor rev 4 (v7l)
BogoMIPS : 38.40
Features : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm crc32
CPU implementer : 0x41
CPU architecture: 7
CPU variant : 0x0
CPU part : 0xd03
CPU revision : 4

Hardware : BCM2835
Revision : a02082
Serial : 0000000015fde596

[mviereck]

But I don't have x11docker. Command not found?

Well, to use x11docker you need to install x11docker first. Look at installation instructions in the README.

[lpt2007]

I installed x11docker successfully.

Now I try to run program with it like you say:
x11docker aptman/dbhi:bionic-aarch64 gtkwave

And I get this error:

[mviereck]

It looks like x11docker has an issue to run xterm. It would do that to ask for pulling the docker image.
Please try to pull the image first before running x11docker:

docker pull aptman/dbhi:bionic-aarch64

However, if I understand your /proc/cpuinfo correctly, you have a 32-bit arm cpu. For that reason the image may fail anyway.
In that case, try to build a 32-bit-image, e.g. with this Dockerfile:

FROM arm32v7/debian
RUN apt-get update
RUN apt-get install xterm

[eine]

This might be slightly off-topic, but I hope @mviereck will agree with discussing it.

I thought that docker is not available on 32-bit systems. See https://docs.docker.com/install/linux/docker-ce/binaries/. Certainly, I have successfully used docker on several ARMv8 devices (ROCK960, Pine64, and Raspberry Pi 3 B+), but I have always used 64-bit OSs. I have had some issues with outdated kernel versions, indeed.

Hence, I wonder how is it possible to install docker on a BCM2835 device (which should be either a Raspberry Pi 2 or a Zero). @lpt2007, I'd be so glad if your could tell us some details about the context/procedure:

• Is it a 32-bit OS?
• Did you install docker with apt or apt-get? Did you add any repository to do so?
• Is the package named docker-io or docker-ce?

---

About this issue, you should try with a arm32v7/debian based image, as suggested by @mviereck.

[lpt2007]

Hi,

Sorry for delay:
I am using this model of rpi:
https://www.raspberrypi.org/products/raspberry-pi-3-model-b/

It has Quad Core 1.2GHz Broadcom BCM2837 64bit CPU.

but I think raspbian software is 32bit.

I installed docker with this command:
curl -fsSL get.docker.com -o get-docker.sh && sh get-docker.sh
and add pi user to docker group
sudo usermod -aG docker pi

I also installed docker on raspberry pi 2 with no problem.

For example: send me x11docker command to start firefox.

[mviereck]

For example: send me x11docker command to start firefox.

You need a Docker image with firefox. Steps for creation:

• Create a folder for Dockerfiles, e.g. ~/docker.
• Create a subfolder for firefox Dockerfile: ~/docker/firefox
• Create a file ~/docker/firefox/Dockerfile with this content:

FROM arm32v7/debian
RUN apt-get update
RUN apt-get install -y firefox
CMD firefox

• Create Docker image with docker build -t firefox ~/docker/firefox
• Run image with x11docker firefox

[lpt2007]

I get error when running docker build:

pi@raspberrypi:~ $ docker build -t firefox /home/pi/docker/firefox
Sending build context to Docker daemon  2.048kB
Step 1/4 : FROM arm32v7/debian
 ---> 31b88b200ce6
Step 2/4 : RUN apt-get update
 ---> Running in 46bec2cdcccb
Get:1 http://security-cdn.debian.org/debian-security stretch/updates InRelease [94.3 kB]
Ign:2 http://cdn-fastly.deb.debian.org/debian stretch InRelease
Get:3 http://cdn-fastly.deb.debian.org/debian stretch-updates InRelease [91.0 kB]
Get:4 http://cdn-fastly.deb.debian.org/debian stretch Release [118 kB]
Get:5 http://cdn-fastly.deb.debian.org/debian stretch Release.gpg [2434 B]
Get:6 http://security-cdn.debian.org/debian-security stretch/updates/main armhf Packages [453 kB]
Get:7 http://cdn-fastly.deb.debian.org/debian stretch-updates/main armhf Packages [5108 B]
Get:8 http://cdn-fastly.deb.debian.org/debian stretch/main armhf Packages [6919 kB]
Fetched 7682 kB in 24s (316 kB/s)
Reading package lists...
Removing intermediate container 46bec2cdcccb
 ---> 93997b1246f0
Step 3/4 : RUN apt-get install -y firefox
 ---> Running in d29e1fd6c3ff
Reading package lists...
Building dependency tree...
Reading state information...
Package firefox is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

E: Package 'firefox' has no installation candidate
The command '/bin/sh -c apt-get install -y firefox' returned a non-zero code: 100

[eine]

Firefox is not named firefox in Debian. Try iceweasel or firefox-esr:

• https://unix.stackexchange.com/questions/239757/package-firefox-is-not-available
• https://wiki.debian.org/Iceweasel

[mviereck]

Firefox is not named firefox in Debian. Try iceweasel or firefox-esr:

Oh, yes, I forgot about that. Change the Dockerfile to:

FROM arm32v7/debian
RUN apt-get update
RUN apt-get install -y firefox-esr
CMD firefox-esr

[lpt2007]

Finally a success.

I try to run kodi like this:
make folder /home/pi/docker
make sub-folder under it /home/pi/docker/kodi
make file called Dockerfile under kodi folder /home/pi/docker/kodi/Dockerfile

FROM arm32v7/debian
RUN apt-get update
RUN apt-get install -y kodi
CMD kodi

create image: docker build -t kodi /home/pi/docker/kodi

Run image with x11docker kodi

KODI started ok, but using a lot of CPU.

Can something be done about that?

[mviereck]

KODI started ok, but using a lot of CPU.
Can something be done about that?

Add option --gpu for hardware acceleration: x11docker --gpu kodi

Finally a success.

:-) Good to know that x11docker also works on arm / Raspberry. Thank you for testing!

[lpt2007]

:-) Good to know that x11docker also works on arm / Raspberry. Thank you for testing!

Anytime.

I try to run with --gpu. I still have high cpu usage all forur cpu-s about 90%.

error:

[mviereck]

Can you somehow provide terminal output as text instead of an image? It is hard to read, and I donT recognice the error.

Does your Raspberry have a GPU at all? If yes, there should be some files in /dev/dri.
Please show me the output of: lspci | grep -i vga

[lpt2007]

Does your Raspberry have a GPU at all?

Yes. GPU: Broadcom VideoCore IV

Please show me the output of: lspci | grep -i vga

command not working:

pi@raspberrypi:~ $ lspci | grep -i vga
pcilib: Cannot open /proc/bus/pci
lspci: Cannot find any working access method.

[lpt2007]

Maybe arm32v7/debian is not made for rpi?

Maybe because of that kodi is taking a lot of resurces.

Can I somehow build docker image from raspbian I running right now? I try to install & run kodi on it and is working perfectly.

[eine]

I am using this model of rpi: raspberrypi.org/products/raspberry-pi-3-model-b

It has Quad Core 1.2GHz Broadcom BCM2837 64bit CPU.

but I think raspbian software is 32bit.

Just for clarification. ARMv8 devices, such as BCM2837, support two architectures: ARMv7 (32-bit) and ARMv8 (64-bit). Since Raspbian is meant to work in any RPi, it is compiled for ARMv7 only. That's why /proc/cpuinfo returns BCM2835: the ARMv8 subset is hidden for Raspbian. As a result, 64-bit features are not available in RPi 3 when Raspbian is used. Also, this is why arm32v7 docker images must be used as a base.

However, should any 64-bit OS be used in the RPi 3 (such as Fedora, Arch or Alpine), images based on arm64v8 would work. Still, I wonder if arm32v7 images can be executed on a 64-bit OS.

curl -fsSL get.docker.com -o get-docker.sh && sh get-docker.sh
and add pi user to docker group
sudo usermod -aG docker pi

Thanks! I used to follow this: https://docs.docker.com/install/linux/docker-ce/debian/ But it does not have a section for Raspbian, although binaries exist: https://download.docker.com/linux/

Now I used curl -fsSL get.docker.com | sh - and it worked like a charm.

:-) Good to know that x11docker also works on arm / Raspberry. Thank you for testing!

Do you think it'd be interesting to keep a file/table where contributors can report which platforms they tried x11docker at?

Please show me the output of: lspci | grep -i vga

command not working:

The Raspberry Pi is based on a system-on-chip (SoC), so there is probably no PCI bus at all. See https://en.wikipedia.org/wiki/File:ARMSoCBlockDiagram.svg for an example of how these devices look like.

Maybe arm32v7/debian is not made for rpi?

I think that arm32v7 and arm64v8 images have been developed precisely for RPi and single-board-computers (SBCs) in the context of IoT. So, the context fits perfectly.

However, on the one hand, the main purpose of SBCs in general, and RPis in particular, is not to execute resource hungry graphical applications. It can be done, for sure. But you should expect performance issues.

Maybe because of that kodi is taking a lot of resurces.

Kodi is probably taking a lot of resources because it needs to. If you tried kodi outside of a docker container and it works with less resources, then we should focus on the constraints that the docker container imposes. The main constraint can be GPU acceleration, as @mviereck pointed above. We should help clarify:

• Is GPU acceleration available in Raspbian?
• Is the GPU being used when Kodi is executed natively?
• Is GPU acceleration available inside the container?
• Is the GPU being used when Kodi is executed inside the container?

Can I somehow build docker image from raspbian I running right now? I try to install & run kodi on it and is working perfectly.

I'd say that the GPU is being used in raspbian, but not inside the container. If so, making some arm32v7/raspbian won't make any difference. This is specially so because Raspbian is based on Debian. However, once we guess how to share the GPU, some files from Raspbian (such as drivers) might need to be added to the container.

[eine]

@lpt2007 did you try this?

FROM arm32v7/debian
RUN apt-get update
RUN apt-get install -y firefox-esr
CMD firefox-esr

or did you try kodi directly?

FROM arm32v7/debian
RUN apt-get update
RUN apt-get install -y kodi
CMD kodi

I can successfully start kodi (and I can reproduce the performance issue), but firefox seems not to work.

[mviereck]

We should help clarify:

• Is GPU acceleration available in Raspbian?

@lpt2007 Please show the output of: ls -l /dev/dri
This folder is shared with the container and should give it access to the GPU hardware.

However, once we guess how to share the GPU, some files from Raspbian (such as drivers) might need to be added to the container.

Add this line to the Dockerfile, it may add some drivers:

RUN apt-get install -y mesa-utils mesa-utils-extra

Do you think it'd be interesting to keep a file/table where contributors can report which platforms they tried x11docker at?

Currently I would only know of amd64 and now arm/RaspBerry. I am not sure what else could be of interest.

[eine]

Please show the output of: ls -l /dev/dri

This does not exist in 2018-11-13-raspbian-stretch.

Currently I would only know of amd64 and now arm/RaspBerry. I am not sure what else could be of interest.

There are multiple ARM devices with different GPUs. Since x11docker is quite focused on GUI applications, I think it might be interesting to track with which distributions and boards we can enable --gpu.

I could run tests on RPi 2 B, RPi 3 B+, PYNQ, ROCK960, Pine64 and Orange Pi Plus2.

[lpt2007]

@lpt2007 did you try this?

FROM arm32v7/debian
RUN apt-get update
RUN apt-get install -y firefox-esr
CMD firefox-esr

I try but not working?

[eine]

With the kodi Dockerfile above:

./x11docker --gpu kodi
x11docker note: Using X server option --hostdisplay

x11docker note: To allow GPU acceleration (option --gpu) with --hostdisplay,
  x11docker will allow trusted cookies. That enables option --clipboard, too.

x11docker note: To allow --hostdisplay with trusted cookies,
  x11docker must share host IPC namespace with container (option --hostipc)
  to allow shared memory for X extension MIT-SHM.

x11docker note: To allow protection against X security leaks,
  please install one or more of:
    xpra, Xephyr, nxagent, weston+Xwayland, kwin_wayland+Xwayland or Xnest,
  or run a second Xorg server with option --xorg.

x11docker WARNING: Option --hostdisplay with trusted cookies provides
      QUITE BAD CONTAINER ISOLATION !
  Keylogging and controlling host applications is possible!
  It is recommended to use another X server option like --xpra or --nxagent.

x11docker WARNING: Option --hostipc degrades container isolation.
  IPC namespace remapping is disabled.

x11docker WARNING: Option --gpu degrades container isolation.
  Container gains access to GPU hardware.
  This allows reading host window content (palinopsia leak)
  and GPU rootkits (compare proof of concept: jellyfish).

/usr/lib/arm-linux-gnueabihf/kodi/kodi-xrandr: Failed to get size of gamma for output default
libEGL warning: DRI2: failed to authenticate
/usr/lib/arm-linux-gnueabihf/kodi/kodi-xrandr: Failed to get size of gamma for output default

I get the same output after adding these mesa-utils mesa-utils-extra.

[mviereck]

This does not exist in 2018-11-13-raspbian-stretch.

In that case I don't know how to provide GPU access at all. On amd64 this folder is the key.

There are several raspbian images on docker hub. Maybe its worth a try to change the base image in Dockerfile to FROM schachr/raspbian-stretch

libEGL warning: DRI2: failed to authenticate

This one looks interesting. It is a GPU related error. However, I've never heard of any authentication to access the GPU. X access is allowed with XAUTHORITY cookie, and GPU access is allowed with group video.

[lpt2007]

I also try with raspbian/stretch:

FROM raspbian/stretch
RUN apt-get update
RUN apt-get install -y kodi
CMD kodi

But kodi won't start. Here is log file:
x11docker.log

[mviereck]

Does it also work without --privileged?

If audio is lost without --privileged, add option --alsa

x11docker --gpu --alsa kodi

How to get keyboard working under kodi?

That is strange, I have no idea why the keyboard is lost yet.

[lpt2007]

I try to play movie from my network and audio sims to be ok but picture is not ok (squares on picture, choppy picture). I think is not cpu problem, because is very low when I playing movie.

Any idea?

[lpt2007]

x11docker --gpu --alsa kodi

No kodi won't start without --privileged

[mviereck]

No kodi won't start without --privileged

It does not start at all? That's odd, because your previous image based on arm32v7/debian did run without --privileged.

I try to play movie from my network and audio sims to be ok but picture is not ok (squares on picture, choppy picture). I think is not cpu problem, because is very low when I playing movie.

Can you compare with kodi directly installed on the RaspBerry (not in Docker image)? Just to clarify if the issue is related to Docker. It might be as well a general network issue.

[eine]

$ x11docker --gpu -i --user=root -- --pid=host --privileged -- <image> bash

resin/armv7hf-debian

It is based on Jessie, so kodi is not available.

balenalib/armv7hf-debian

root@ad30d9a3384c:~# kodi
/usr/lib/arm-linux-gnueabihf/kodi/kodi-xrandr: Failed to get size of gamma for output default
libEGL warning: DRI2: failed to authenticate
libEGL warning: DRI2: failed to open swrast (search paths /usr/lib/arm-linux-gnueabihf/dri:${ORIGIN}/dri:/usr/lib/dri)
terminate called after throwing an instance of 'std::logic_error'
  what():  basic_string::_M_construct null not valid
Aborted (core dumped)
Crash report available at /fakehome/root/kodi_crashlog-20190120_232325.log

root@ad30d9a3384c:~# apt install libraspberrypi0 -y
Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Unable to locate package libraspberrypi0

kodi is available, but it does not work. libraspberrypi0 is not available.

raspbian/stretch

/usr/bin/kodi: 1: /usr/bin/kodi: fbset: not found
/usr/bin/kodi: 46: /usr/bin/kodi: tvservice: not found
/usr/bin/kodi: 60: /usr/bin/kodi: tvservice: not found

Both kodi and libraspberrypi0 are available.

It complains about fbset and tvservice, but it works.

schachr/raspbian-stretch

/usr/lib/arm-linux-gnueabihf/kodi/kodi-xrandr: Failed to get size of gamma for output default
libEGL warning: DRI2: failed to authenticate

kodi is available, and it does work. libraspberrypi0 is not available.

armv7/debian

root@0358016a4b96:~# kodi
/usr/lib/arm-linux-gnueabihf/kodi/kodi-xrandr: Failed to get size of gamma for output default
libEGL warning: DRI2: failed to authenticate
/usr/lib/arm-linux-gnueabihf/kodi/kodi-xrandr: Failed to get size of gamma for output default

kodi is available, and it does work. libraspberrypi0 is not available.

[eine]

Little update. I could install libraspberrypi0 on armv7/debian:

Add these to /etc/apt/sources.list:

deb http://archive.raspbian.org/raspbian stretch main contrib non-free rpi firmware
deb http://archive.raspberrypi.org/debian stretch main

Then:

apt install -y wget gnupg
wget https://archive.raspbian.org/raspbian.public.key -O - | apt-key add -
wget http://archive.raspberrypi.org/debian/raspberrypi.gpg.key -O - | apt-key add -
apt update -y
apt install -y libraspberrypi0

However, kodi is still using the CPU. I tried adding the packages mentioned in hypriot/x11-on-HypriotOS#2 too. Still the same. I think I am missing some command to reload something after the packages are installed.

[lpt2007]

However, kodi is still using the CPU.
On my solution cpu is ok.

But I can't get rid of choppy video:

I run this command:
x11docker --gpu --homedir /home/pi/docker/raspbian/ -- --privileged -- kodi-new

[mviereck]

But I can't get rid of choppy video:

Maybe you have missed my comment above:
Can you compare with kodi directly installed on the RaspBerry (not in Docker image)? Just to clarify if the issue is related to Docker. It might be as well a general network issue.

If network transfer in general is an issue, x11docker can't do anything about it. If the choppy video only appears within docker, but not with a native kodi installation, we can look for a better docker setup.

[lpt2007]

Maybe you have missed my comment above:
Can you compare with kodi directly installed on the RaspBerry (not in Docker image)? Just to clarify if the issue is related to Docker. It might be as well a general network issue.

Directly runs ok.

[mviereck]

Directly runs ok.

ok. I have no idea yet for a different command setup. But maybe installing some X video libraries helps. Add this line to the Dockerfile and build again:

RUN apt-get install -y libxv1 libxvmc1

[eine]

1138-4EB: However, kodi is still using the CPU.

@lpt2007: On my solution cpu is ok.

I know. As commented in #100 (comment), I could reproduce your setup based on raspbian/stretch. However, I am now concerned about being able to reproduce it with any other base image. This is the first step to later support --gpu in Fedora, Arch, Alpine, etc.

But maybe installing some X video libraries helps.

These might also help: libva-egl1 libegl1-mesa libegl1-mesa-drivers gegl. See hypriot/x11-on-HypriotOS#2.

[lpt2007]

ok. I have no idea yet for a different command setup. But maybe installing some X video libraries helps. Add this line to the Dockerfile and build again:

RUN apt-get install -y libxv1 libxvmc1

Not working, no diference

[mviereck]

Not working, no diference

Please try with suggestions from @1138-4eb, too:

RUN apt-get install -y libxv1 libxvmc1 libva-egl1 libegl1-mesa libegl1-mesa-drivers gegl

[lpt2007]

RUN apt-get install -y libxv1 libxvmc1 libva-egl1 libegl1-mesa libegl1-mesa-drivers gegl

After I add this command in Dockerfile, video file won't start

[lpt2007]

I wanna try run video from usb key. Please help mi with x11docker command.

I try like this, but not working:
x11docker --gpu --homedir /home/pi/docker/raspbian/ -- --privileged -- "-v /mnt:/mnt:ro" kodi-raspbian

[eine]

After I add this command in Dockerfile, video file won't start

Is any error shown in the terminal at all?

Also, are you trying different video files in different formats or just a single one?

[lpt2007]

After I add this command in Dockerfile, video file won't start

I restart sistem and now vide file start, but result is same - choppy video.

Also, are you trying different video files in different formats or just a single one?

All video are same.

[eine]

All video are same.

You might try with different video files in different formats (codecs). Also, it might be worth trying VLC instead of Kodi.

[lpt2007]

You might try with different video files in different formats (codecs). Also, it might be worth trying VLC instead of Kodi.

I have a lot of different file, and they are all choppy

I wanna try run video from usb key. Please help mi with x11docker command.

I try like this, but not working:
x11docker --gpu --homedir /home/pi/docker/raspbian/ -- --privileged -- "-v /mnt:/mnt:ro" kodi-raspbian

Do you know how to mount usb flash drive under container?

[mviereck]

Do you know how to mount usb flash drive under container?

Either:

x11docker --gpu --homedir /home/pi/docker/raspbian/ -- --privileged -v /mnt:/mnt:ro -- kodi-raspbian

or:

x11docker --gpu --homedir /home/pi/docker/raspbian/ --sharedir /mnt:ro -- --privileged -- kodi-raspbian

[lpt2007]

Thanks @mviereck.

I already figured out:
x11docker --xpra --gpu --homedir /home/pi/docker/raspbian/ --sharedir /mnt/ -- --privileged -- kodi-raspbian

But picture on video files still choppy :(

[lpt2007]

Also, it might be worth trying VLC instead of Kodi.

How can I do that?

[mviereck]

Also, it might be worth trying VLC instead of Kodi.

How can I do that?

Install vlc in Dockerfile, play some videos with it and check if they are choppy, too.

[mviereck]

Let's continue the discussion in #105.
This thread is too long to be readable anymore.