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Message #06830
[Bug 2122361] [NEW] Bluetooth stoped to work, it wont turn on.
Public bug reported:
I was using ubuntu normally when it froze. I manually restarted and
bluetooth just do not turn on. Tried some actions with AI help but did
not worked. Here a summary (also generated by AI about what i've tried):
Bluetooth Troubleshooting Report for Ubuntu
Issue: Bluetooth is not functioning on an Ubuntu system. The bluetooth.service is active, but the Bluetooth adapter cannot be activated.
System Information:
Operating System: Ubuntu 24.04.3 LTS
Bluetooth Adapter: Qualcomm Atheros QCA9377
Summary of Diagnostic Findings:
The hardware was correctly identified and detected by the system (lsusb,
lspci).
The bluetooth.service was running correctly.
The rfkill tool confirmed no software or hardware blocks were active.
The hciconfig command showed the hci0 interface with a DOWN status and a
zeroed BD Address (00:00:00:00:00:00), indicating a failure to
initialize the hardware.
The command sudo hciconfig hci0 up returned the error Can't init device
hci0: Connection timed out (110), confirming a communication failure
between the software and the hardware.
The bluetoothctl list command returned an empty output, meaning the
bluetoothd daemon could not detect any available controllers.
It was confirmed that the system is already running the latest available
kernel (linux-generic-hwe-24.04).
Solutions Attempted:
Restarting the bluetooth.service.
Reinstalling bluez and related packages.
Checking for and confirming the presence of the necessary firmware files
in /lib/firmware.
Implementing a systemd script to manually load the firmware on boot
(later reverted).
Attempting to use a third-party firmware loader from a GitHub
repository, which failed due to the repository not being found.
Reverting all changes made to the system.
Conclusion:
Based on the results, the problem is not a simple misconfiguration or a missing package. It is a low-level issue most likely related to a bug in the Linux kernel's handling of the Qualcomm Atheros QCA9377 adapter's firmware initialization.
ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: bluetooth (not installed)
ProcVersionSignature: Ubuntu 6.14.0-29.29~24.04.1-generic 6.14.8
Uname: Linux 6.14.0-29-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.28.1-0ubuntu3.8
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Mon Sep 8 16:10:15 2025
InstallationDate: Installed on 2025-08-20 (19 days ago)
InstallationMedia: Ubuntu 24.04.1 LTS "Noble Numbat" - Release amd64 (20240827.1)
InterestingModules: bnep btusb bluetooth
MachineType: LENOVO 81TR
ProcEnviron:
LANG=pt_BR.UTF-8
PATH=(custom, no user)
SHELL=/usr/bin/zsh
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.14.0-29-generic root=UUID=17ab544b-f120-4b89-a887-158813b1242b ro quiet splash vt.handoff=7
SourcePackage: bluez
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 11/24/2020
dmi.bios.release: 1.33
dmi.bios.vendor: LENOVO
dmi.bios.version: BGCN33WW
dmi.board.asset.tag: NO Asset Tag
dmi.board.name: LNVNB161216
dmi.board.vendor: LENOVO
dmi.board.version: SDK0R33126 WIN
dmi.chassis.asset.tag: NO Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: IdeaPad L340-15IRH Gaming
dmi.ec.firmware.release: 1.33
dmi.modalias: dmi:bvnLENOVO:bvrBGCN33WW:bd11/24/2020:br1.33:efr1.33:svnLENOVO:pn81TR:pvrIdeaPadL340-15IRHGaming:rvnLENOVO:rnLNVNB161216:rvrSDK0R33126WIN:cvnLENOVO:ct10:cvrIdeaPadL340-15IRHGaming:skuLENOVO_MT_81TR_BU_idea_FM_IdeaPadL340-15IRHGaming:
dmi.product.family: IdeaPad L340-15IRH Gaming
dmi.product.name: 81TR
dmi.product.sku: LENOVO_MT_81TR_BU_idea_FM_IdeaPad L340-15IRH Gaming
dmi.product.version: IdeaPad L340-15IRH Gaming
dmi.sys.vendor: LENOVO
hciconfig:
hci0: Type: Primary Bus: USB
BD Address: 00:00:00:00:00:00 ACL MTU: 0:0 SCO MTU: 0:0
DOWN
RX bytes:0 acl:0 sco:0 events:0 errors:0
TX bytes:3 acl:0 sco:0 commands:1 errors:0
** Affects: bluez (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug noble
--
You received this bug notification because you are a member of
Debcrafters packages, which is subscribed to bluez in Ubuntu.
https://bugs.launchpad.net/bugs/2122361
Title:
Bluetooth stoped to work, it wont turn on.
Status in bluez package in Ubuntu:
New
Bug description:
I was using ubuntu normally when it froze. I manually restarted and
bluetooth just do not turn on. Tried some actions with AI help but did
not worked. Here a summary (also generated by AI about what i've
tried):
Bluetooth Troubleshooting Report for Ubuntu
Issue: Bluetooth is not functioning on an Ubuntu system. The bluetooth.service is active, but the Bluetooth adapter cannot be activated.
System Information:
Operating System: Ubuntu 24.04.3 LTS
Bluetooth Adapter: Qualcomm Atheros QCA9377
Summary of Diagnostic Findings:
The hardware was correctly identified and detected by the system
(lsusb, lspci).
The bluetooth.service was running correctly.
The rfkill tool confirmed no software or hardware blocks were active.
The hciconfig command showed the hci0 interface with a DOWN status and
a zeroed BD Address (00:00:00:00:00:00), indicating a failure to
initialize the hardware.
The command sudo hciconfig hci0 up returned the error Can't init
device hci0: Connection timed out (110), confirming a communication
failure between the software and the hardware.
The bluetoothctl list command returned an empty output, meaning the
bluetoothd daemon could not detect any available controllers.
It was confirmed that the system is already running the latest
available kernel (linux-generic-hwe-24.04).
Solutions Attempted:
Restarting the bluetooth.service.
Reinstalling bluez and related packages.
Checking for and confirming the presence of the necessary firmware
files in /lib/firmware.
Implementing a systemd script to manually load the firmware on boot
(later reverted).
Attempting to use a third-party firmware loader from a GitHub
repository, which failed due to the repository not being found.
Reverting all changes made to the system.
Conclusion:
Based on the results, the problem is not a simple misconfiguration or a missing package. It is a low-level issue most likely related to a bug in the Linux kernel's handling of the Qualcomm Atheros QCA9377 adapter's firmware initialization.
ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: bluetooth (not installed)
ProcVersionSignature: Ubuntu 6.14.0-29.29~24.04.1-generic 6.14.8
Uname: Linux 6.14.0-29-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.28.1-0ubuntu3.8
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Mon Sep 8 16:10:15 2025
InstallationDate: Installed on 2025-08-20 (19 days ago)
InstallationMedia: Ubuntu 24.04.1 LTS "Noble Numbat" - Release amd64 (20240827.1)
InterestingModules: bnep btusb bluetooth
MachineType: LENOVO 81TR
ProcEnviron:
LANG=pt_BR.UTF-8
PATH=(custom, no user)
SHELL=/usr/bin/zsh
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.14.0-29-generic root=UUID=17ab544b-f120-4b89-a887-158813b1242b ro quiet splash vt.handoff=7
SourcePackage: bluez
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 11/24/2020
dmi.bios.release: 1.33
dmi.bios.vendor: LENOVO
dmi.bios.version: BGCN33WW
dmi.board.asset.tag: NO Asset Tag
dmi.board.name: LNVNB161216
dmi.board.vendor: LENOVO
dmi.board.version: SDK0R33126 WIN
dmi.chassis.asset.tag: NO Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: IdeaPad L340-15IRH Gaming
dmi.ec.firmware.release: 1.33
dmi.modalias: dmi:bvnLENOVO:bvrBGCN33WW:bd11/24/2020:br1.33:efr1.33:svnLENOVO:pn81TR:pvrIdeaPadL340-15IRHGaming:rvnLENOVO:rnLNVNB161216:rvrSDK0R33126WIN:cvnLENOVO:ct10:cvrIdeaPadL340-15IRHGaming:skuLENOVO_MT_81TR_BU_idea_FM_IdeaPadL340-15IRHGaming:
dmi.product.family: IdeaPad L340-15IRH Gaming
dmi.product.name: 81TR
dmi.product.sku: LENOVO_MT_81TR_BU_idea_FM_IdeaPad L340-15IRH Gaming
dmi.product.version: IdeaPad L340-15IRH Gaming
dmi.sys.vendor: LENOVO
hciconfig:
hci0: Type: Primary Bus: USB
BD Address: 00:00:00:00:00:00 ACL MTU: 0:0 SCO MTU: 0:0
DOWN
RX bytes:0 acl:0 sco:0 events:0 errors:0
TX bytes:3 acl:0 sco:0 commands:1 errors:0
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