This may be caused by missing firmware. The BT firmware is not in Ubuntu archive and it's delivered with OEM image due to license issue. Please try `dmesg | grep Bluetooth` and see if there's any complain about unable to find firmware.
This may be caused by missing firmware. The BT firmware is not in Ubuntu archive and it's delivered with OEM image due to license issue. Please try `dmesg | grep Bluetooth` and see if there's any complain about unable to find firmware.