A20 allwinner BT GbE legacy mainline SATA WIFI

Ubuntu desktop – legacy kernel
  .torrent (recommended) ?
Multimedia and desktop usage scenarios.


Debian server – mainline kernel
  .torrent (recommended) ?
Command line interface – server usage scenarios.


other download options and archive

  • PWM ready on pin PB2 (legacy)
  • bluetooth working with on-board device. Enabled by default on both kernels.
  • total memory is 2000Mb (disabled all memory reservations for GPU on CLI images)
  • due to bad PCB placement, there is some crosstalk between Wifi and VGA in certain videomodes
  • make sure you power the board via power connector otherwise your USB port won’t be powered
  • Our OS images are only for A20 based Cubietruck and do not work on H8 based so called Cubietruck Plus (we don’t support CT+ anytime soon due too some design flaws like no real SATA and thermal problems)

Known issues

Legacy kernel (default branches)

  • unstable Bluetooth stack

Mainline kernel (next/dev branches)

  • No Mali drivers
  • No hardware accelerated video decoding
  • Different GPIO numbering compared to the legacy kernel
  • schedutil CPU governor may cause clicks and pops on audio output – change to ondemand to work around this issue

Board: Lamobo R1

  • b53 switch driver in mainline kernel uses DSA interface for configuration instead of swconfig tool. Please check this issue for details
  • underpower issues are possible when using hard drive, HDMI and wireless together. Connecting a battery may help
  • Gigabit Ethernet transfer rate is around 300Mbit


Quick start | Documentation


Make sure you have a good & reliable SD card and a proper power supply. Archives can be uncompressed with 7-Zip on Windows, Keka on OS X and 7z on Linux (apt-get install p7zip-full). RAW images can be written with Etcher (all OS).


Insert SD card into a slot and power the board. (First) boot (with DHCP) takes up to 35 seconds with a class 10 SD Card and cheapest board.


Login as root on HDMI / serial console or via SSH and use password 1234. You will be prompted to change this password at first login. Next you will be asked to create a normal user account that is sudo enabled (beware of default QWERTY keyboard settings at this stage).

Tested hardware