Hello, I have been working on some community-built Ubuntu 22.04 images for the Radxa Zero 3 that are finally ready for release! Please let me know if any issues are encountered, but do take a moment to read the below notes.
There are two different WiFi chips used by the Radxa Zero 3 one supporting WiFi 6 and the other supporting WiFi 4. The image is configured to support the WiFi 6 (AIC8800) module by default. If you do not see any WiFi or Bluetooth interfaces you are likely using the WiFi 4 (AP6212) chip, you will need to switch the device tree file for proper functionality.
- Open the
ubuntuEnv.txtfile: Usually in the
/boot/firmware/directory. You can use a text editor like nano to open the file.
- Modify the line that starts with
fdtfile=so it looks like
- Save the file and reboot the system.
Ubuntu Server Notes
cloud-init is used by default for Ubuntu server, there is no defined WiFi interface in the cloud-init config. If you do not define one you must manually bring up the network interface on boot with the below command.
sudo ifconfig wlan0 up
You can then verify WiFi is working by scanning for wireless networks:
sudo wlist wlan0 scan
Ubuntu Desktop Notes
If your Radxa Zero 3 has less than 4GB of RAM then please do not use the Ubuntu desktop image! Because Gnome is so resource-intensive it may cause important system services to crash resulting in unexpected behavior.