voici mon dialogue avec la commande :
florent@florent-iMac:~$ uname -a; lsusb; dmesg | grep -i bluetooth; dmesg | grep -i firmware; lsmod | grep bluetooth
Linux florent-iMac 5.3.0-62-generic #56~18.04.1-Ubuntu SMP Wed Jun 24 16:17:03 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
Bus 002 Device 002: ID 1058:25a1 Western Digital Technologies, Inc.
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 007: ID 05ac:828d Apple, Inc.
Bus 001 Device 004: ID 0a5c:4500 Broadcom Corp. BCM2046B1 USB 2.0 Hub (part of BCM2046 Bluetooth)
Bus 001 Device 003: ID 05ac:8511 Apple, Inc.
Bus 001 Device 002: ID 046d:c077 Logitech, Inc. M105 Optical Mouse
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
[ 2.662150] usb 1-8.3: Product: Bluetooth USB Host Controller
[ 10.896479] Bluetooth: Core ver 2.22
[ 10.896492] Bluetooth: HCI device and connection manager initialized
[ 10.896494] Bluetooth: HCI socket layer initialized
[ 10.896495] Bluetooth: L2CAP socket layer initialized
[ 10.896497] Bluetooth: SCO socket layer initialized
[ 11.458327] Bluetooth: hci0: BCM: chip id 73 build 1125
[ 11.459304] Bluetooth: hci0: BCM: product 05ac:828d
[ 11.460313] Bluetooth: hci0: BCM: features 0x07
[ 11.476304] Bluetooth: hci0: BCM20702B0 Generic USB Class 1 @ 20 MHz
[ 20.511929] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 20.511930] Bluetooth: BNEP filters: protocol multicast
[ 20.511933] Bluetooth: BNEP socket layer initialized
[ 24.080341] Bluetooth: HIDP (Human Interface Emulation) ver 1.2
[ 24.080345] Bluetooth: HIDP socket layer initialized
[ 24.546451] input: Apple Wireless Keyboard as /devices/pci0000:00/0000:00:14.0/usb1/1-8/1-8.3/1-8.3:1.0/bluetooth/hci0/hci0:11/0005:05AC:0256.0004/input/input11
[ 24.546975] apple 0005:05AC:0256.0004: input,hidraw1: BLUETOOTH HID v0.50 Keyboard [Apple Wireless Keyboard] on c8:e0:eb:3a:44:1a
[ 0.102650] Spectre V2 : Enabling Restricted Speculation for firmware calls
[ 0.121468] ACPI: [Firmware Bug]: BIOS _OSI(Linux) query ignored
[ 0.131646] acpi PNP0A08:00: [Firmware Info]: MMCONFIG for domain 0000 [bus 00-9b] only partially covers this bridge
[ 0.972608] [Firmware Bug]: ACPI(GFX0) defines _DOD but not _DOS
bluetooth 573440 33 btrtl,hidp,btintel,btbcm,bnep,btusb
ecdh_generic 16384 2 bluetooth
florent@florent-iMac:~$ sudo service bluetooth status
[sudo] Mot de passe de florent :
● bluetooth.service - Bluetooth service
Loaded: loaded (/lib/systemd/system/bluetooth.service; enabled; vendor preset
Active: active (running) since Sat 2020-07-18 09:54:05 CEST; 2h 11min ago
Docs: man:bluetoothd(8)
Main PID: 973 (bluetoothd)
Status: "Running"
Tasks: 1 (limit: 4915)
CGroup: /system.slice/bluetooth.service
└─973 /usr/lib/bluetooth/bluetoothd
juil. 18 09:54:04 florent-iMac systemd[1]: Starting Bluetooth service...
juil. 18 09:54:05 florent-iMac bluetoothd[973]: Bluetooth daemon 5.48
juil. 18 09:54:05 florent-iMac systemd[1]: Started Bluetooth service.
juil. 18 09:54:05 florent-iMac bluetoothd[973]: Starting SDP server
juil. 18 09:54:06 florent-iMac bluetoothd[973]: Bluetooth management interface 1
florent@florent-iMac:~$ dpkg -l | grep blue
ii bluez 5.48-0ubuntu3.4 amd64 Bluetooth tools and daemons
ii bluez-cups 5.48-0ubuntu3.4 amd64 Bluetooth printer driver for CUPS
ii bluez-obexd 5.48-0ubuntu3.4 amd64 bluez obex daemon
ii gir1.2-gnomebluetooth-1.0:amd64 3.28.0-2ubuntu0.2 amd64 Introspection data for GnomeBluetooth
ii gnome-bluetooth 3.28.0-2ubuntu0.2 amd64 GNOME Bluetooth tools
ii libbluetooth3:amd64 5.48-0ubuntu3.4 amd64 Library to use the BlueZ Linux Bluetooth stack
ii libgnome-bluetooth13:amd64 3.28.0-2ubuntu0.2 amd64 GNOME Bluetooth tools - support library
ii python-bluez 0.22-1 amd64 Python wrappers around BlueZ for rapid bluetooth development
florent@florent-iMac:~$ rfkill list all
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
1: brcmwl-0: Wireless LAN
Soft blocked: no
Hard blocked: no
2: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
florent@florent-iMac:~$
la ca depasse ma faible comprehension...