ArmbianHowTo

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m (Building image)
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Replace /dev/sdx with your device. You must use /dev/sdx, not /dev/sdx1!
 
Replace /dev/sdx with your device. You must use /dev/sdx, not /dev/sdx1!
 
==Changing display output==
 
With current kernel version (4.13) changing display output must be done by recompiling u-boot. This is necessary because kernel supports only SimpleFB. This will change in the future. 
 
===LCD===
 
 
====Enable touchscreen====
 
Create blacklist file:
 
# echo "blacklist sun4i_gpadc_iio" > /etc/modprobe.d/blacklist-touchscreen.conf
 
# echo "blacklist sun4i_gpadc" >> /etc/modprobe.d/blacklist-touchscreen.conf
 
 
====Calibrate touchscreen====
 
Install calibration package:
 
# apt-get install xinput-calibrator
 
 
After completion start the program inside the X.
 
Applications
 
  -> System
 
    -> Calibrate Touchscreen
 
 
You will see blank screen. Touch the display at the marks. Then store the calibration values.
 
Create new file '''99-calibration.conf'''
 
# cat > /etc/X11/xorg.conf.d/99-calibration.conf << __EOF__
 
Section "InputClass"
 
Identifier "calibration"
 
MatchProduct "1c25000.rtp"
 
Option "Calibration" "3930 108 348 3948"
 
Option "SwapAxes" "0"
 
EndSection
 
__EOF__
 
 
Put the values from the calibrator program.
 
 
===VGA===
 
 
====Changing resolution====
 
The default resolution in 1024x768. You can list all resolutions with:
 
# xrandr
 
 
The output should be something like this:
 
Screen 0: minimum 320 x 200, current 1280 x 1024, maximum 8192 x 8192
 
VGA-1 unknown connection 1280x1024+0+0 (normal left inverted right x axis y axis) 0mm x 0mm
 
  1024x768      60.00 +
 
  1920x1200    59.88    59.95 
 
  1920x1080    60.00 
 
  1600x1200    60.00 
 
  1680x1050    59.95    59.88 
 
  1400x1050    59.98    59.95 
 
  1600x900      60.00 
 
  1280x1024    60.02*
 
  1440x900      59.89    59.90 
 
  1280x960      60.00 
 
  1366x768      59.79    60.00 
 
  1360x768      60.02 
 
  1280x800      59.81    59.91 
 
  1280x768      59.87    59.99 
 
  1280x720      60.00 
 
  800x600      60.32    56.25 
 
  848x480      60.00 
 
  640x480      59.94 
 
 
To change resolution from the command line, do the following:
 
# export DISPLAY=:0
 
# xrandr -s <resolution>
 
 
===HDMI===
 
 
====Set custom resolution====
 
 
To use lower resolution than 1920x1080 append '''/boot/armbianEnv.txt''' with:
 
extraargs=video=HDMI-A-1:1280x1080
 
 
This will set monitor with 1280x1080 resolution. Getting supported modes is done with:
 
# cat /sys/class/drm/card0-HDMI-A-1/modes
 
1920x1080
 
1920x1080
 
1920x1080
 
1920x1080
 
1920x1080
 
1920x1080
 
1280x1024
 
1280x960
 
1152x864
 
1280x720
 
1280x720
 
1280x720
 
1024x768
 
1024x768
 
1024x768
 
832x624
 
800x600
 
800x600
 
800x600
 
800x600
 
720x576
 
720x480
 
720x480
 
640x480
 
640x480
 
640x480
 
640x480
 
720x400
 
 
====Disabling HDMI output====
 
 
To disable video output on the HDMI monitor add folloing in '''/boot/armbianEnv.txt''':
 
extraargs=video=HDMI-A-1:d
 
 
Save the file and reboot the board.
 
  
 
==Debugging==
 
==Debugging==

Revision as of 01:35, 12 February 2018

Building image

There is great Armbian documentation here.

  • Clone repository
 # git clone https://github.com/armbian/build.git
 Cloning into 'build'...
 remote: Counting objects: 32391, done.
 remote: Compressing objects: 100% (69/69), done.
 remote: Total 32391 (delta 60), reused 75 (delta 44), pack-reused 32278
 Receiving objects: 100% (32391/32391), 258.91 MiB | 959.00 KiB/s, done.
 Resolving deltas: 100% (21325/21325), done.
 Checking connectivity... done.
 Checking out files: 100% (2205/2205), done.

Soon (probably) there will be olimex fork with some customizations.

  • Run builder
 # cd build
 # ./compile

Building requires root access. System preparation can take long, depending on system, etc. After that you should see something like that:

Armbian-1.png

Select Full OS Image for flashing. This will create output image for direct flashing on SD-card.

Armbian-2.png

Select Do not change the kernel configuration. All needed configuration should be selected automatically. If you want some kernel modifications, select the other option.

Armbian-3.png

Go to <Show CSC/WIP/ESO>. Currently A20-SOM204 is not officially supported by Armbian team. Instead the board is supported by Olimex team, which is under CSC section. So select that menu and confirm the action.

Armbian-4.png Armbian-5.png

Select olimex-som204-a20.

Armbian-6.png

Select desired distribution. We recommend jessie for server build, and xenial for image with desktop environment.

Armbian-7.png

Select if you want server or desktop.

After build the images and other packages will be in the output folder:

 # tree output
 output/
 ├── config
 ├── debs
 │   ├── armbian-config_5.41_all.deb
 │   ├── armbian-firmware_5.41_all.deb
 │   ├── armbian-firmware-full_5.41_all.deb
 │   ├── armbian-tools-jessie_5.41_armhf.deb
 │   ├── armbian-tools-xenial_5.41_armhf.deb
 │   ├── extra
 │   ├── jessie
 │   ├── linux-u-boot-dev-olimex-som204-a20_5.41_armhf.deb
 │   └── xenial
 │       └── linux-xenial-root-dev-olimex-som204-a20_5.41_armhf.deb
 ├── debug
 │   ├── logs-09_02_2018-13_53_10.tgz
 │   ├── logs-09_02_2018-15_08_20.tgz
 │   ├── logs-12_02_2018-10_58_50.tgz
 │   ├── logs-12_02_2018-11_01_35.tgz
 │   ├── logs-12_02_2018-11_11_51.tgz
 │   ├── logs-.tgz
 │   ├── output.log
 │   ├── patching.log
 │   └── timestamp
 ├── images
 │   ├── Armbian_5.41_Olimex-som204-a20_Debian_jessie_dev_4.15.0.img
 │   └── Armbian_5.41_Olimex-som204-a20_Ubuntu_xenial_dev_4.15.0_desktop.img
 └── patch


  • Flashing image

Put sdcard in the host PC. New device should appear, e.g. /dev/sdc. Flash the image using the following command:

 # dd if=Armbian_5.41_Olimex-som204-a20_Debian_jessie_dev_4.15.0.img of=/dev/sdx bs=10M

Replace /dev/sdx with your device. You must use /dev/sdx, not /dev/sdx1!

Debugging

Enabling DRM debug output

The DRM driver supports multiple debugging levels.

Add the following in /boot/armbianEnv.txt:

extraargs=drm.debug=0xf