Comment 24 for bug 1674509

ok, i got a little further, seems the bluez snap doesnt really have access to ttyAMA0 so i had to re-install it in --devmode ... now i get (still without the dtoverlay though, since this does not boot at all):

ogra@pi3:~$ sudo hciattach /dev/ttyAMA0 bcm43xx 921600 noflow -
bcm43xx_init
Cannot open directory '/etc/firmware': No such file or directory
Patch not found, continue anyway
Set Controller UART speed to 921600 bit/s
Device setup complete
ogra@pi3:~$ sudo bluetoothctl
[NEW] Controller AA:AA:AA:AA:AA:AA pi3 [default]
[bluetooth]# agent on
Agent registered
[bluetooth]# default-agent
Default agent request successful
[bluetooth]# scan on
Failed to start discovery: org.bluez.Error.NotReady
[bluetooth]# quit
Agent unregistered
[DEL] Controller AA:AA:AA:AA:AA:AA pi3 [default]
ogra@pi3:~$