Ubuntu Wiki

• Check RFKill state of bluetooth

$ rfkill list bluetooth
1: hci0: Bluetooth
        Soft blocked: no
        Hard blocked: no

• Verify hci device is listed as in example above. It should be either blocked or not blocked depending on the indicator state.
• Start bluetoothctl utility and verify it finds our HCI device

phablet@ubuntu-phablet:~$ bluetoothctl 
[NEW] Controller 30:30:3A:41:30:3A Nexus 4 [default]
[bluetooth]# list
Controller 30:30:3A:41:30:3A Nexus 4 [default]

• Verify the ccontroller state in BlueZ corresponds to the rfkill/hciconfig state

[bluetooth]# show 30:30:3A:41:30:3A
Controller 30:30:3A:41:30:3A
        Name: Nexus 4
        Alias: Nexus 4
        Class: 0x1c0000
        Powered: yes
        Discoverable: no
        Pairable: yes
        UUID: Headset AG                (00001112-0000-1000-8000-00805f9b34fb)
        UUID: Generic Attribute Profile (00001801-0000-1000-8000-00805f9b34fb)
        UUID: A/V Remote Control        (0000110e-0000-1000-8000-00805f9b34fb)
        UUID: OBEX File Transfer        (00001106-0000-1000-8000-00805f9b34fb)
        UUID: Generic Access Profile    (00001800-0000-1000-8000-00805f9b34fb)
        UUID: OBEX Object Push          (00001105-0000-1000-8000-00805f9b34fb)
        UUID: PnP Information           (00001200-0000-1000-8000-00805f9b34fb)
        UUID: A/V Remote Control Target (0000110c-0000-1000-8000-00805f9b34fb)
        UUID: IrMC Sync                 (00001104-0000-1000-8000-00805f9b34fb)
        UUID: Audio Source              (0000110a-0000-1000-8000-00805f9b34fb)
        UUID: Audio Sink                (0000110b-0000-1000-8000-00805f9b34fb)
        UUID: Vendor specific           (00005005-0000-1000-8000-0002ee000001)
        UUID: Message Notification Se.. (00001133-0000-1000-8000-00805f9b34fb)
        UUID: Phonebook Access Server   (0000112f-0000-1000-8000-00805f9b34fb)
        UUID: Message Access Server     (00001132-0000-1000-8000-00805f9b34fb)
        Modalias: usb:v1D6Bp0246d0521
        Discovering: no

• The 'Powered' property should correspond to the state of the rfkill and the hci device.
• Power controller off and verify it correctly turns off via hciconfig

[bluetooth]# power off
Changing power off succeeded
[CHG] Controller 30:30:3A:41:30:3A Powered: no
[CHG] Controller 30:30:3A:41:30:3A Discovering: no
[CHG] Controller 30:30:3A:41:30:3A Class: 0x000000
[bluetooth]# show 30:30:3A:41:30:3A
Controller 30:30:3A:41:30:3A
        Name: Nexus 4
        Alias: Nexus 4
        Class: 0x000000
        Powered: no
        Discoverable: no
        Pairable: yes
        UUID: Headset AG                (00001112-0000-1000-8000-00805f9b34fb)
        UUID: Generic Attribute Profile (00001801-0000-1000-8000-00805f9b34fb)
        UUID: A/V Remote Control        (0000110e-0000-1000-8000-00805f9b34fb)
        UUID: OBEX File Transfer        (00001106-0000-1000-8000-00805f9b34fb)
        UUID: Generic Access Profile    (00001800-0000-1000-8000-00805f9b34fb)
        UUID: OBEX Object Push          (00001105-0000-1000-8000-00805f9b34fb)
        UUID: PnP Information           (00001200-0000-1000-8000-00805f9b34fb)
        UUID: A/V Remote Control Target (0000110c-0000-1000-8000-00805f9b34fb)
        UUID: IrMC Sync                 (00001104-0000-1000-8000-00805f9b34fb)
        UUID: Audio Source              (0000110a-0000-1000-8000-00805f9b34fb)
        UUID: Audio Sink                (0000110b-0000-1000-8000-00805f9b34fb)
        UUID: Vendor specific           (00005005-0000-1000-8000-0002ee000001)
        UUID: Message Notification Se.. (00001133-0000-1000-8000-00805f9b34fb)
        UUID: Phonebook Access Server   (0000112f-0000-1000-8000-00805f9b34fb)
        UUID: Message Access Server     (00001132-0000-1000-8000-00805f9b34fb)
        Modalias: usb:v1D6Bp0246d0521
        Discovering: no
[bluetooth]# quit
[DEL] Controller 30:30:3A:41:30:3A Nexus 4 [default]
phablet@ubuntu-phablet:~$ hciconfig hci0
hci0:   Type: BR/EDR  Bus: UNKNOWN
        BD Address: 30:30:3A:41:30:3A  ACL MTU: 1024:6  SCO MTU: 50:8
        DOWN 
        RX bytes:0 acl:0 sco:0 events:90 errors:0
        TX bytes:0 acl:0 sco:0 commands:0 errors:0

• Now do the same again but turn the controller back on.

[bluetooth]# power on
[CHG] Controller 30:30:3A:41:30:3A Class: 0x1c0000
Changing power on succeeded
[CHG] Controller 30:30:3A:41:30:3A Powered: yes
[bluetooth]# show 30:30:3A:41:30:3A
Controller 30:30:3A:41:30:3A
        Name: Nexus 4
        Alias: Nexus 4
        Class: 0x1c0000
        Powered: yes
        Discoverable: no
        Pairable: yes
        UUID: Headset AG                (00001112-0000-1000-8000-00805f9b34fb)
        UUID: Generic Attribute Profile (00001801-0000-1000-8000-00805f9b34fb)
        UUID: A/V Remote Control        (0000110e-0000-1000-8000-00805f9b34fb)
        UUID: OBEX File Transfer        (00001106-0000-1000-8000-00805f9b34fb)
        UUID: Generic Access Profile    (00001800-0000-1000-8000-00805f9b34fb)
        UUID: OBEX Object Push          (00001105-0000-1000-8000-00805f9b34fb)
        UUID: PnP Information           (00001200-0000-1000-8000-00805f9b34fb)
        UUID: A/V Remote Control Target (0000110c-0000-1000-8000-00805f9b34fb)
        UUID: IrMC Sync                 (00001104-0000-1000-8000-00805f9b34fb)
        UUID: Audio Source              (0000110a-0000-1000-8000-00805f9b34fb)
        UUID: Audio Sink                (0000110b-0000-1000-8000-00805f9b34fb)
        UUID: Vendor specific           (00005005-0000-1000-8000-0002ee000001)
        UUID: Message Notification Se.. (00001133-0000-1000-8000-00805f9b34fb)
        UUID: Phonebook Access Server   (0000112f-0000-1000-8000-00805f9b34fb)
        UUID: Message Access Server     (00001132-0000-1000-8000-00805f9b34fb)
        Modalias: usb:v1D6Bp0246d0521
        Discovering: no
[bluetooth]# quit
[DEL] Controller 30:30:3A:41:30:3A Nexus 4 [default]
phablet@ubuntu-phablet:~$ hciconfig hci0
hci0:   Type: BR/EDR  Bus: UNKNOWN
        BD Address: 30:30:3A:41:30:3A  ACL MTU: 1024:6  SCO MTU: 50:8
        UP RUNNING 
        RX bytes:0 acl:0 sco:0 events:128 errors:0
        TX bytes:0 acl:0 sco:0 commands:0 errors:0