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

[maestrom4]

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

[maestrom4 (dnlmts96)]

lsusb
Bus 001 Device 002: ID 0bda:8771 Realtek Semiconductor Corp. Bluetooth Radio
Bus 001 Device 002: ID 0bda:8771 Realtek Semiconductor Corp.
Device Descriptor:
  bLength 18
  bDescriptorType 1
  bcdUSB 2.10
  bDeviceClass 224 Wireless
  bDeviceSubClass 1 Radio Frequency
  bDeviceProtocol 1 Bluetooth
  bMaxPacketSize0 64
  idVendor 0x0bda Realtek Semiconductor Corp.
  idProduct 0x8771
  bcdDevice 0.02
  iManufacturer 1 Realtek
  iProduct 2 Bluetooth Radio
  iSerial 3 00A7452800B3
  bNumConfigurations 1

[12345.6789] Bluetooth: hci0: Opcode 0x1005 failed: -110
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