Salut xubu1957,
romainhelo@romainhelo-All-Series:~$ uname -a; lspci -nnk | grep -iA3 net; lsusb; dmesg | grep -i bluetooth; dmesg | grep -i firmware; lsmod | grep bluetooth
Linux romainhelo-All-Series 5.4.0-53-generic #59-Ubuntu SMP Wed Oct 21 09:38:44 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
03:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 11)
Subsystem: ASUSTeK Computer Inc. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [1043:859e]
Kernel driver in use: r8169
Kernel modules: r8169
04:00.0 PCI bridge [0604]: ASMedia Technology Inc. ASM1083/1085 PCIe to PCI Bridge [1b21:1080] (rev 04)
06:00.0 Network controller [0280]: Intel Corporation Wi-Fi 6 AX200 [8086:2723] (rev 1a)
Subsystem: Intel Corporation Wi-Fi 6 AX200 [8086:0088]
Kernel driver in use: iwlwifi
Kernel modules: iwlwifi
Bus 002 Device 002: ID 8087:8001 Intel Corp.
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 8087:8009 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 002: ID 8087:0029 Intel Corp.
Bus 003 Device 004: ID 1d57:ffa4 Xenta 2.4G Receiver
Bus 003 Device 003: ID 046d:c534 Logitech, Inc. Unifying Receiver
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
[ 89.971697] Bluetooth: Core ver 2.22
[ 89.971752] Bluetooth: HCI device and connection manager initialized
[ 89.971755] Bluetooth: HCI socket layer initialized
[ 89.971757] Bluetooth: L2CAP socket layer initialized
[ 89.971760] Bluetooth: SCO socket layer initialized
[ 90.117365] Bluetooth: hci0: Bootloader revision 0.3 build 0 week 24 2017
[ 90.118323] Bluetooth: hci0: Device revision is 1
[ 90.118324] Bluetooth: hci0: Secure boot is enabled
[ 90.118324] Bluetooth: hci0: OTP lock is enabled
[ 90.118324] Bluetooth: hci0: API lock is enabled
[ 90.118325] Bluetooth: hci0: Debug lock is disabled
[ 90.118325] Bluetooth: hci0: Minimum firmware build 1 week 10 2014
[ 90.121096] Bluetooth: hci0: Found device firmware: intel/ibt-20-1-3.sfi
[ 90.144674] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 90.144675] Bluetooth: BNEP filters: protocol multicast
[ 90.144678] Bluetooth: BNEP socket layer initialized
[ 91.616202] Bluetooth: hci0: Waiting for firmware download to complete
[ 91.616276] Bluetooth: hci0: Firmware loaded in 1468550 usecs
[ 91.616341] Bluetooth: hci0: Waiting for device to boot
[ 91.630283] Bluetooth: hci0: Device booted in 13653 usecs
[ 91.631645] Bluetooth: hci0: Found Intel DDC parameters: intel/ibt-20-1-3.ddc
[ 91.632286] Bluetooth: hci0: Failed to send Intel_Write_DDC (-22)
[ 284.677607] Bluetooth: RFCOMM TTY layer initialized
[ 284.677612] Bluetooth: RFCOMM socket layer initialized
[ 284.677615] Bluetooth: RFCOMM ver 1.11
[ 0.144504] Spectre V2 : Enabling Restricted Speculation for firmware calls
[ 88.071090] iwlwifi 0000:06:00.0: Direct firmware load for iwl-dbg-cfg.ini failed with error -2
[ 88.071314] iwlwifi 0000:06:00.0: Direct firmware load for iwlwifi-cc-a0-55.ucode failed with error -2
[ 88.071329] iwlwifi 0000:06:00.0: Direct firmware load for iwlwifi-cc-a0-54.ucode failed with error -2
[ 88.071464] iwlwifi 0000:06:00.0: Direct firmware load for iwlwifi-cc-a0-53.ucode failed with error -2
[ 88.071702] iwlwifi 0000:06:00.0: Direct firmware load for iwlwifi-cc-a0-52.ucode failed with error -2
[ 88.071713] iwlwifi 0000:06:00.0: Direct firmware load for iwlwifi-cc-a0-51.ucode failed with error -2
[ 88.071724] iwlwifi 0000:06:00.0: Direct firmware load for iwlwifi-cc-a0-50.ucode failed with error -2
[ 88.071733] iwlwifi 0000:06:00.0: Direct firmware load for iwlwifi-cc-a0-49.ucode failed with error -2
[ 88.076786] iwlwifi 0000:06:00.0: loaded firmware version 48.4fa0041f.0 cc-a0-48.ucode op_mode iwlmvm
[ 88.076813] iwlwifi 0000:06:00.0: Direct firmware load for iwl-debug-yoyo.bin failed with error -2
[ 88.109466] iwlwifi 0000:06:00.0: Allocated 0x00400000 bytes for firmware monitor.
[ 90.118325] Bluetooth: hci0: Minimum firmware build 1 week 10 2014
[ 90.121096] Bluetooth: hci0: Found device firmware: intel/ibt-20-1-3.sfi
[ 91.616202] Bluetooth: hci0: Waiting for firmware download to complete
[ 91.616276] Bluetooth: hci0: Firmware loaded in 1468550 usecs
bluetooth 548864 41 btrtl,btintel,btbcm,bnep,btusb,rfcomm
ecdh_generic 16384 2 bluetooth
romainhelo@romainhelo-All-Series:~$ sudo service bluetooth status
[sudo] Mot de passe de romainhelo :
● bluetooth.service - Bluetooth service
Loaded: loaded (/lib/systemd/system/bluetooth.service; enabled; vendor pre>
Active: active (running) since Sun 2020-11-15 09:23:42 CET; 5min ago
Docs: man:bluetoothd(8)
Main PID: 1680 (bluetoothd)
Status: "Running"
Tasks: 1 (limit: 19003)
Memory: 2.4M
CGroup: /system.slice/bluetooth.service
└─1680 /usr/lib/bluetooth/bluetoothd
nov. 15 09:23:42 romainhelo-All-Series systemd[1]: Starting Bluetooth service...
nov. 15 09:23:42 romainhelo-All-Series bluetoothd[1680]: Bluetooth daemon 5.53
nov. 15 09:23:42 romainhelo-All-Series systemd[1]: Started Bluetooth service.
nov. 15 09:23:42 romainhelo-All-Series bluetoothd[1680]: Starting SDP server
nov. 15 09:23:42 romainhelo-All-Series bluetoothd[1680]: Bluetooth management i>
nov. 15 09:26:56 romainhelo-All-Series bluetoothd[1680]: Endpoint registered: s>
nov. 15 09:26:56 romainhelo-All-Series bluetoothd[1680]: Endpoint registered: s>
lines 1-18/18 (END)
romainhelo@romainhelo-All-Series:~$ dpkg -l | grep blue
ii blueman 2.1.2-1ubuntu0.2 amd64 Graphical bluetooth manager
ii bluetooth 5.53-0ubuntu3 all Bluetooth support
ii bluez 5.53-0ubuntu3 amd64 Bluetooth tools and daemons
ii bluez-cups 5.53-0ubuntu3 amd64 Bluetooth printer driver for CUPS
ii bluez-dbg 5.53-0ubuntu3 amd64 Bluetooth tools and daemons (with debugging symbols)
ii bluez-obexd 5.53-0ubuntu3 amd64 bluez obex daemon
ii bluez-tools 2.0~20170911.0.7cb788c-2build1 amd64 Set of tools to manage Bluetooth devices for linux
ii gir1.2-gnomebluetooth-1.0:amd64 3.34.3-0ubuntu1 amd64 Introspection data for GnomeBluetooth
ii gnome-bluetooth 3.34.3-0ubuntu1 amd64 GNOME Bluetooth tools
ii indicator-bluetooth 0.0.6+17.10.20170605-0ubuntu3 amd64 System bluetooth indicator.
ii libbluetooth-dev 5.53-0ubuntu3 amd64 Development files for using the BlueZ Linux Bluetooth library
ii libbluetooth3:amd64 5.53-0ubuntu3 amd64 Library to use the BlueZ Linux Bluetooth stack
ii libbluetooth3-dbg 5.53-0ubuntu3 amd64 Library to use the BlueZ Linux Bluetooth stack with debugging symbols
ii libgnome-bluetooth13:amd64 3.34.3-0ubuntu1 amd64 GNOME Bluetooth tools - support library
ii libkf5bluezqt-data 5.68.0-0ubuntu1 all data files for bluez-qt
ii libkf5bluezqt6:amd64 5.68.0-0ubuntu1 amd64 Qt wrapper for bluez
ii libqt5bluetooth5:amd64 5.12.8-0ubuntu1 amd64 Qt Connectivity Bluetooth module
ii libqt5bluetooth5-bin 5.12.8-0ubuntu1 amd64 Qt Connectivity Bluetooth module helper binaries
ii pulseaudio-module-bluetooth 1:13.99.1-1ubuntu3.7 amd64 Bluetooth module for PulseAudio sound server
ii python-bluez 0.22+really0.22-1build2 amd64 Python 2 wrappers around BlueZ for rapid bluetooth development
ii qml-module-org-kde-bluezqt:amd64 5.68.0-0ubuntu1 amd64 QML wrapper for bluez
romainhelo@romainhelo-All-Series:~$ rfkill list all
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
1: hci0: Bluetooth
Soft blocked: no
Hard blocked: no