Raspberry Pi 4 Ubuntu Server / Desktop 18.04.4 Image

Fine, I'll do it myself
No Official Pi 4 Support? Fine, I’ll do it myself

UPDATE 12/5/2020 – If you are looking for installation instructions or USB booting instructions for Ubuntu 20.04 / 20.10 check out my new updated guide here

This is a unofficial distribution of Ubuntu Server 18.04.4 for Raspberry Pi 4. It is provided with the purpose of letting us all play with the new Pi 4’s new increased RAM and other capabilities until Ubuntu’s repositories are updated with support for the newest Pi.

I want to thank all the commenters on this article and my Ubuntu Server Installation Guide for Raspberry Pi 4 who have contributed a ton of fixes to help get the image to the point it is at now! I also want to thank anyone who has reported issues or pull requests on the official GitHub page. This has truly been a collaborative effort and I expect it will continue to be until official support is released.

Features

  • Fully 64-bit kernel and userspace environment
  • Updates normally via apt dist-upgrade from the official Ubuntu repositories
  • Raspberry Pi userland utilities included (vcgencmd, dtoverlay, etc.)
  • raspi-config utility included (good for enabling I2C, SPI, etc.)
  • Uses the official 4.19.y Raspbian linux kernel built with arm64 flags
  • Firmware updates from the Raspbian image and the RPi-Distro/firmware-nonfree repository
  • 3D video hardware acceleration support via vc4-fkms-v3d stack. Videos / games are giving very high and smooth FPS.
  • Includes kernel headers and the full kernel source tree used to build a kernel with your own custom flags (/usr/src/ directory)
  • Can build out-of-tree and DKMS modules
  • Full desktop support available via apt install kubuntu-desktop, xubuntu-desktop, xfce4, mate-desktop-environment, etc.
  • 5 GHz WiFi channel support
  • Working Bluetooth and WiFi
  • KVM virtualization support
  • Update script provided to update kernels/firmware/modules

GitHub Project Location

The image and source code to build the image are open source and freely available on GitHub:

GitHub – TheRemote – Ubuntu-Server-raspi4-unofficial

Raspberry Pi 4
Raspberry Pi 4

The Raspberry Pi 4 is available in different memory configurations all the way up to 8 GB. It’s about the size of a credit card and uses an extremely low amount of power making it ideal for all sorts of projects and ideas!

Links: AliExpress*, Amazon.com*, Amazon.ca*, Amazon.com.au*, Amazon*.co.jp*, Amazon.co.uk*, Amazon.de*, Amazon.es*, Amazon.fr*, Amazon.it*, Amazon.nl*, Amazon.pl*, Amazon.se*, Amazon.sg*

Raspberry Pi 400 Kit
Raspberry Pi 400 Kit

The Raspberry Pi 400 kit includes everything you need for a full Pi 400 desktop build. The Pi 400 is the fastest Raspberry Pi ever released and comes in the form factor of a keyboard!

Links: AliExpress*, Amazon.com*, Amazon.ca*, Amazon.com.au*,Amazon.co.jp*, Amazon.co.uk*, Amazon.de*, Amazon.es*, Amazon.fr*, Amazon.it*, Amazon.nl*, Amazon.pl*, Amazon.se*, Amazon.sg*

Update Bootloader Firmware First (using Raspberry Pi OS)!

One important new thing to understand about the Raspberry Pi 4 vs. older Pis is that the 4 now has real onboard firmware that is on a special chip separate from everything else. Older Raspberry Pis did not have real onboard firmware and loaded all of their firmware from the SD card every single boot.

Before you install this image you should run Raspbian and install the latest firmware using this command:

sudo apt-get update && sudo apt-get dist-upgrade -y
sudo rpi-update

Next we are going to check for bootloader updates. We do this using the new rpi-eeprom utility. The following command will check for updates:

sudo rpi-eeprom-update -a

For a lot more information about the new rpi-eeprom bootloader utility make sure you check out my Raspberry Pi 4 Bootloader Guide.

If you have multiple SD cards or storage devices laying around it is a good idea to designate one of them as the “Official Raspbian Firmware Updater” card. Using this method you can periodically swap out the card and install the latest firmware updates to your Pi 4 and then switch right back to Ubuntu.

Preinstalled Image Download / Instructions

To download the precompiled image see the releases section located at GitHub – TheRemote – Ubuntu-Server-raspi4-unofficial – Releases

The file you are looking for on the releases page is ubuntu-18.04.4-preinstalled-server-arm64+raspi4.img.xz. Download this file and extract the .img file from inside. Use the free and awesome 7-zip if you are on Windows to extract the .img file.

Now burn the .img file using your favorite program. I use Win32DiskImager. Now insert your SD card / storage device into the Pi and start it up!

Username: ubuntu

Password: ubuntu

Upon logging in for the first time you will be required to change the default password to something else. Once you have done that log back in and you should be all set!

Updates

Using apt-get

First and foremost 99% of your updates will be coming from Ubuntu’s official repositories directly from apt as it would with any official image. The only things set on package hold (using apt-mark hold flash-kernel linux-raspi2 linux-image-raspi2 linux-headers-raspi2 linux-firmware-raspi2) to prevent them from overwriting the firmware already on the image. If you wish, you may apt-mark unhold those same packages and you will be 100% official Ubuntu. Your installation will probably immediately break if you do it now, but when the RPI 4 support is backported this is how you can change back to theirs.

Included Updater

I have also included an updater that will give you the latest kernel/firmware/modules/fixes that are included in each release. If Ubuntu’s 18.04.4 update servers get working firmware for the Raspberry Pi 4 I will change the update script to remove the apt-mark holds on the Raspberry Pi firmware package in apt and close the project down (leaving this here for people to learn from to hack an unsupported device into their own distros, or until I do it again on the next Pi release!)

Usage

If you have V18 or later of the image the updater is located at /home/Updater.sh. Type/paste:

sudo ./Updater.sh

If you have an older version of the image or need to manually update your Updater script, use the following commands:

wget https://raw.githubusercontent.com/TheRemote/Ubuntu-Server-raspi4-unofficial/master/Updater.sh
chmod +x Updater.sh
sudo ./Updater.sh 

Updates to the kernel/firmware/fixes to common problems will be provided as long as there is interest.

Forcing Update

If you want to force the update (if you suspect/know something went wrong during an update, or you are troubleshooting, etc) use the following commands:

cd /home 
sudo rm /etc/imgrelease 
sudo ./Updater.sh

These commands remove a small file that contains the version of the image you have installed. This will cause the updater to allow you update again.

Install Full Ubuntu Desktop Version

To install the full version of Ubuntu Desktop use one of the following:

  • sudo apt-get update && sudo apt-get dist-upgrade -y && sudo apt-get install ubuntu-desktop -y
  • sudo apt-get update && sudo apt-get dist-upgrade -y && sudo apt-get install xubuntu-desktop -y
  • sudo apt-get update && sudo apt-get dist-upgrade -y && sudo apt-get install kubuntu-desktop -y

The xubuntu variant is lighter than the kubuntu variant but either one will need to download and install thousands of packages to complete the upgrade. This can obviously take quite a long time. How long it will take depends on your internet connection and the quality of your storage device.

Running this task overnight or when you have an errand to go run is definitely advised!

Performance

Storage

Beyond keeping your firmware and distribution up to date there is only one thing that sets apart one Ubuntu installation on a Pi from any other: your storage device. The difference between a low end to high end SD card can be a 2-3x performance, and the difference between a SD card and a solid state drive is a whole order of magnitude.

To help people know whether they have high performance storage I made the Raspberry Pi Storage Benchmark that will give you a performance score. Running the benchmark is really easy. Paste or type the following commands:

curl https://raw.githubusercontent.com/TheRemote/PiBenchmarks/master/Storage.sh | sudo bash

The storage benchmark will run several well known and respected benchmarks such as iozone and fio and calculate a score for your device.

Most importantly, to compare your score or if you want to just view other benchmark submissions check out the full results of all submissions in a searchable/sortable table at the Raspberry Pi Storage Benchmark Results Page.

Using USB Storage / Solid State Drive (SSD)

UPDATE 12/4/2020 – These instructions won’t work with Ubuntu 20.04 and 20.10. To USB boot those versions check out my new Ubuntu 20.04 / 20.10 USB booting guide here

Right now the Pi 4 still lacks USB boot support. However, you can still do it by using the trick of having a SD card that you use as a bootloader only and have the rootfs on your USB storage. This is kind of a waste of a SD card but it’s definitely worth it as it allows you to hit those full sweet sweet USB 3.0 transfer speeds right now without waiting until the USB booting firmware update is released.

Using a solid state on the Ubuntu image is incredibly easy (even easier than Raspbian). Here’s the instructions:

  • Download the Desktop or Server image above and write it to your SD card
  • Navigate to the /boot drive on your SD card and open cmdline.txt
  • Change the part of the line that says root=/dev/mmcblk0p2 to root=/dev/sda2
  • Now burn the image again to your SSD
  • Plug in both the SSD and Micro SD and boot up the Pi

See my Raspberry Pi 4 USB Booting Guide for more information on USB booting / how this works / how to set it up.

Known Issues / Fixes

This section will be updated with known issues/fixes as people test the image and give feedback.

No display (HDMI)

If you have no display on your HDMI monitor you may need to toggle some options in /boot/config.txt. Put the SD card back in your computer and go to config.txt on the boot partition.

Here are some examples of good ones to try to get your display working:

#uncomment if you get no picture on HDMI for a default "safe" mode
#hdmi_safe=1

#uncomment if hdmi display is not detected and composite is being output
#hdmi_force_hotplug=1

#uncomment to force a specific HDMI mode (this will force VGA)
#hdmi_group=1
#hdmi_mode=1

#uncomment to force a HDMI mode rather than DVI. This can make audio work in DMT (computer monitor) modes
#hdmi_drive=2

#uncomment for composite PAL
#sdtv_mode=2

Which option or options may fix it for you is impossible to say. Everyone’s display is different so you may have to try a few times before you get it.

Kubuntu-Desktop display issues

If your windows are not drawing correctly in Kubuntu (missing window borders, black screens in windows, etc.) then you need to disable compositing.

Use the shortcut Alt + Shift + F12 to disable the compositor and everything will draw normally. Now go into the Settings app and go to the “Compositor” section and uncheck “Enable compositor at startup” to prevent it from turning back on when you reboot.

This has been resolved in V16+.

Build Instructions

If you don’t want to use the precompiled binaries you can also build it yourself with the provided build script!

The build script is meant to be ran in a *throwaway* Ubuntu 18.04.4 Virtual Machine (VM). Here are the reasons you shouldn’t ignore this:

  • Absolutely no steps have been taken to make the process “secure” or “safe” for your main machine
  • It assumes the home directory is safe to build in (it’s not on a main system)
  • It installs hundreds of development packages that you only need to build the image (would bog down a main system)
  • It chroots into at least 4 different images during the build and chroots leak (causing instability/security concerns)
  • If things go wrong with the type of commands used in the script your system can get borked *real quick* (like instantly)

Now assuming you have your fresh throwaway VM ready download the build script:

cd ~
wget https://raw.githubusercontent.com/TheRemote/Ubuntu-Server-raspi4-unofficial/master/BuildPiKernel64bit.sh
chmod +x BuildPiKernel64bit.sh

Now is a good time to read through the build script to understand what it is doing. It will download several images and update them in a chroot and then extract the firmware. It then sets up all of the changes/fixes in the target image.

Once you feel you are ready to proceed run the build script with:

./BuildPiKernel64bit.sh

The script’s final output will be “ubuntu-18.04.4-preinstalled-server-arm64+raspi4.img” along with the xz compressed version and an updates.tar.xz file which is meant to bring a normal 18.04.4 installation up to date.

Release History

Release v28 – 2/24/2020

  • Updated source image to Ubuntu 18.04.4
  • Added xubuntu-desktop precompiled images
  • Updated to kernel 4.19.105 (addresses critical vulnerability)
  • Fixed flash-kernel package missing dtb files
  • Fixed issue that could cause ssh keys to not be created properly

Release v27 – 1/20/2020

  • Updated to kernel 4.19.97
  • Updated to Ubuntu 19.10.1 for base firmware instead of 19.10
  • Updated Raspbian firmware

Release v26 – 12/20/2019

  • Updated to kernel 4.19.89
  • Power management firmware features for WiFi are now enabled (saves 55mA (~270mW) of power on Pi 4)
  • Updated firmware

Release v25 – 12/3/2019

  • Fixed issue with desktop driver not loading properly (thanks tarsij!)
  • Updated kernel with a few V3D and other fixes

Release v24 – 11/29/2019

  • Updated kernel to 4.19.86
  • Updated packages and firmware
  • This kernel has additional USB and V3D improvements

Release v23 – 11/21/2019

  • Updated kernel to 4.19.84
  • Fixed problem that could cause desktop v22 release to not load
  • Enabled AppArmor kernel flags
  • Fixed display performance in headless mode by setting hdmi_force_hotplug=1 to enable the creation of a virtual display
  • Added #dtparam=i2c0=on and #dtparam=i2c1=on examples to /boot/firmware/config.txt to help enable those interfaces if needed

Release v22 – 11/17/2019

  • Updated kernel to 4.19.83
    • This kernel includes a number of fixes to USB and other drivers — if you were having trouble with USB v22 is worth a try for you!
  • Fixed issue where lightdm service (used by xubuntu-desktop) would not load properly
  • Added bootcode.bin to /boot/firmware to allow older Pis to boot the image (3B+ confirmed to work so far, others need testing)
  • Added README documentation to /boot/firmware/overlays folder for documentation inside dtoverlay command
  • Updated firmware

Release v21 – 11/8/2019

  • Preinstalled Desktop binary (ubuntu-desktop) now available in the releases section
  • Netplan changes removed by popular demand — it was causing too many issues as everyone is using the image differently
  • Updater now removes old kernel source code automatically (no more manual cleaning of these large folders needed)

Release v20 – 11/7/2019

  • Fixed bug that was causing kernel modules to not load (updating using /home/Updater.sh recommended)

Release v19 – 11/6/2019

  • Fixed PulseAudio only playing sound in mono, stereo now works!
  • Added kernel flags to optimize speed/clean up warnings/fix crashes
  • Moved most fixes to /etc/rc.local so they are applied after installing a *ubuntu-desktop package without waiting for the next update
  • Removed machine-id from the base image so that cloned images wouldn’t all have a duplicate machine-id
  • Fixed audit service error
  • Fixed “spice-vdagent[2107]: Cannot access vdagent virtio channel /dev/virtio-ports/com.redhat.spice.0” error
  • Fixed triggerhappy crash related to /lib/systemd/system/triggerhappy.socket being wrong type

Release v18 – 11/3/2019

  • Update to kernel 4.19.81
  • Added udev rule to allow users to use vcgencmd without sudo (thanks xlazom00)
  • Fixed udev mounts not being visible (thanks wyuenho for the pull request)
  • Build script improvements now gets cross chain compiler / qemu user static 4.1 / related build dependencies
  • Build script now retrieves all dependencies for you on a blank Ubuntu 18.04.4 Virtual Machine (if you want to build)

Release v17 – 11/1/2019

  • Fixed issue with CUPS preventing firmware modules from loading in xubuntu-desktop
  • Fixed unescaped EOF issue that was messing up fixes in /etc/rc.local (thanks meisenzahl for the pull request!)

Release v16 – 10/31/2019

  • Updated Pi firmware (sound / video fixes, see https://github.com/Hexxeh/rpi-firmware/commit/c5736330216628b5ff8e3d17dde7cc03ce2126e6
  • Updated Ubuntu-side firmware from updates included on the preinstalled 1910 release image
  • New 64 bit Raspberry Pi userland tools/libraries (vcgencmd) tools are now available — they are being freshly built each version now in the build script!
  • Fixed issue where Pulse would not come back on after first reboot
  • Fixed netplan so startup isn’t delayed by several minutes without an ethernet cable plugged in
  • Fixed several kernel flags related to sound/video

v15 Official Release – 10/28/2019

Script to update between releases is finally ready, and with that I am taking this out of pre-release!
To get the update script use the following commands:

wget https://raw.githubusercontent.com/TheRemote/Ubuntu-Server-raspi4-unofficial/master/Updater.sh
chmod +x Updater.sh
sudo ./Updater.sh

You can update from any pre-release release version. Please make a backup first!
The updater is located at /home/Updater.sh on v15 and up (to run type sudo bash /home/Updater.sh)

Pre-Release v14 – 10/26/2019

  • Kernel source tree and headers are now included in the image!
  • The kernel build source tree is located at rpi-linux-“${KERNEL_VERSION}”
  • Ubuntu’s first official release has come for the Pi 4 but it’s 19.10 only which is not a LTS release and support ends for it in -DKMS module building tested (you can test using apt install hello-dkms)
  • If you want custom kernel flags you can go to the /usr/src/rpi-linux folder and run make menuconfig (see BuildPiKernel64bit.sh for more info)
  • Rewrote build script to be more readable and reliable. It’s still a work in progress but I’m breaking things down into functions, etc.

Pre-Release v13 – 10/23/2019

  • raspi-config tool is now included with the image for (testing only, don’t use on critical fully set up images). You can use it to turn on i2c/spi/etc. File an issue if you find problems!
  • vcgencmd tool (and other libraspberrypi-userland packages) are now included (older build, works for essentials such as vcgencmd measure_temp, vcgencmd get_config int, vcgencmd get_throttled, etc)
  • Added 5Ghz WiFi band support (default regulatory domain US, change in /etc/default/crda if desired)
  • Updated kernel to 4.19.80
  • Fixed sound artifacts when playing YouTube/videos in browser
  • Fixed fsck errors during resize2fs operations

Pre-Release v12 – 10/6/2019

  • Fixed Bluetooth not automatically attaching (now appears in both console and desktop mode)
  • Updated firmware using the latest from the Raspbian image

Pre-Release v11 – 10/5/2019

  • Updated kernel and modules to rpi-4.19.75
  • Updated kernel to 4.19.76
  • Fixed several video driver issues including very low performance, YouTube videos in full screen freezing the Pi, low color resolution in xubuntu-desktop and graphical artifacts in kubuntu-desktop
  • Fixed bluetooth by adding missing firmware file not present in firmware-nonfree
  • Updated /boot/firmware/config.txt with useful HDMI debug flags — uncomment some of these such as hdmi_safe if you are not getting display output
  • Added lines in config.txt to configure SPI and i2C — you can uncomment these lines if you need to enable them
  • Updated WiFi firmware
  • Added missing regulatory.db files (used by WiFi) to /lib/firmware
  • Note for Kubuntu desktop: the compositor needs to be disabled for everything to draw correctly. Use the shortcut Alt + Shift + F12 to disable the compositor and everything will draw normally. Now go into the Settings app and go to the “Compositor” section and uncheck “Enable compositor at startup” to prevent it from turning back on when you reboot.

Pre-Release v10 – 10/3/2019

  • Fixed issue with wireless not showing in v9
  • Fixed bad symlink creation (pull request #38)

Pre-Release v9 – 10/2/2019

  • Updated kernel and modules to rpi-4.19.75
  • start*.elf and fixup*.dat files (GPU firmware) are now updated with each release
  • Kernel .config has been updated with the latest default config and Sakiki-‘s conform_config.sh parameters
  • New conform_config_jamesachambers.sh script added to better keep track of kernel config changes
  • SPI is now enabled
  • CPU bandwidth provisioning for FAIR_GROUP_SCHED is now enabled (CONFIG_CFS_BANDWIDTH=y)
  • Additional Ceph kernel config parameters enabled (see conform_config_jamesachambers.sh for all params)
  • A lot of additional hardware support has been enabled via the official Raspberry Pi default kernel config params — if you were having trouble with a device try v9
  • Cleaned up build script by adding additional needed dependencies to apt-get commands, broke up some sections and added additional comments

Pre-Release v8 – 9/21/2019

  • Updated kernel to rpi-4.19.73
  • Added hosts entry to prevent slow sudo command
  • Added CONFIG_CGROUP_PIDS=y to .config file
  • Committed extras folder to repository
  • Added forcefsck file to run fsck on first boot
  • Reduced image size substantially by running fstrim on .img

Pre-Release v7 – 9/8/2019

  • Updated kernel to rpi-4.19.71
  • Added CONFIG_BLK_DEV_RBD=y to kernel .config file to enable Ceph support

Pre-Release v6 – 9/7/2019

  • Updated kernel to rpi-4.19.71
  • Integrated all available updates from apt into the base image
  • Fixed display driver issue — if you are running v5 you can fix it by commenting out dtoverlay=vc4-fkms-v3d from /boot/config.txt
  • Enabled Ceph support in the kernel .config
  • Added build flags to kernel build line to build a more complete device tree (dtbo files)
  • Integrated all upstream updates since v5 from raspberrypi-linux and firmware-nonfree including a 3D driver fix for aarch64

Pre-Release v5 – 9/3/2019

  • Desktop support added
    • Expect lots of warnings in the logs. If you find solutions to them please leave a comment — many commits come from the comments!
    • Be advised — installing can take quite a while on a Pi — overnight or when you have something to do is a good time
  • Type one the following commands to install your preferred flavor of Ubuntu Desktop
    • sudo apt-get install xubuntu-desktop # or
    • sudo apt-get install kubuntu-desktop

Pre-Release v4 – 9/2/2019

  • Recompiled kernel to include support for Ubuntu features that are not present in Raspbian
  • Enabled USB UAS support
  • Fixed video driver by modifying config.txt and compiling with 3D support
  • System now boots clean and loads all modules (sudo systemd status)

Pre-Release v3 – 9/2/2019

  • Fixed IPv6 and a few other module load errors

Pre-Release v2 – 8/31/2019

  • Boot time reduced from 100s to around 30s
  • Messing with apt-mark or flash-kernel is no longer necessary and the fix has been built into the image
  • Fixed bluetooth firmware bug that was looking in /etc/firmware instead of /lib/firmware
  • Fixed entropy bug causing slow startup
  • Fixed mdadm.conf RAID warning
  • Module.symvars is now available in /boot/firmware/ if you need it to build kernel modules
    If you need the whole source tree check out the accompanying build script in the repository. It’s exactly the same as how the kernel and modules were built.
  • Various other fixes (special thanks to Joan at jamesachambers.com for contributing so many)
  • More at https://jamesachambers.com/raspberry-pi-ubuntu-server-18-04-2-installation-guide/

322 thoughts on “Raspberry Pi 4 Ubuntu Server / Desktop 18.04.4 Image”

  1. Avatar for Alex Mikhalev

    Thank you James,
    highly appreciate your effort, I was expecting Ubuntu maintaining this, but they dropped the ball and you kindly picked it up.
    Really great – saved me a lot of time and hassle: so far best OS I found for RPI4 is gentoo arm64, but number of modern packages available on gentoo is one – consul :).
    Your kernel allows me to build my Rpi4 cluster with distributed storage.

    1. Avatar for James A. Chambers

      Hey Alex,

      I’m glad to hear that you were able to build it! I’m working on building an updated version of the kernel that updates some of the sources it draws from but if you were able to build it you already likely have figured out that part!

      The gentoo kernel is really good. I actually use some of the build scripts that they use for that kernel for building this Raspberry Pi kernel for Ubuntu. Sakiki-‘s work on getting a good stable 64 bit gentoo kernel on Raspberry Pi and her detailed documentation pretty much made this process possible for me to adapt to build this Ubuntu image.

      In my latest build attempt I had tried to update to draw firmware from newer sources and ended up with all kinds of problems. I even committed a few of the changes to the cleanup script etc. to GitHub but I may actually just start over from the old version and not try anything too ambitious and just keep it stable. That seems to be the most valuable part of this kernel/image build (as well as having the included userland 64 bit tools).

      -James

  2. Avatar for Ben Funar

    Hi James,

    Wonder if you have some guidance here. I’ve got RPi 4, now with the official Ubuntu 20.04 working fine. Except I need to be able to either run RASPI-CONFIG or perform it’s equivalent to turn on some interfaces. In this case serial is disabled and I’ve yet to find any manual way to enable it.

    Did work with a dev who has an install script through github that installs RASPI-CONFIG however Ubuntu puts it’s config files in /boot/firmware instead of /boot so RASPI-CONFIG fails.

    Given your previous work with RPi 4 and ubuntu how could i either get RASPI-CONFIG to point to the right directory or just manually change the config files to enable serial. Would ultimately also like to enable the camera too….

    1. Avatar for James A. Chambers

      Hey Ben,

      Great question! For this image I manually edited the raspi-config script to point to the right directories.

      If I remember correctly it’s just in /usr/bin and it’s just a script that can be edited with nano or your favorite text editor. If you use nano you can use Ctrl+W and search for /boot and add the extra firmware part.

      You could also use mine from this image which I believe already has this modification but might be a slightly older version by this point. You can also just grab the latest master script from raspi-config and edit that one and run it on your Pi!

  3. Avatar for Emil

    Hi James,
    Since ubuntu 18.04 already have official support for RaspberryPi from Canonical, any idea how to merge your image with the official image?

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