For the USB dongle there are kernel messages:
[ 34.065571] Bluetooth: hci0: BCM: firmware Patch file not found, tried: [ 34.065744] Bluetooth: hci0: BCM: 'brcm/BCM20702A1-0a5c-21e8.hcd' [ 34.065757] Bluetooth: hci0: BCM: 'brcm/BCM-0a5c-21e8.hcd'
For the USB dongle there are kernel messages:
[ 34.065571] Bluetooth: hci0: BCM: firmware Patch file not found, tried: 1-0a5c- 21e8.hcd' 0a5c-21e8. hcd'
[ 34.065744] Bluetooth: hci0: BCM: 'brcm/BCM20702A
[ 34.065757] Bluetooth: hci0: BCM: 'brcm/BCM-