El Bluetooth se sigue encendiendo

He visto este problema en un Nexus 4 y en un Nexus 5. El Bluetooth se enciende de forma inesperada. Se puede apagar, pero volverá un minuto más tarde.

Buscando en Google, parece que esto podría deberse a una aplicación que se comporta mal, pero no parece haber una buena solución para averiguar qué aplicación.

¿Hay alguna forma de averiguar qué es lo que hace que se reactive el Bluetooth todo el tiempo?

Por si sirve de algo, he capturado parte de la salida de adb tras desactivar el Bluetooth.

Al desactivar:

D/BluetoothManagerService(  578): disable(): mBluetooth = android.bluetooth.IBluetooth$Stub$Proxy@42d29fa0 mBinding = false
D/BluetoothManagerService(  578): Message: 2
D/BluetoothManagerService(  578): Sending off request.
D/BluetoothAdapterState(23958): CURRENT_STATE=ON, MESSAGE = USER_TURN_OFF
D/BluetoothAdapterProperties(23958): Setting state to 13
I/BluetoothAdapterState(23958): Bluetooth adapter state changed: 12-> 13
D/BluetoothAdapterService(23958): Broadcasting updateAdapterState() to 1 receivers.
D/BluetoothAdapterProperties(23958): onBluetoothDisable()
I/BluetoothAdapterState(23958): Entering PendingCommandState State: isTurningOn()=false, isTurningOff()=true
D/BluetoothManagerService(  578): Message: 60
D/BluetoothManagerService(  578): MESSAGE_BLUETOOTH_STATE_CHANGE: prevState = 12, newState=13
D/BluetoothManagerService(  578): Bluetooth State Change Intent: 12 -> 13
D/BluetoothMapService(23958): onReceive
D/BluetoothMapService(23958): STATE_TURNING_OFF
D/BluetoothMapService(23958): MAP Service closeService in
I/BtOppRfcommListener(23958): stopping Accept Thread
I/CompanionService(13584): bluetoothStateChangeReceiver action = android.bluetooth.adapter.action.STATE_CHANGED
D/CachedBluetoothDevice(14368):  Clearing all connection state for dev:Bose SoundLink Wireless Mobile speaker
D/CachedBluetoothDevice(14368):  Clearing all connection state for dev:ANDY
D/CachedBluetoothDevice(14368):  Clearing all connection state for dev:obd2ecu
D/CachedBluetoothDevice(14368):  Clearing all connection state for dev:Glass 6014
D/CachedBluetoothDevice(14368):  Clearing all connection state for dev:P311
D/CachedBluetoothDevice(14368):  Clearing all connection state for dev:Logitech MX5000 Keyboard
W/ContextImpl(14368): Calling a method in the system process without a qualified user: android.app.ContextImpl.startService:1487 android.content.ContextWrapper.startService:494 android.content.ContextWrapper.startService:494 com.android.set
tings.bluetooth.DockEventReceiver.beginStartingService:134 com.android.settings.bluetooth.DockEventReceiver.onReceive:115
D/DockEventReceiver(14368): finishStartingService: stopping service
D/BluetoothPbap(14368): Proxy object disconnected
D/PbapServerProfile(14368): Bluetooth service disconnected
W/BluetoothAdapterState(23958): Timeout will setting scan mode..Continuing with disable...
D/BluetoothAdapterState(23958): CURRENT_STATE=PENDING, MESSAGE = BEGIN_DISABLE, isTurningOn=false, isTurningOff=true
E/bt-btif (23958): btif_disable_bluetooth : not yet enabled

Entonces, momentos después:

D/BluetoothAdapterState(23958): CURRENT_STATE=PENDING, MESSAGE = DISABLE_TIMEOUT, isTurningOn=false, isTurningOff=true
E/BluetoothAdapterState(23958): Error disabling Bluetooth
D/BluetoothAdapterProperties(23958): Setting state to 12
I/BluetoothAdapterState(23958): Bluetooth adapter state changed: 13-> 12
D/BluetoothAdapterService(23958): Broadcasting updateAdapterState() to 1 receivers.
D/BluetoothManagerService(  578): Message: 60
D/BluetoothManagerService(  578): MESSAGE_BLUETOOTH_STATE_CHANGE: prevState = 13, newState=12
D/BluetoothManagerService(  578): Broadcasting onBluetoothStateChange(true) to 13 receivers.
D/BluetoothPan(  578): onBluetoothStateChange(on) call bindService
I/BluetoothAdapterState(23958): Entering On State