Ubuntu Server 20.04 LTS @5.4.20

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rrd
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Ubuntu Server 20.04 LTS @5.4.20

Post by rrd »

I created an image of ubuntu server 20.04 with the mainline kernel 5.4.20.

Forked hexdump0815/imagebuilder into my fork and refactored the whole build process. It's still work in progress, but i released a ready to use image and want to share it.

Features:
- added lots of modules to kernel to make the image as usefull as possible, such as usb drivers, cifs, etc.
- new bootstrap
- fits to 2GB SD card
- download 161MB, image 1.1GB, free space on "/" 210MB
- resize partition script in /root dir

Steps:
- copy image
- run as root "sh /root/extend-rootfs.sh"
- run as root "apt-get update && apt-get upgrade && apt-get dist-upgrade && apt-get autoremove"

user: linux
pw: changeme

Download
odroid_u3-armv7l-ubuntu20.04minimal-1601403301.zip
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odroid (Mon Oct 05, 2020 9:50 am) • ieuzwales (Wed Oct 28, 2020 4:41 am)

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Re: Ubuntu Server 20.04 LTS @5.4.20

Post by LotusLTS »

Thanks. Everything is simple and fast. The image is squeezed very well.
My question is: How do I install Nginx? an error is reported during installation.
"..Starting A high performance web server and a reverse proxy server"


Who tried to install on Odroid U3 - Webinoly?

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Re: Ubuntu Server 20.04 LTS @5.4.20

Post by rrd »

It's because ipv6 is disabled by default (i should change it) in the boot config.

2 solutions:

1. go to /boot/extlinux/exlinux.conf and remove "ipv6.disable=1" on the last line

or

2. disable the ipv6 binding in /etc/nginx/sites-enabled/default (add # to the beginning of "listen [::]:80 default_server")
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Re: Ubuntu Server 20.04 LTS @5.4.20

Post by LotusLTS »

Thanks. It worked!
I used the first option that you indicated.
The second did not have to be done.

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Re: Ubuntu Server 20.04 LTS @5.4.20

Post by ieuzwales »

Hi there,

Image is excellent for my needs. I am however, finding great difficulty in trying to get it to work on an eMMC module that I have and would prefer to use for stability.

I've tried the odroid-backup route to convert the SD image into an eMMC friendly version, but that utility doesn't seem to be working for me.

Do you have any suggestions at all?

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Re: Ubuntu Server 20.04 LTS @5.4.20

Post by mad_ady »

If you're familiar with ansible, this playbook should install most of what you need to run it: https://github.com/mad-ady/ansible-odro ... ackup.yaml

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Re: Ubuntu Server 20.04 LTS @5.4.20

Post by hexdump »

it is very nice to see that my initial effort to make some easily accessible recent linux images available for the odroid x and u sbc's now already has some children for other use cases which seem to grow quite well on their own ... i think this is open source at its best and its very nice that this meanwhile 8 year old hardware still has a lot of good use cases as the os and sowfware can grow with it over time due to its open source nature ...

best wishes - hexdump

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Re: Ubuntu Server 20.04 LTS @5.4.20

Post by bastard_84 »

hi,

the image works very well but there is no the tun module for openvpn server in the kernel.
Can you help me?

my use is : openvpn server over airvpn and adguard home for ads

sorry for my english
best regards from italy

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Re: Ubuntu Server 20.04 LTS @5.4.20

Post by Mark1250 »

@rrd & @hexdump Thanks for your hard work with keeping the awesome Odroid U3 working with newer kernels. I have my U3 running rrd's Ubuntu 20.04 image with a Dokuwiki docker container. :D

For anyone looking to update u-boot on their eMMC so they can run this image on the eMMC, here is how I did it.

This is all based on hexdump0815 hard work.

Code: Select all

I created a KVM VM start with Ubuntu 18.04 minimal image. I run openSuse on my desktop computer, so it was simpler to just use a VM.

After the VM is installed and fully updated.

As root or use sudo
apt install:
git
build-essential
g++-8-arm-linux-gnueabi
gcc-8-arm-linux-gnueabi
device-tree-compiler
bison
flex
unzip

Create symlinks to the installed CROSS_COMPILE C & C++ binaries:

ln -s /usr/bin/arm-linux-gnueabi-gcc-8 /usr/bin/arm-eabi-gcc
ln -s /usr/bin/arm-linux-gnueabi-as /usr/bin/arm-eabi-as
ln -s /usr/bin/arm-linux-gnueabi-ld /usr/bin/arm-eabi-ld
ln -s /usr/bin/arm-linux-gnueabi-ar /usr/bin/arm-eabi-ar
ln -s /usr/bin/arm-linux-gnueabi-objcopy /usr/bin/arm-eabi-objcopy
ln -s /usr/bin/arm-linux-gnueabi-readelf /usr/bin/arm-eabi-readelf
ln -s /usr/bin/arm-linux-gnueabi-objdump /usr/bin/arm-eabi-objdump
ln -s /usr/bin/arm-linux-gnueabi-nm /usr/bin/arm-eabi-nm

As regular user:

export CROSS_COMPILE=arm-eabi-

The following section comes from https://github.com/hexdump0815/u-boot-misc/blob/master/readme.exy

git clone https://gitlab.denx.de/u-boot/u-boot.git/
mv u-boot u-boot-mainline-exy
cd u-boot-mainline-exy
git checkout v2020.07
wget https://github.com/hexdump0815/u-boot-misc/raw/master/misc.exy/add-odroid-x-support-and-uenv-txt.patch
patch -p1 < add-odroid-x-support-and-uenv-txt.patch
make odroid_defconfig
make -j4

cp u-boot.bin exy-u-boot.bin
cd ..

mkdir u-boot-workdir-exy
cd u-boot-workdir-exy
wget https://github.com/hexdump0815/u-boot-misc/raw/master/misc.exy/boot.tar.gz
tar -xzf boot.tar.gz
cd boot
cp ../../u-boot-mainline-exy/u-boot-dtb.bin .

dd iflag=dsync oflag=dsync if=./E4412_S.bl1.HardKernel.bin of=exy-boot.dd seek=1
dd iflag=dsync oflag=dsync if=./bl2.signed.bin of=exy-boot.dd seek=31
dd iflag=dsync oflag=dsync if=./u-boot-dtb.bin of=exy-boot.dd seek=63
dd iflag=dsync oflag=dsync if=./E4412_S.tzsw.signed.bin of=exy-boot.dd seek=2111

Copy exy-boot.dd to a microSD card with a suitable image for OdroidU3. - I used rrd's Ubuntu 20.04 image.
  Either mount the microSD on desktop computer or scp the file to the running U3
  
With the U3 running off of the microSD card carefully install eMMC onto U3 board

As root or via sudo

fdisk -l Should show both the microSD and eMMC
  Use the mount command to see which mmcblk is mounted on root (which is the microSD card.  - It was mmcblk0 for me.
  
You can make a copy of the hidden boot partion of the eMMC with:
  dd if=/dev/mmcblk1boot0 of=old-boot-block.dd iflag=dsync oflag=dsync status=progress
  
Make the hidden boot partion writable:
  echo 0 > /sys/block/mmcblk1part0/force_ro
  
Write the boot block to the eMMC.
  dd if=exy-boot.dd of=/dev/mmcblk1boot0 bs=512 skip=1 iflag=dsync oflag=dsync status=progress


I had already dd'ed rrd's Ubuntu 20.04 image on the eMMC, so I shut the U3 down removed the microSD card and booted from the eMMC.
Hopefully this helps somebody else.

Mark
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odroid (Mon Nov 30, 2020 10:11 am) • mikmakmuk (Mon Feb 01, 2021 5:51 am)

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Re: Ubuntu Server 20.04 LTS @5.4.20

Post by 김깔라 »

Hi.

Thank you very much for providing the image of Ubuntu.

The installation is normal, but there are two problems.

1. RealTec Wifi Module3 (RTL 8188cus) is not recognized.
EX) https://github.com/pvaret/rtl8192cu-fixes

2. I can't recognize the sound.

3. Bluetooth recognition is not possible

4. Linux-header installation is not possible.

Is there a solution?

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Re: Ubuntu Server 20.04 LTS @5.4.20

Post by mikmakmuk »

김깔라 wrote:
Sun Jan 17, 2021 9:46 am
Hi.

Thank you very much for providing the image of Ubuntu.

The installation is normal, but there are two problems.

1. RealTec Wifi Module3 (RTL 8188cus) is not recognized.
EX) https://github.com/pvaret/rtl8192cu-fixes

2. I can't recognize the sound.

3. Bluetooth recognition is not possible

4. Linux-header installation is not possible.

Is there a solution?
For issue 1, you need to recompile the kernel as the RTL wifi modules are not included in this build. Follow the instructions here.
In menuconfig, select:
1. Networking support->Wireless->Generic IEEE 802.11 Networking Stack
2. Device drivers->Networking device support->Wireless LAN->Realtek devices->Realtek rtlwifi family of devices->Realtek RTL8192CU/RTL8188CU USB Wireless Network Adapter
The follow instructions to install new kernel and modules.

For issue 2 and 3, you can check in the kernel if the sound and bluetooth subsystem and the modules you need are enabled in the kernel. Since I did not use these, I didn't check.
For issue 4, I don't know.

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Re: Ubuntu Server 20.04 LTS @5.4.20

Post by srdz »

Hi.
I want to install webmin on u3, but first install tasksel and then choose lubuntu or xubuntu. after reboot, the cursor appears for a moment in graphics mode and the image disappears. does anyone know how to help?
Thanks.

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Re: Ubuntu Server 20.04 LTS @5.4.20

Post by bomberb17 »

Hello,
I tried to install wireguard VPN server using this image and seems it's not possible, as I was getting a Unable to access interface: Protocol not supported error. There are several posts around suggesting to install linux headers for this issue, but seems they don't exist? This is a message I was also getting from wireguard installation log

Code: Select all

Building for 5.4.20-stb-exy+
Module build for kernel 5.4.20-stb-exy+ was skipped since the
kernel headers for this kernel does not seem to be installed.

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Re: Ubuntu Server 20.04 LTS @5.4.20

Post by barbu »

Mark1250 wrote:
Mon Nov 30, 2020 4:51 am
@rrd & @hexdump Thanks for your hard work with keeping the awesome Odroid U3 working with newer kernels. I have my U3 running rrd's Ubuntu 20.04 image with a Dokuwiki docker container. :D

For anyone looking to update u-boot on their eMMC so they can run this image on the eMMC, here is how I did it.

This is all based on hexdump0815 hard work.

Code: Select all

I created a KVM VM start with Ubuntu 18.04 minimal image. I run openSuse on my desktop computer, so it was simpler to just use a VM.

After the VM is installed and fully updated.

As root or use sudo
apt install:
git
build-essential
...


I had already dd'ed rrd's Ubuntu 20.04 image on the eMMC, so I shut the U3 down removed the microSD card and booted from the eMMC.
Hopefully this helps somebody else.

Mark
I thought I was on to a winner here but am still not making progress :(

I would like a minimal/server Ubuntu 20.04 on my U3+. Alternatively 18.04.

I have a red dot 8GB eMMC card with 2010.12 u-boot.

I did manage to get u-boot 2015.10 on to the card but something wasn't right so did sd recovery back to 2010.12

I have tried to follow various online sources to update u-boot but not met with success.

Can anyone tell me please what is the minimum version of u-boot I should be aiming for to run Ubuntu 18.04 or 20.04 ?

Mark I was able to use your instructions on a Windows 10 VM Ubuntu 18.04 up to the point of

Code: Select all

git clone https://gitlab.denx.de/u-boot/u-boot.git/
but it seems that no longer exists.

Is there another set of instructions I could follow?

have spent so long trying to get this to work!! :roll:

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Re: Ubuntu Server 20.04 LTS @5.4.20

Post by odroid »

u-boot cloning was working fine here via redirecting. It took around several minutes.

Code: Select all

$ git clone https://gitlab.denx.de/u-boot/u-boot.git/
Cloning into 'u-boot'...
warning: redirecting to https://source.denx.de/u-boot/u-boot.git/
remote: Enumerating objects: 784293, done.
remote: Counting objects: 100% (2622/2622), done.
remote: Compressing objects: 100% (850/850), done.
remote: Total 784293 (delta 1992), reused 2074 (delta 1752), pack-reused 781671
Receiving objects: 100% (784293/784293), 155.05 MiB | 1.85 MiB/s, done.
Resolving deltas: 100% (653905/653905), done.
Updating files: 100% (17719/17719), done. 

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Re: Ubuntu Server 20.04 LTS @5.4.20

Post by barbu »

Thanks - that was useful to know and I found out that I had a gnutls handshake error trying to git clone from Windows VM Ubuntu. I tried some workarounds but failed. I was also unable to follow the instructions using my XU4 with errors making me think I perhaps needed an x86 based machine??

So I turned to my H2+ and I was able to successfully follow the instructions, scp the file to my U3 and then try to complete the dd process.

It seemed to be OK until I got to

Code: Select all

Make the hidden boot partion writable:
  echo 0 > /sys/block/mmcblk1part0/force_ro
but I found

Code: Select all

mmcblk1part0
didn't exist. I wasn't sure if I could substitute this for

Code: Select all

mmcblk1boot0
but I did and then finished with

Code: Select all

Write the boot block to the eMMC.
  dd if=exy-boot.dd of=/dev/mmcblk1boot0 bs=512 skip=1 iflag=dsync oflag=dsync status=progress
I then rebooted with the eMMC card with a 20.04 minimal image and got this on UART

Code: Select all

U-Boot 2021.07-00427-g490101a5e5-dirty (Jul 13 2021 - 00:25:15 +0000)

CPU:   Exynos4412 @ 1 GHz
Model: Odroid based on Exynos4412
Type:  u3
DRAM:
Some progress I think, but not there yet...

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Re: Ubuntu Server 20.04 LTS @5.4.20

Post by odroid »

echo 0 > /sys/block/mmcblk1boot0/force_ro should be correct one.

I think it is worth to try this alternative way if your eMMC-to-microSD adapter board works with your U3 SD card slot.
viewtopic.php?p=325731#p325731
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Re: Ubuntu Server 20.04 LTS @5.4.20

Post by bomberb17 »

bomberb17 wrote:
Fri Jul 09, 2021 12:56 am
Hello,
I tried to install wireguard VPN server using this image and seems it's not possible, as I was getting a Unable to access interface: Protocol not supported error. There are several posts around suggesting to install linux headers for this issue, but seems they don't exist? This is a message I was also getting from wireguard installation log

Code: Select all

Building for 5.4.20-stb-exy+
Module build for kernel 5.4.20-stb-exy+ was skipped since the
kernel headers for this kernel does not seem to be installed.
So It looks to me kernel headers do not exist at all..
Instead of using this image, maybe I can rewrite the last existing official Odroid U3 image (i see it is 16.04?) and then

Code: Select all

do sudo do-release-upgrade
from there up to 20.04?

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Re: Ubuntu Server 20.04 LTS @5.4.20

Post by odroid »

@bomberb17,
The old image might not have a kernel header package.
You have to use this old kernel source code instead of the header package if you really want to use the old kernel in Ubuntu 16.04.
https://github.com/hardkernel/linux/tree/odroid-3.8.y

Could you find @rrd's kernel 5.4.20 source branch?

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Re: Ubuntu Server 20.04 LTS @5.4.20

Post by bomberb17 »

odroid wrote:
Wed Jul 14, 2021 2:30 pm
@bomberb17,
The old image might not have a kernel header package.
You have to use this old kernel source code instead of the header package if you really want to use the old kernel in Ubuntu 16.04.
https://github.com/hardkernel/linux/tree/odroid-3.8.y
Thanks for answering - I wasn't suggesting to use the old kernel in 16.04. But if the headers do not exist for this 5.4.20-stb-exy+ kernel, then I was thinking of starting from the official 16.04 and then do-release-upgrade to 20.04 (which might result in a different kernel that does include the headers?) Not sure if this makes sense though.
odroid wrote:
Wed Jul 14, 2021 2:30 pm
Could you find @rrd's kernel 5.4.20 source branch?
Searched everywhere and can't find anything. See also reply to similar question below
mikmakmuk wrote:
Sat Feb 06, 2021 7:14 am
김깔라 wrote:
Sun Jan 17, 2021 9:46 am
....

4. Linux-header installation is not possible.

Is there a solution?
...

For issue 4, I don't know.

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Re: Ubuntu Server 20.04 LTS @5.4.20

Post by mad_ady »

But if the headers do not exist for this 5.4.20-stb-exy+ kernel, then I was thinking of starting from the official 16.04 and then do-release-upgrade to 20.04 (which might result in a different kernel that does include the headers)
No, that won't work since the kernel is not shipped by Ubuntu. You need to track down the kernel source...

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Re: Ubuntu Server 20.04 LTS @5.4.20

Post by odroid »

I think header part in the vanilla kernel 5.4.20 source tree can be used too if just needed to build a wireguard driver,.

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Re: Ubuntu Server 20.04 LTS @5.4.20

Post by barbu »

odroid wrote:
Wed Jul 14, 2021 11:05 am

I think it is worth to try this alternative way if your eMMC-to-microSD adapter board works with your U3 SD card slot.
viewtopic.php?p=325731#p325731
That has worked for me thank you :)

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Re: Ubuntu Server 20.04 LTS @5.4.20

Post by bomberb17 »

odroid wrote:
Thu Jul 15, 2021 4:02 pm
I think header part in the vanilla kernel 5.4.20 source tree can be used too if just needed to build a wireguard driver,.
Can you point me to that kernel source? Can't find anything

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Re: Ubuntu Server 20.04 LTS @5.4.20

Post by barbu »

bomberb17 wrote:
Fri Jul 16, 2021 7:59 am
odroid wrote:
Thu Jul 15, 2021 4:02 pm
I think header part in the vanilla kernel 5.4.20 source tree can be used too if just needed to build a wireguard driver,.
Can you point me to that kernel source? Can't find anything
I'm far from being an expert on this but was facing no end of issues with my installation saying the 5.4.20 headers were missing when trying to perform/install various things including wireless drivers. In the end I found it easier to install a different image https://github.com/hexdump0815/imagebui ... /210508-01
from which I compiled kernel 5.13.5 and added my required drivers from the menuconfig menu.

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Re: Ubuntu Server 20.04 LTS @5.4.20

Post by Lordbuntu »

Hey - i dont know much about crosscompiling can anyone compile the Kernelmodule vor cdc_acm ? (Usb Serial modem used for zigbee sticks)
Or has someone a Tutorial how to crosscompile a kernel module?

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Re: Ubuntu Server 20.04 LTS @5.4.20

Post by bomberb17 »

barbu wrote:
Tue Jul 27, 2021 9:10 am
I'm far from being an expert on this but was facing no end of issues with my installation saying the 5.4.20 headers were missing when trying to perform/install various things including wireless drivers. In the end I found it easier to install a different image https://github.com/hexdump0815/imagebui ... /210508-01
from which I compiled kernel 5.13.5 and added my required drivers from the menuconfig menu.
Can you please give more detailed directions or instructions for the last sentence? How did you compile 5.13.5 and add the drivers? I've never played with linux kernels before.. Is this guide a good one? https://www.linux.com/topic/desktop/how ... -kernel-0/
I flashed the image you linked but I still get the exact same problem with wireguard.. (its kernel looks like its 5.10.25-stb-exy+ )

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