stick bluetooth v5 not find any device, but in windows 10 perfect work
sudo dmesg | grep Bluetooth
[ 4.100953] Bluetooth: Core ver 2.22
[ 4.100975] Bluetooth: HCI device and connection manager initialized
[ 4.100981] Bluetooth: HCI socket layer initialized
[ 4.100982] Bluetooth: L2CAP socket layer initialized
[ 4.100985] Bluetooth: SCO socket layer initialized
[ 4.117743] Bluetooth: hci0: CSR: Unbranded CSR clone detected; adding workarounds…
[ 10.935864] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 10.935867] Bluetooth: BNEP filters: protocol multicast
[ 10.935870] Bluetooth: BNEP socket layer initialized
[ 21.988025] Bluetooth: RFCOMM TTY layer initialized
[ 21.988032] Bluetooth: RFCOMM socket layer initialized
[ 21.988036] Bluetooth: RFCOMM ver 1.11
[ 46.017016] Bluetooth: hci0: command 0x2005 tx timeout
[ 48.147321] Bluetooth: hci0: command 0x200b tx timeout
[ 50.278079] Bluetooth: hci0: command 0x200c tx timeout
rfkill list all
0: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
systemctl status bluetooth.service
● bluetooth.service - Bluetooth service
Loaded: loaded (/usr/lib/systemd/system/bluetooth.service; enabled; vendor preset: disabled)
Active: active (running) since Tue 2021-08-17 15:26:30 MSK; 8min ago
Docs: man:bluetoothd(8)
Main PID: 622 (bluetoothd)
Status: “Running”
Tasks: 1 (limit: 23812)
Memory: 2.1M
CPU: 20ms
CGroup: /system.slice/bluetooth.service
└─622 /usr/lib/bluetooth/bluetoothd
авг 17 15:31:03 sergey-pc bluetoothd[622]: Endpoint unregistered: sender=:1.47 path=/MediaEndpoint/A2DPSink/sbc_xq_552
авг 17 15:31:03 sergey-pc bluetoothd[622]: Endpoint unregistered: sender=:1.47 path=/MediaEndpoint/A2DPSource/sbc_xq_552
авг 17 15:31:09 sergey-pc bluetoothd[622]: Endpoint registered: sender=:1.47 path=/MediaEndpoint/A2DPSink/sbc
авг 17 15:31:09 sergey-pc bluetoothd[622]: Endpoint registered: sender=:1.47 path=/MediaEndpoint/A2DPSource/sbc
авг 17 15:31:09 sergey-pc bluetoothd[622]: Endpoint registered: sender=:1.47 path=/MediaEndpoint/A2DPSink/sbc_xq_453
авг 17 15:31:09 sergey-pc bluetoothd[622]: Endpoint registered: sender=:1.47 path=/MediaEndpoint/A2DPSource/sbc_xq_453
авг 17 15:31:09 sergey-pc bluetoothd[622]: Endpoint registered: sender=:1.47 path=/MediaEndpoint/A2DPSink/sbc_xq_512
авг 17 15:31:09 sergey-pc bluetoothd[622]: Endpoint registered: sender=:1.47 path=/MediaEndpoint/A2DPSource/sbc_xq_512
авг 17 15:31:09 sergey-pc bluetoothd[622]: Endpoint registered: sender=:1.47 path=/MediaEndpoint/A2DPSink/sbc_xq_552
авг 17 15:31:09 sergey-pc bluetoothd[622]: Endpoint registered: sender=:1.47 path=/MediaEndpoint/A2DPSource/sbc_xq_552
lsusb
Bus 002 Device 002: ID 8087:8000 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 8087:8008 Intel Corp. Integrated Rate Matching Hub
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 004: ID 0a12:0001 Cambridge Silicon Radio, Ltd Bluetooth Dongle (HCI mode)
Bus 003 Device 003: ID 046d:c31c Logitech, Inc. Keyboard K120
Bus 003 Device 002: ID 09da:9090 A4Tech Co., Ltd. XL-730K / XL-750BK / XL-755BK Mice
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub