voici le retour :
bruno@bruno-System-Product-Name:~$ uname -a; lspci -nnk | grep -iA2 net; lsusb; dmesg | grep -i bluetooth; dmesg | grep -i firmware; lsmod | grep bluetooth
Linux bruno-System-Product-Name 4.13.0-39-generic #44-Ubuntu SMP Thu Apr 5 14:25:01 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
02:00.0 Ethernet controller [0200]: Qualcomm Atheros AR8121/AR8113/AR8114 Gigabit or Fast Ethernet [1969:1026] (rev b0)
Subsystem: ASUSTeK Computer Inc. AR8121/AR8113/AR8114 Gigabit or Fast Ethernet [1043:8226]
Kernel driver in use: ATL1E
Kernel modules: atl1e
Bus 002 Device 006: ID 05e3:0608 Genesys Logic, Inc. Hub
Bus 002 Device 004: ID 1a40:0101 Terminus Technology Inc. Hub
Bus 002 Device 003: ID 1a40:0101 Terminus Technology Inc. Hub
Bus 002 Device 002: ID 04f9:02a0 Brother Industries, Ltd
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 008 Device 002: ID 046d:c52e Logitech, Inc. MK260 Wireless Combo Receiver
Bus 008 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 002: ID 0a12:0001 Cambridge Silicon Radio, Ltd Bluetooth Dongle (HCI mode)
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
bluetooth 544768 49 btrtl,btintel,bnep,btbcm,rfcomm,btusb
ecdh_generic 24576 1 bluetooth