avafinger

Maybe https://github.com/avafinger/nanopi-r2s-ubuntu-server-minimal-image/releases/tag/v0.3 is a better choice.

> first boot the “reboot” is work fine，but when link to WAN I don't know why WAN would interfere in "reboot" process. Can you provide more info about LAN/WAN ?...

To be able to investigate we need a complete boot log (shutdown -h now and reboot). Please get a USB TTL debug so we can have a look at the...

Kernel 5.8-rc is straight vanilla mainline with FE's USB3 work. i will provide the sources asap.

If you want to build kernel natively (on-board) you could follow the instructions: https://github.com/avafinger/nanopi-m4-ubuntu-base-minimal#build-mainline-kernel-on-nanopi-m4-on-board Use the latest kernel but bear in mind vanilla kernel does not have the patches for...

Can you try this Image and check if it works for you? https://github.com/avafinger/nanopi-r2s-ubuntu-server-minimal-image/releases/tag/v0.7i

Which kernel version did you build?

I don't usually maintain a patch set, here is the DTS patch to have wifi, BT, spdif, and rt5651, strip off the rest you don't want. It's been a long...

Just restore the following line to original one: ``` -#include "rk3399-nanopi4.dtsi" +#include "rk3399-nanopi-m4.dtsi" ```

Do you have a TTL-USB to grab the boot log from the serial console? Does it boot from SD Card?