Public bug reported:
After upgrading to Ubuntu 24.04, my Bluetooth adapter (Cambridge Silicon
Radio, Ltd Bluetooth Dongle - 0a12:0001) is no longer working. The
system fails to detect the Bluetooth controller, and running
bluetoothctl power on returns:
arduino
Copy
Edit
No default controller available
Steps to Reproduce:
Plug in the Bluetooth USB adapter.
Run lsusb to confirm the device is detected.
Run rfkill list to ensure Bluetooth is not blocked.
Run bluetoothctl power on → No default controller available error
appears.
Run dmesg | grep -i bluetooth, which shows:
bash
Copy
Edit
Bluetooth: hci0: CSR: Unbranded CSR clone detected; adding workarounds and
force-suspending once...
Bluetooth: hci0: command 0x1004 tx timeout
Bluetooth: hci0: Opcode 0x1004 failed: -110
Expected Behavior:
The Bluetooth adapter should be detected and allow me to connect to Bluetooth
devices.
Actual Behavior:
The adapter is detected by lsusb, but Bluetooth does not work, and no
controller is available in bluetoothctl.
Additional Information:
Ubuntu Version: Ubuntu 24.04 (Noble)
Kernel Version: 6.8.0-53-generic
Hardware: Cambridge Silicon Radio, Ltd Bluetooth Dongle (0a12:0001)
Worked in Previous Ubuntu Version: Yes, it was working fine before the upgrade.
Tried Fixes:
Unblocking via rfkill
Manually adding device ID via echo "0a12 0001" | sudo tee
/sys/bus/usb/drivers/btusb/new_id
Checking logs with dmesg, which indicates an issue with CSR firmware.
This issue seems related to unbranded CSR Bluetooth dongles. Any guidance on
resolving this would be appreciated.
ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: bluetooth (not installed)
ProcVersionSignature: Ubuntu 6.8.0-53.55-generic 6.8.12
Uname: Linux 6.8.0-53-generic x86_64
ApportVersion: 2.28.1-0ubuntu3.3
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Tue Feb 11 23:42:43 2025
InstallationDate: Installed on 2024-12-15 (58 days ago)
InstallationMedia: Ubuntu 22.04.5 LTS "Jammy Jellyfish" - Release amd64
(20240911)
InterestingModules: bnep btusb bluetooth
MachineType: INTEL H81
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.8.0-53-generic
root=UUID=656414bb-d7a3-4680-828c-dfe38a4dfcce ro quiet splash vt.handoff=7
SourcePackage: bluez
UpgradeStatus: Upgraded to noble on 2024-12-15 (58 days ago)
dmi.bios.date: 08/17/2022
dmi.bios.release: 4.6
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 4.6.5
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: H81
dmi.board.vendor: INTEL
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvr4.6.5:bd08/17/2022:br4.6:svnINTEL:pnH81:pvrTobefilledbyO.E.M.:rvnINTEL:rnH81:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:skuTobefilledbyO.E.M.:
dmi.product.family: To be filled by O.E.M.
dmi.product.name: H81
dmi.product.sku: To be filled by O.E.M.
dmi.product.version: To be filled by O.E.M.
dmi.sys.vendor: INTEL
hciconfig:
hci0: Type: Primary Bus: USB
BD Address: 00:1A:7D:DA:71:13 ACL MTU: 0:0 SCO MTU: 0:0
DOWN
RX bytes:149 acl:0 sco:0 events:9 errors:0
TX bytes:273 acl:0 sco:0 commands:10 errors:0
rfkill:
0: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
** Affects: bluez (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug noble wayland-session
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You received this bug notification because you are a member of Desktop
Packages, which is subscribed to bluez in Ubuntu.
https://bugs.launchpad.net/bugs/2098022
Title:
Bluetooth not working after Ubuntu upgrade
Status in bluez package in Ubuntu:
New
Bug description:
After upgrading to Ubuntu 24.04, my Bluetooth adapter (Cambridge
Silicon Radio, Ltd Bluetooth Dongle - 0a12:0001) is no longer working.
The system fails to detect the Bluetooth controller, and running
bluetoothctl power on returns:
arduino
Copy
Edit
No default controller available
Steps to Reproduce:
Plug in the Bluetooth USB adapter.
Run lsusb to confirm the device is detected.
Run rfkill list to ensure Bluetooth is not blocked.
Run bluetoothctl power on → No default controller available error
appears.
Run dmesg | grep -i bluetooth, which shows:
bash
Copy
Edit
Bluetooth: hci0: CSR: Unbranded CSR clone detected; adding workarounds and
force-suspending once...
Bluetooth: hci0: command 0x1004 tx timeout
Bluetooth: hci0: Opcode 0x1004 failed: -110
Expected Behavior:
The Bluetooth adapter should be detected and allow me to connect to Bluetooth
devices.
Actual Behavior:
The adapter is detected by lsusb, but Bluetooth does not work, and no
controller is available in bluetoothctl.
Additional Information:
Ubuntu Version: Ubuntu 24.04 (Noble)
Kernel Version: 6.8.0-53-generic
Hardware: Cambridge Silicon Radio, Ltd Bluetooth Dongle (0a12:0001)
Worked in Previous Ubuntu Version: Yes, it was working fine before the
upgrade.
Tried Fixes:
Unblocking via rfkill
Manually adding device ID via echo "0a12 0001" | sudo tee
/sys/bus/usb/drivers/btusb/new_id
Checking logs with dmesg, which indicates an issue with CSR firmware.
This issue seems related to unbranded CSR Bluetooth dongles. Any guidance on
resolving this would be appreciated.
ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: bluetooth (not installed)
ProcVersionSignature: Ubuntu 6.8.0-53.55-generic 6.8.12
Uname: Linux 6.8.0-53-generic x86_64
ApportVersion: 2.28.1-0ubuntu3.3
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Tue Feb 11 23:42:43 2025
InstallationDate: Installed on 2024-12-15 (58 days ago)
InstallationMedia: Ubuntu 22.04.5 LTS "Jammy Jellyfish" - Release amd64
(20240911)
InterestingModules: bnep btusb bluetooth
MachineType: INTEL H81
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.8.0-53-generic
root=UUID=656414bb-d7a3-4680-828c-dfe38a4dfcce ro quiet splash vt.handoff=7
SourcePackage: bluez
UpgradeStatus: Upgraded to noble on 2024-12-15 (58 days ago)
dmi.bios.date: 08/17/2022
dmi.bios.release: 4.6
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 4.6.5
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: H81
dmi.board.vendor: INTEL
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvr4.6.5:bd08/17/2022:br4.6:svnINTEL:pnH81:pvrTobefilledbyO.E.M.:rvnINTEL:rnH81:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:skuTobefilledbyO.E.M.:
dmi.product.family: To be filled by O.E.M.
dmi.product.name: H81
dmi.product.sku: To be filled by O.E.M.
dmi.product.version: To be filled by O.E.M.
dmi.sys.vendor: INTEL
hciconfig:
hci0: Type: Primary Bus: USB
BD Address: 00:1A:7D:DA:71:13 ACL MTU: 0:0 SCO MTU: 0:0
DOWN
RX bytes:149 acl:0 sco:0 events:9 errors:0
TX bytes:273 acl:0 sco:0 commands:10 errors:0
rfkill:
0: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
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