Arch Linux

gazeto

Member

Registered: 2014-06-12

Posts: 7

[SOLVED] Bluetooth devices (Sennheiser headphones) not found

Hi all!
I have some Sennheiser Momentum headphones I wish to connect via bluetooth
I can connect and operate them without any issue on my android phone.
However despite my spending a lot of time trying and researching the internet these headphones are not detected by the system.
... this fix proposed in the wiki didn't work either.

[gazeto@opaque ~]$ systemctl start bluetooth.service
[gazeto@opaque ~]$ bluetoothctl
[NEW] Controller B8:76:3F:A7:AA:F0 opaque [default]
[NEW] Device BC:44:34:3B:F6:1F LENNY2
Agent registered
[bluetooth]# power on
Changing power on succeeded
[bluetooth]# agent on
Agent is already registered
[bluetooth]# scan on
Discovery started
[bluetooth]# devices
Device BC:44:34:3B:F6:1F LENNY2
[bluetooth]# show
Controller B8:76:3F:A7:AA:F0 (public)
	Name: opaque
	Alias: opaque
	Class: 0x001c010c
	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)
	UUID: Headset                   (00001108-0000-1000-8000-00805f9b34fb)
	Modalias: usb:v1D6Bp0246d0530
	Discovering: yes
[bluetooth]# exit
Agent unregistered
[DEL] Controller B8:76:3F:A7:AA:F0 opaque [default]

Does anybody have some ideas or a hint for me?
Thanks!

Other outputs in case useful:

[gazeto@opaque ~]$ systemctl status bluetooth.service
● bluetooth.service - Bluetooth service
   Loaded: loaded (/usr/lib/systemd/system/bluetooth.service; enabled; vendor preset: disabled)
   Active: active (running) since Fri 2018-02-02 16:32:49 CET; 30min ago
     Docs: man:bluetoothd(8)
 Main PID: 589 (bluetoothd)
   Status: "Running"
    Tasks: 1 (limit: 4915)
   CGroup: /system.slice/bluetooth.service
           └─589 /usr/lib/bluetooth/bluetoothd

[gazeto@opaque ~]$ pacman -Q | grep bluetooth
gnome-bluetooth 3.26.0+1+g3875844-1
pulseaudio-bluetooth 11.1-1

[gazeto@opaque ~]$ rfkill list
0: tpacpi_bluetooth_sw: Bluetooth
	Soft blocked: no
	Hard blocked: no
1: tpacpi_wwan_sw: Wireless WAN
	Soft blocked: no
	Hard blocked: no
2: phy0: Wireless LAN
	Soft blocked: no
	Hard blocked: no
3: hci0: Bluetooth
	Soft blocked: no
	Hard blocked: no

Last edited by gazeto (2018-02-03 17:42:12)

gazeto

Member

Registered: 2014-06-12

Posts: 7

Re: [SOLVED] Bluetooth devices (Sennheiser headphones) not found

Update:

After I tried the same thing (according to arch wiki trouble shoot) over and over again I once(!) got this result:

[bluetooth]# scan on
Discovery started
[bluetooth]# discoverable on
Changing discoverable on succeeded
[CHG] Controller B8:76:3F:A7:AA:F0 Discoverable: yes
[bluetooth]# pairable on
Changing pairable on succeeded
[NEW] Device 00:1B:66:80:BB:DF 00-1B-66-80-BB-DF
[CHG] Device 00:1B:66:80:BB:DF LegacyPairing: no
[CHG] Device 00:1B:66:80:BB:DF Name: MOMENTUM M2 AEBT
[CHG] Device 00:1B:66:80:BB:DF Alias: MOMENTUM M2 AEBT
[CHG] Device 00:1B:66:80:BB:DF LegacyPairing: yes
[bluetooth]# pair 00:1B:66:80:BB:DF
Attempting to pair with 00:1B:66:80:BB:DF
Failed to pair: org.bluez.Error.ConnectionAttemptFailed
[DEL] Device 00:1B:66:80:BB:DF MOMENTUM M2 AEBT
[bluetooth]# pair 00:1B:66:80:BB:DF
Device 00:1B:66:80:BB:DF not available
[bluetooth]# devices
Device BC:44:34:3B:F6:1F LENNY2

This is the device I wish to connect: 00:1B:66:80:BB:DF MOMENTUM M2 AEBT
Unfortunately I have not been successful reproducing  this scan result ...

So, again: No scanning result, no paring possible.
Any ideas?

gazeto

Member

Registered: 2014-06-12

Posts: 7

Re: [SOLVED] Bluetooth devices (Sennheiser headphones) not found

The problem is solved.

Reason seems to be a hardware issue: Once I removed my Lenovo from the docking station and placed it literally ON the headphones, the connection could establish.