Bluetooth disabled

[bill-lancaster]

My Bose Soundlink hasn't worked since installing K24.04, I looked at many posts on this but haven't found a solution.
System Settings/Bluetooth shows Bluetooth is disabled and the enable button seems to have no effect
Any advice would be appreciated.

[Snowhog]

AI Overview

The issue with your Bose Soundlink on Kubuntu 24.04 is likely due to a known problem with the Bluetooth stack (
BlueZ) or an audio configuration conflict with the upgrade to PipeWire.

Here are a few steps to troubleshoot and resolve the issue:

Basic Troubleshooting

1. Reboot your system and speaker: A simple power cycle can resolve many connection glitches. Unplug your laptop's charging cable and press and hold the power button for 10 seconds until it completely shuts down, then turn it back on. Turn your Bose speaker off and on again.

2. Remove and Re-pair the Device: This is a commonly effective solution for connection issues after an upgrade.

• Go to System Settings > Bluetooth.
• Find your Bose Soundlink in the device list, remove it, and then go through the Add New Device process to re-pair it.

3. Check Sound Settings: Ensure the correct audio output is selected.

• Go to System Settings > Audio > Playback.
• Verify that your Bose Soundlink is selected as the output device.

4. Check Bluetooth Profile: Sometimes, the wrong profile is automatically selected.

• In System Settings > Audio, select your Bose Soundlink and, under the Profile options, ensure a "High Fidelity" profile like A2DP Sink is selected for music playback.

Advanced Solutions (via Konsole)

If the basic steps don't work, you can use the terminal (Konsole) to investigate further.

1. Ensure system updates are installed: A patch for the Bluetooth issue was back-ported to Kubuntu 24.04.

sudo apt update && sudo apt upgrade -y
sudo reboot

2. Check Bluetooth service status:

sudo systemctl status bluetooth

It should show as active (running). If not, start it with sudo systemctl start bluetooth.

3. Use bluetoothctl for manual pairing: If the GUI is failing, the command line tool might work.

bluetoothctl

# Inside the bluetoothctl prompt:

agent on
scan on

# Wait for your speaker's MAC address to appear (it will look like XX:XX:XX:XX:XX:XX)

pair [your_speaker_MAC_address]
connect [your_speaker_MAC_address]

# Type 'quit' to exit

4. Verify PipeWire/PulseAudio status: Kubuntu 24.04 uses PipeWire by default, which can sometimes have configuration conflicts. Check if it's running correctly:

systemctl --user status pipewire pipewire-pulse wireplumber

If issues persist, you may need to check system logs for audio-related errors using journalctl -p 3 -xb | grep -i "pulse\\|audio\\|alsa" or sudo dmesg | grep -i "audio\\|sound\\|pulse\\|alsa".

Bose-Specific Step

You may also want to update your Bose Soundlink's firmware using a computer and a USB cable via the Bose Product Updater website, as outdated firmware can cause connectivity problems.

[claydoh]

So your Bluetooth adapter is probably missing a driver, or it isn't loading for some reason. Usually this is part of the wifi card though they are separate devices interns of the system.

If Wi-Fi working, if you use it ?
Was Bt working in previous installs?

Post the output of lsusb.
We are looking for hardware IDs for the Bluetooth hardware, which will help point to the next steps.

Also include the output of rfkill list

[bill-lancaster]

Thanks for the several responses.

This is the output from lsub

Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 1ea7:0066 SHARKOON Technologies GmbH [Mediatrack Edge Mini Keyboard]
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 003: ID 0bda:a725 Realtek Semiconductor Corp. Bluetooth Radio
Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 004 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
​

and rfkill list

0: hci0: Bluetooth
       Soft blocked: no
       Hard blocked: no

​

[bill-lancaster]

I should add that I have a USB Bluetooth adapter plugged into a PC
Thanks

[claydoh]

Bus 002 Device 003: ID 0bda:a725 Realtek Semiconductor Corp. Bluetooth Radio

Ok, Realtek, of course
This manufacturer has inconsistent support, usually with the WIFi, but often with Bluetooth as well. Their Ethernet stuff is usually well-supported.

I forgot to ask if this was USB or not, most are on the WiFi card these days, sorry.
Is it branded by any chance?

What kernel are you using?

[bill-lancaster]

The USB Bluetooth just has "Bluetooth 5.1" on it, it also has a blue LED which flashes when its plugged in.

Kubuntu 24.04

[claydoh]

Ok, sorry, may need more info.

 sudo dmesg | egrep -i 'blue|firm'

and which kernel you are running:

uname -r

Or get it from Kinfocenter/System Settings.
Being on 24.04 could involve the original release kernel, or the current HWE, if this has been enabled.

Make sure you have the package linux-firmware installed. I *think* this has the firmware for your dongle, but you should already have that.

There is a well known issue in 22.04 regarding firmware, but that was fixed before 24.04 came out iirc. So I am stumped, unless any output from dmesg shows errors.

[bill-lancaster]

sudo dmesg | egrep -i 'blue|firm'

[CODE]
[ 0.139960] Spectre V2 : Enabling Restricted Speculation for firmware calls
[ 1.103627] usb 2-1.1: Product: Bluetooth Radio
[ 17.826504] Bluetooth: Core ver 2.22
[ 17.826530] NET: Registered PF_BLUETOOTH protocol family
[ 17.826531] Bluetooth: HCI device and connection manager initialized
[ 17.826535] Bluetooth: HCI socket layer initialized
[ 17.826537] Bluetooth: L2CAP socket layer initialized
[ 17.826543] Bluetooth: SCO socket layer initialized
[ 18.458010] ACPI: video: [Firmware Bug]: Duplicate ACPI video bus devices for the same VGA controller, please try module parameter "video.allow_duplicates=1"if the current driver doesn't work.
[ 18.464753] Bluetooth: hci0: RTL: examining hci_ver=0a hci_rev=000b lmp_ver=0a lmp_subver=8761
[ 18.466431] Bluetooth: hci0: RTL: rom_version status=0 version=1
[ 18.466435] Bluetooth: hci0: RTL: loading rtl_bt/rtl8761bu_fw.bin
[ 18.903098] Bluetooth: hci0: RTL: loading rtl_bt/rtl8761bu_config.bin
[ 18.903578] Bluetooth: hci0: RTL: cfg_sz 6, total sz 30210
[ 19.066511] Bluetooth: hci0: RTL: fw version 0xdfc6d922
[ 31.397793] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 31.397802] Bluetooth: BNEP filters: protocol multicast
[ 31.397810] Bluetooth: BNEP socket layer initialized
[ 31.400217] Bluetooth: MGMT ver 1.23
[ 35.495340] Bluetooth: hci0: Opcode 0x0c03 failed: -110
[ 73.297620] Bluetooth: RFCOMM TTY layer initialized
[ 73.297645] Bluetooth: RFCOMM socket layer initialized
[ 73.297657] [Bluetooth: RFCOMM ver 1.11
[ 108.768932] Bluetooth: hci0: Opcode 0x0c03 failed: -110

And kernal is:- 6.14.0-36-generic

I have fwupd installed

[bill-lancaster]

When I click on the bluetooth icon in system tray here is what I get:-

The right hand panel is "info"
Clicking "Connect" results in error "Connection Failed: br-connection-adapter-not-powered"
Don't know if this helps

[claydoh]

Clicking "Connect" results in error "Connection Failed: br-connection-adapter-not-powered"
Don't know if this helps

It might -- have you tried a different USB port?

Bluetooth: hci0: Opcode 0x0c03 failed: -110

This also means something, but so far mainly with mediatek Bt devices.

[bill-lancaster]

I tried to remove the Bose in the blueman app, nothing seemed to happen.
Went to Settings/Bluetooth. Bluetooth shown as not enabled but this time the enable button worked and the Bose was connected OK.
Hope it stays this way!
Thanks for all the advice