Hi Pinst,
What did you do to solve this issues. I’m facing the same problem. I though i had something todo with SMACK permissions. I’m able to use the hcitool to perform a scan or even with the “bluetoothctl scan on” But unable to start advertising.
Are you trying to run bluetoothServices or your own app? Note that bluetoothServices runs unsandboxed, I found my own app needed to be unsandboxed also (although I might have an idea for a fix). My FW:
root@swi-mdm9x28-wp:~# cm info
Device: WP7702
IMEI: 352653090190778
IMEISV: 4
FSN: 4L931585051610
Firmware Version: SWI9X06Y_02.32.02.00 c2e98c jenkins 2019/08/30 07:28:21
Bootloader Version: SWI9X06Y_02.32.02.00 c2e98c jenkins 2019/08/30 07:28:21
MCU Version: 002.013
PRI Part Number (PN): 9909138
PRI Revision: 001.001
Carrier PRI Name: SIERRA
Carrier PRI Revision: 001.027_000
SKU: 1104405
Last Reset Cause: Power Down
Resets Count: Expected: 360 Unexpected: 1
root@swi-mdm9x28-wp:~# dmesg | grep Blue
[ 9.591073] Bluetooth: Core ver 2.22
[ 9.591364] Bluetooth: HCI device and connection manager initialized
[ 9.591404] Bluetooth: HCI socket layer initialized
[ 9.591422] Bluetooth: L2CAP socket layer initialized
[ 9.591474] Bluetooth: SCO socket layer initialized
[ 9.600945] Bluetooth: HCI UART driver ver 2.3
[ 9.600967] Bluetooth: HCI UART protocol H4 registered
[ 14.364666] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 14.364692] Bluetooth: BNEP filters: protocol multicast
[ 14.364734] Bluetooth: BNEP socket layer initialized
root@swi-mdm9x28-wp:~#