Arch Linux

AxelFendersson

Member

Registered: 2014-12-03

Posts: 14

No bluetooth devices found

I'm trying to get bluetooth running on my laptop and I'm having an odd problem. I've installed the bluez and bluez-utils packages and enabled the bluetooth service in systemd. Everything seems to be running fine. But for some reason, whenever I search for nearby devices, nothing shows up. I have various bluetooth devices scattered around the desk (my phone and a mouse, for example) and they're all visible to each other but the laptop can't see any of them.

I've tried the following in bluetoothctl, but still nothing shows up.

$ bluetoothctl
[NEW] Controller 48:5A:B6:14:01:26 shoggoth [default]
[bluetooth]# devices
[bluetooth]# power on
[CHG] Controller 48:5A:B6:14:01:26 Class: 0x0c010c
Changing power on succeeded
[CHG] Controller 48:5A:B6:14:01:26 Powered: yes
[bluetooth]# scan on
Discovery started
[CHG] Controller 48:5A:B6:14:01:26 Discovering: yes
[bluetooth]# devices
[bluetooth]# agent on
Agent registered
[bluetooth]# devices
[bluetooth]#

Does anyone have any suggestions as to what I might be missing?

Last edited by AxelFendersson (2014-12-03 12:30:41)

AxelFendersson

Member

Registered: 2014-12-03

Posts: 14

Re: No bluetooth devices found

Hmm. Found this post which looks like much the same problem, but, alas, no solution.
https://bbs.archlinux.org/viewtopic.php?id=186892

AxelFendersson

Member

Registered: 2014-12-03

Posts: 14

Re: No bluetooth devices found

Looking around, this seems to be a common problem with this model of laptop (Lenovo B5400) in various different distros. Good to know it's not just me being daft; not so good to know that there probably isn't much I can do to get it working. I might occasionally try again in the future in case the driver gets updated in the Kernel but for now I guess I'll just have to live without Bluetooth. It's not all that important; I just wish I'd known before I went and bought a Bluetooth mouse.

blackrat

Member

From: Poland

Registered: 2014-12-10

Posts: 10

Re: No bluetooth devices found

Hello! Maybe i could solve your problem, because I have similar in my HP 635 half year ago. Can you show me the list of your rfkill command? I'll be waiting

AxelFendersson

Member

Registered: 2014-12-03

Posts: 14

Re: No bluetooth devices found

Sure. It's:

$ rfkill list
0: tpacpi_bluetooth_sw: Bluetooth
	Soft blocked: no
	Hard blocked: no
1: hci0: Bluetooth
	Soft blocked: no
	Hard blocked: no
2: phy0: Wireless LAN
	Soft blocked: no
	Hard blocked: no

blackrat

Member

From: Poland

Registered: 2014-12-10

Posts: 10

Re: No bluetooth devices found

OK! You've got a integrated Wifi card with Bluetooth (like mostly newer card in newer laptops). I see three possible solutions:
The first one is install bluez-firmware and reboot system
The second is blacklisting hp_wmi acer_wmi and asus_wmi (trust me I see many cases, when hp_wmi "blocks" working of bluetooth or wi-fi in non-HP notebooks (like my girlfriend's Toshiba).
The third is build a driver from Realtek or GitHub.

Can you tell me what's Window Manager or Desktop Environment you use?
Can I please you to showed me your lsusb and dmesg after trying scan the BT devices?

AxelFendersson

Member

Registered: 2014-12-03

Posts: 14

Re: No bluetooth devices found

OK! You've got a integrated Wifi card with Bluetooth (like mostly newer card in newer laptops). I see three possible solutions:
The first one is install bluez-firmware and reboot system

Tried this. No change.

The second is blacklisting hp_wmi acer_wmi and asus_wmi (trust me I see many cases, when hp_wmi "blocks" working of bluetooth or wi-fi in non-HP notebooks (like my girlfriend's Toshiba).

None of these modules are loaded, so I can't see this making a difference.

The third is build a driver from Realtek or GitHub.

Haven't tried this yet; might give it a go later.

Can you tell me what's Window Manager or Desktop Environment you use?

Cinnamon. I've installed blueman from the AUR to manage bluetooth devices, but it fails just the same as if I use bluetoothctl from a console.

Can I please you to showed me your lsusb and dmesg after trying scan the BT devices?

lsusb:

Bus 004 Device 003: ID 5986:0295 Acer, Inc 
Bus 004 Device 002: ID 8087:8000 Intel Corp. 
Bus 004 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 003: ID 0bda:b728 Realtek Semiconductor Corp. 
Bus 003 Device 002: ID 8087:8008 Intel Corp. 
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

dmesg | grep luetooth :

[    7.767413] thinkpad_acpi: rfkill switch tpacpi_bluetooth_sw: radio is unblocked
[    9.152357] Bluetooth: Core ver 2.19
[    9.152379] Bluetooth: HCI device and connection manager initialized
[    9.152387] Bluetooth: HCI socket layer initialized
[    9.152391] Bluetooth: L2CAP socket layer initialized
[    9.152399] Bluetooth: SCO socket layer initialized
[   15.343448] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[   15.343451] Bluetooth: BNEP filters: protocol multicast
[   15.343458] Bluetooth: BNEP socket layer initialized
[  119.466039] Bluetooth: RFCOMM TTY layer initialized
[  119.466048] Bluetooth: RFCOMM socket layer initialized
[  119.466053] Bluetooth: RFCOMM ver 1.11

(Unless you really want all of it!)

Last edited by AxelFendersson (2014-12-10 20:17:10)