[SOLVED] UGREEN Bluetooth 5 USB adapter with RTL8761BUV

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Babur
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Joined: Sat Jan 22, 2022 3:40 am

[SOLVED] UGREEN Bluetooth 5 USB adapter with RTL8761BUV

Post by Babur »

Hi:

I've been struggling to make this RTL8761BUV based bluetooth usb connector work on Linux Mint 20.3, with kernel 5.4.0-96-generic.

So far I've tried every solution I could find on forums but nothing works.

Info about current status of the system is given below. Any help will be much appreciated.

Code: Select all

❯
❯ dmesg | grep -i blue                     
[    1.107043] usb 3-3: Product: Bluetooth Radio
[    4.892750] Bluetooth: Core ver 2.22
[    4.892775] Bluetooth: HCI device and connection manager initialized
[    4.892779] Bluetooth: HCI socket layer initialized
[    4.892782] Bluetooth: L2CAP socket layer initialized
[    4.892788] Bluetooth: SCO socket layer initialized
[    4.919262] Bluetooth: hci0: RTL: examining hci_ver=0a hci_rev=000b lmp_ver=0a lmp_subver=8761
[    4.920250] Bluetooth: hci0: RTL: rom_version status=0 version=1
[    4.920251] Bluetooth: hci0: RTL: loading rtl_bt/rtl8761a_fw.bin
[    4.922685] Bluetooth: hci0: RTL: loading rtl_bt/rtl8761a_config.bin
[    4.922858] Bluetooth: hci0: RTL: cfg_sz 44, total sz 14808
[    5.728043] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[    5.728044] Bluetooth: BNEP filters: protocol multicast
[    5.728048] Bluetooth: BNEP socket layer initialized
[    7.010181] Bluetooth: hci0: command 0xfc20 tx timeout
[   15.202196] Bluetooth: hci0: RTL: download fw command failed (-110)

Code: Select all

❯ systemctl | grep -i blue                 
  sys-devices-pci0000:00-0000:00:14.0-usb3-3\x2d3-3\x2d3:1.0-bluetooth-hci0.device         loaded active plugged   /sys/devices/pci0000:00/0000:00:14.0/usb3/3-3/3-3:1.0/bluetooth/hci0                            
  sys-subsystem-bluetooth-devices-hci0.device                                              loaded active plugged   /sys/subsystem/bluetooth/devices/hci0                                                           
  bluetooth.service                                                                        loaded active running   Bluetooth service                                                                               
  bluetooth.target                                                                         loaded active active    Bluetooth

Code: Select all

❯ sudo /etc/init.d/bluetooth status

[sudo] password for babur:          
● bluetooth.service - Bluetooth service
     Loaded: loaded (/lib/systemd/system/bluetooth.service; enabled; vendor preset: enabled)
     Active: active (running) since Sat 2022-01-22 22:36:55 PST; 11min ago
       Docs: man:bluetoothd(8)
   Main PID: 910 (bluetoothd)
     Status: "Running"
      Tasks: 1 (limit: 18987)
     Memory: 2.3M
     CGroup: /system.slice/bluetooth.service
             └─910 /usr/lib/bluetooth/bluetoothd

Jan 22 22:36:55 LM203J22 systemd[1]: Starting Bluetooth service...
Jan 22 22:36:55 LM203J22 bluetoothd[910]: Bluetooth daemon 5.53
Jan 22 22:36:55 LM203J22 systemd[1]: Started Bluetooth service.
Jan 22 22:36:55 LM203J22 bluetoothd[910]: Starting SDP server
Jan 22 22:36:55 LM203J22 bluetoothd[910]: Bluetooth management interface 1.14 initialized
Jan 22 22:37:04 LM203J22 bluetoothd[910]: No Bluetooth address for index 0
Hint: Some lines were ellipsized, use -l to show in full.

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❯ lsusb && lspci && rfkill list all && mokutil --sb-state
Bus 002 Device 002: ID 8087:8000 Intel Corp. 
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 8087:8008 Intel Corp. 
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 003: ID 046d:c534 Logitech, Inc. Unifying Receiver
Bus 003 Device 002: ID 0bda:8771 Realtek Semiconductor Corp. Bluetooth Radio
Bus 003 Device 004: ID 0930:1400 Toshiba Corp. Memory Stick 2GB
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
00:00.0 Host bridge: Intel Corporation 4th Gen Core Processor DRAM Controller (rev 06)
00:01.0 PCI bridge: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor PCI Express x16 Controller (rev 06)
00:14.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB xHCI (rev 05)
00:16.0 Communication controller: Intel Corporation 8 Series/C220 Series Chipset Family MEI Controller #1 (rev 04)
00:16.3 Serial controller: Intel Corporation 8 Series/C220 Series Chipset Family KT Controller (rev 04)
00:19.0 Ethernet controller: Intel Corporation Ethernet Connection I217-LM (rev 05)
00:1a.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB EHCI #2 (rev 05)
00:1b.0 Audio device: Intel Corporation 8 Series/C220 Series Chipset High Definition Audio Controller (rev 05)
00:1c.0 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #1 (rev d5)
00:1c.4 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #5 (rev d5)
00:1d.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB EHCI #1 (rev 05)
00:1f.0 ISA bridge: Intel Corporation Q87 Express LPC Controller (rev 05)
00:1f.2 SATA controller: Intel Corporation 8 Series/C220 Series Chipset Family 6-port SATA Controller 1 [AHCI mode] (rev 05)
00:1f.3 SMBus: Intel Corporation 8 Series/C220 Series Chipset Family SMBus Controller (rev 05)
01:00.0 VGA compatible controller: NVIDIA Corporation GM107 [GeForce GTX 750 Ti] (rev a2)
01:00.1 Audio device: NVIDIA Corporation GM107 High Definition Audio Controller [GeForce 940MX] (rev a1)
03:00.0 Network controller: Qualcomm Atheros AR9285 Wireless Network Adapter (PCI-Express) (rev 01)
0: hci0: Bluetooth
	Soft blocked: no
	Hard blocked: no
1: phy0: Wireless LAN
	Soft blocked: no
	Hard blocked: no
SecureBoot disabled
Last edited by LockBot on Wed Dec 28, 2022 7:16 am, edited 3 times in total.
Reason: Topic automatically closed 6 months after creation. New replies are no longer allowed.
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Babur
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Posts: 2
Joined: Sat Jan 22, 2022 3:40 am

Re: UGREEN Bluetooth 5 USB adapter with RTL8761BUV

Post by Babur »

Well, switch to kernel 5.13.0-27-generic, rebooting, and re-plugging the dongle fixed the issue.

Code: Select all

❯ sudo /etc/init.d/bluetooth status
[sudo] password for babur:          
● bluetooth.service - Bluetooth service
     Loaded: loaded (/lib/systemd/system/bluetooth.service; enabled; vendor preset: enabled)
     Active: active (running) since Mon 2022-01-24 06:39:35 PST; 7min ago
       Docs: man:bluetoothd(8)
   Main PID: 890 (bluetoothd)
     Status: "Running"
      Tasks: 1 (limit: 18961)
     Memory: 2.2M
     CGroup: /system.slice/bluetooth.service
             └─890 /usr/lib/bluetooth/bluetoothd

Jan 24 06:39:35 LM203J22 systemd[1]: Starting Bluetooth service...
Jan 24 06:39:35 LM203J22 bluetoothd[890]: Bluetooth daemon 5.53
Jan 24 06:39:35 LM203J22 systemd[1]: Started Bluetooth service.
Jan 24 06:39:35 LM203J22 bluetoothd[890]: Starting SDP server
Jan 24 06:39:35 LM203J22 bluetoothd[890]: Bluetooth management interface 1.20 initialized
Jan 24 06:41:19 LM203J22 bluetoothd[890]: Endpoint registered: sender=:1.47 path=/Me…k/sbc
Jan 24 06:41:19 LM203J22 bluetoothd[890]: Endpoint registered: sender=:1.47 path=/Me…e/sbc
Jan 24 06:42:05 LM203J22 bluetoothd[890]: /org/bluez/hci0/dev_00_22_37_58_B7_15/sep1…ready
Hint: Some lines were ellipsized, use -l to show in full.
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mrandredparis
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Posts: 35
Joined: Fri Jul 20, 2012 1:18 pm

Re: [SOLVED] UGREEN Bluetooth 5 USB adapter with RTL8761BUV

Post by mrandredparis »

Once the driver is installed I find that I can't access the internet, whether I have a plugged in connection, USB tether from my phone or wifi, plus my nvidia driver is disabled. I guess I will just have to wait until the official latest kernel comes out as I am still too much of n00b to figure out how to fix the problems
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