Arch Linux

julienfalque

Member

Registered: 2016-06-17

Posts: 50

[SOLVED] Bluetooth not working

Hi,

Bluetooth stopped working on my Dell XPS 15 (9550). The mouse won't connect anymore.

I tried bluetoothctl:

 $ bluetoothctl 
Agent registered
[bluetooth]# default-agent 
Default agent request successful
[bluetooth]# power on
Changing power on succeeded
[bluetooth]# scan on
Discovery started
[CHG] Controller 48:E2:44:F5:A1:66 Discovering: yes
[CHG] Device C0:D7:6E:67:47:E2 RSSI: -56
[CHG] Device C0:D7:6E:67:47:E2 UUIDs: 00001812-0000-1000-8000-00805f9b34fb
[bluetooth]# devices 
Device C0:D7:6E:67:47:E2 MX Anywhere 2
[bluetooth]# pair C0:D7:6E:67:47:E2
Attempting to pair with C0:D7:6E:67:47:E2
[CHG] Device C0:D7:6E:67:47:E2 Connected: yes
Failed to pair: org.bluez.Error.AuthenticationFailed
[CHG] Device C0:D7:6E:67:47:E2 Connected: no
[bluetooth]# paired-devices 
[bluetooth]#

with journalctl I see this message appear a lot:

kernel: Bluetooth: hci0: last event is not cmd complete (0x0f)

I have no idea how to fix this

Last edited by julienfalque (2019-08-26 18:46:35)

johan.cb

Member

From: Leipzig, Germany

Registered: 2016-07-10

Posts: 68

Re: [SOLVED] Bluetooth not working

I have the same problem, not able to discover new devices and pair to old already known devices.

And get the same error message as you do.

Interestingly Bluetooth works fine on other Arch machines with Intel Bluetooth. Only Broadcom Bluetooth seems to fail.

What hardware are you using?

julienfalque

Member

Registered: 2016-06-17

Posts: 50

Re: [SOLVED] Bluetooth not working

 $ lspci -vnn -d 14e4:
02:00.0 Network controller [0280]: Broadcom Limited BCM43602 802.11ac Wireless LAN SoC [14e4:43ba] (rev 01)
	Subsystem: Dell BCM43602 802.11ac Wireless LAN SoC [1028:0020]
	Flags: bus master, fast devsel, latency 0, IRQ 136
	Memory at dd800000 (64-bit, non-prefetchable) [size=32K]
	Memory at dd400000 (64-bit, non-prefetchable) [size=4M]
	Capabilities: <access denied>
	Kernel driver in use: brcmfmac
	Kernel modules: brcmfmac

I had to create the /lib/firmware/brcm/BCM-0a5c-6410.hcd file as suggested in https://bbs.archlinux.org/viewtopic.php?id=204739. I think it already worked without this file though.