Getting Bluetooth working on Armbian 5.27

[pfeerick]

I downloaded the legacy kernel (I should have specified that) and did not download the mainline kernel because it said it was experimental. I followed the steps from the link you gave and got Bluetooth manager working, until trying to pair a keyboard and it crashed. Shortly after Ubuntu displayed a message saying it had experienced a error. I rebooted the system and the Bluetooth icon had disappeared.

Thanks!    I just had to be doubly sure as the other consideration is that the those instruction may not work on mainline... I can't say I seen anyone report back on that front! 

Did you make sure you added the three things

Code:

echo 1 > /sys/class/rfkill/rfkill0/state
rtk_hciattach /dev/ttyS1 rtk_h5 # BT on Pine is always connected to UART1
hciconfig hci0 up

to /etc/rc.local ?

They're put in that file so those commands are executed on every boot. The more 'proper' way to do that is to make a service, but this is the lazy way that works. 

Other than that, I don't know what else is going on... there is a remote possibility it's SoPine related, or maybe the bluetooth just doesn't like your keyboard... or something else weird is going on.