Public bug reported:
Title: Bluetooth 5.4 Adapter (Ugreen CM749) Not Functioning on Ubuntu
20.04 with Kernel 6.x
Description:
The Bluetooth 5.4 adapter Ugreen CM749 is not functioning on Ubuntu 20.04 with
Kernel 6.x. The adapter is detected by the system but fails to initialize,
showing a "Connection timed out (110)" error when attempting to bring up the
interface. The Bluetooth 5.0 dongle works without issues on the same system.
Steps to Reproduce:
1. Plugged in the Ugreen CM749 Bluetooth 5.4 adapter.
2. Ran `hciconfig hci0 up` to bring up the Bluetooth interface.
3. Observed the error "Connection timed out (110)" in the terminal.
4. Checked the dmesg logs and found repeated Bluetooth errors.
Expected Behavior:
The Bluetooth 5.4 adapter should initialize correctly, allowing for Bluetooth
functionality such as pairing and connecting devices.
Actual Behavior:
The Bluetooth 5.4 adapter fails to initialize, with the interface staying down
and connection attempts timing out.
Additional Information:
- Kernel Version: 6.10.2-061002-generic
- Ubuntu Version: 20.04
- Hardware Information:
*-network:1
description: Bluetooth device
product: Realtek Bluetooth Adapter
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: usb@1:1
version: 1.00
- dmesg Output:
[12345.6789] Bluetooth: hci0: Opcode 0x1005 failed: -110
- hciconfig Output:
hci0: Type: Primary Bus: USB
BD Address: 00:A7:45:28:00:B3 ACL MTU: 0:0 SCO MTU: 0:0
DOWN
RX bytes:171 acl:0 sco:0 events:10 errors:0
TX bytes:276 acl:0 sco:0 commands:11 errors:0
ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: bluez 5.72-0ubuntu5
Uname: Linux 6.10.2-061002-generic x86_64
ApportVersion: 2.28.1-0ubuntu3.1
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: ubuntu:GNOME
Date: Fri Aug 9 17:05:31 2024
InterestingModules: rfcomm bnep btusb bluetooth
MachineType: Micro-Star International Co., Ltd. MS-7C51
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.10.2-061002-generic
root=UUID=b4f23699-fafb-4f32-8572-eb30ac62d1dc ro quiet splash
btusb.enable_autosuspend=0 usbcore.autosuspend=-1 vt.handoff=7
SourcePackage: bluez
UpgradeStatus: Upgraded to noble on 2024-07-30 (10 days ago)
dmi.bios.date: 07/20/2022
dmi.bios.release: 5.17
dmi.bios.vendor: American Megatrends International, LLC.
dmi.bios.version: 1.71
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: A320M-A PRO (MS-7C51)
dmi.board.vendor: Micro-Star International Co., Ltd.
dmi.board.version: 1.0
dmi.chassis.asset.tag: To be filled by O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: Micro-Star International Co., Ltd.
dmi.chassis.version: 1.0
dmi.modalias:
dmi:bvnAmericanMegatrendsInternational,LLC.:bvr1.71:bd07/20/2022:br5.17:svnMicro-StarInternationalCo.,Ltd.:pnMS-7C51:pvr1.0:rvnMicro-StarInternationalCo.,Ltd.:rnA320M-APRO(MS-7C51):rvr1.0:cvnMicro-StarInternationalCo.,Ltd.:ct3:cvr1.0:skuTobefilledbyO.E.M.:
dmi.product.family: To be filled by O.E.M.
dmi.product.name: MS-7C51
dmi.product.sku: To be filled by O.E.M.
dmi.product.version: 1.0
dmi.sys.vendor: Micro-Star International Co., Ltd.
hciconfig:
hci0: Type: Primary Bus: USB
BD Address: 00:A7:45:28:00:B3 ACL MTU: 0:0 SCO MTU: 0:0
DOWN
RX bytes:165 acl:0 sco:0 events:9 errors:0
TX bytes:273 acl:0 sco:0 commands:10 errors:0
rfkill:
2: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
** Affects: bluez (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug noble
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https://bugs.launchpad.net/bugs/2076407
Title:
Title: Bluetooth 5.4 Adapter (Ugreen CM749) Not Functioning on Ubuntu
20.04 with Kernel 6.x Description: The Bluetooth 5.4 adapter Ugreen
CM749 is not functioning on Ubuntu 20.04 with Kernel 6.x. The adapter
is detected by the system but fails to initialize, showing a
"Connection timed out (110)" error when attempting to bring up the
interface. The Bluetooth 5.0 dongle works without issues on the same
system. Steps to Reproduce: 1. Plugged in the Ugreen CM749 Bluetooth
5.4 adapter. 2. Ran `hciconfig hci0 up` to bring up the Bluetooth
interface. 3. Observed the error "Connection timed out (110)" in the
terminal. 4. Checked the dmesg logs and found repeated Bluetooth
errors. Expected Behavior: The Bluetooth 5.4 adapter should
initialize correctly, allowing for Bluetooth functionality such as
pairing and connecting devices. Actual Behavior: The Bluetooth 5.4
adapter fails to initialize, with the interface staying down and
connection attempts timing out. Additional Information: - Kernel
Version: 6.10.2-061002-generic - Ubuntu Version: 20.04 - Hardware
Information: *-network:1 description: Bluetooth device
product: Realtek Bluetooth Adapter vendor: Realtek
Semiconductor Co., Ltd. physical id: 0 bus info: usb@1:1
version: 1.00 - dmesg Output: [12345.6789] Bluetooth: hci0: Opcode
0x1005 failed: -110 - hciconfig Output: hci0: Type: Primary Bus: USB
BD Address: 00:A7:45:28:00:B3 ACL MTU: 0:0 SCO MTU: 0:0 DOWN RX
bytes:171 acl:0 sco:0 events:10 errors:0 TX bytes:276 acl:0 sco:0
commands:11 errors:0
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