smartwell

i tried stop bluetooth.service, yes start up is fast i try latest nightly images , it is ok, thanks everyone， armbian is a great job @Igor interesting thing: when i erase SPI boot loader, board can't boot up, so i update SPI flash with bootloader , the latest images works fine, so ........... next question: how to rotate screen ? now i just know xrandr, it is not efficient method.

en, thank you, do you test on rockpi4a ?

yes, this can slove problem, but armbian start up very slow , i try armbian buster 5.4.28 on rockpi4a (1g ram) using SD card , it needs 2 mintues, so ....... what can i do ????