kvm:~ # uname -a
Linux kvm 4.4.132-53-default #1 SMP Wed May 23 06:57:07 UTC 2018 (036cd2f) x86_64 x86_64 x86_64 GNU/Linux
kvm:~ #
kvm:~ # dmesg|grep -i blue
47.360060] Bluetooth: Core ver 2.21
47.360077] Bluetooth: HCI device and connection manager initialized
47.360080] Bluetooth: HCI socket layer initialized
47.360083] Bluetooth: L2CAP socket layer initialized
47.360088] Bluetooth: SCO socket layer initialized
47.365001] Bluetooth: Configuration file not found ar3k/ramps_0x00000200_0.dfu
47.365002] Bluetooth: Loading sysconfig file failed
81.893102] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
81.893103] Bluetooth: BNEP filters: protocol multicast
81.893106] Bluetooth: BNEP socket layer initialized
kvm:~ #
kvm:~ # lsmod |grep blue
bluetooth 528384 10 bnep,ath3k,btbcm,btrtl,btusb,btintel
rfkill 28672 8 cfg80211,bluetooth
crc16 16384 1 bluetooth
kvm:~ #
More info (bolded is the bluetooth):
kvm:~ # lsusb
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 002: ID 0bda:0129 Realtek Semiconductor Corp. RTS5129 Card Reader Controller
Bus 001 Device 004: ID 5986:055c Acer, Inc
**Bus 001 Device 003: ID 0cf3:3004 Atheros Communications, Inc.**
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
kvm:~ #
Looking at /sys/kernel/debug/usb/devices
T: Bus=01 Lev=01 Prnt=01 Port=09 Cnt=02 Dev#= 3 Spd=12 MxCh= 0
D: Ver= 1.10 Cls=e0(wlcon) Sub=01 Prot=01 MxPS=64 #Cfgs= 1
P: Vendor=0cf3 ProdID=3004 Rev= 0.01
C:* #Ifs= 2 Cfg#= 1 Atr=e0 MxPwr=100mA
I:* If#= 0 Alt= 0 #EPs= 3 Cls=e0(wlcon) Sub=01 Prot=01 Driver=(none)
E: Ad=81(I) Atr=03(Int.) MxPS= 16 Ivl=1ms
E: Ad=82(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms
E: Ad=02(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms
I:* If#= 1 Alt= 0 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=(none)
E: Ad=83(I) Atr=01(Isoc) MxPS= 0 Ivl=1ms
E: Ad=03(O) Atr=01(Isoc) MxPS= 0 Ivl=1ms
I: If#= 1 Alt= 1 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=(none)
E: Ad=83(I) Atr=01(Isoc) MxPS= 9 Ivl=1ms
E: Ad=03(O) Atr=01(Isoc) MxPS= 9 Ivl=1ms
I: If#= 1 Alt= 2 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=(none)
E: Ad=83(I) Atr=01(Isoc) MxPS= 17 Ivl=1ms
E: Ad=03(O) Atr=01(Isoc) MxPS= 17 Ivl=1ms
I: If#= 1 Alt= 3 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=(none)
E: Ad=83(I) Atr=01(Isoc) MxPS= 25 Ivl=1ms
E: Ad=03(O) Atr=01(Isoc) MxPS= 25 Ivl=1ms
I: If#= 1 Alt= 4 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=(none)
E: Ad=83(I) Atr=01(Isoc) MxPS= 33 Ivl=1ms
E: Ad=03(O) Atr=01(Isoc) MxPS= 33 Ivl=1ms
I: If#= 1 Alt= 5 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=(none)
E: Ad=83(I) Atr=01(Isoc) MxPS= 49 Ivl=1ms
E: Ad=03(O) Atr=01(Isoc) MxPS= 49 Ivl=1ms
kvm:~ # hwinfo --bluetooth
05: USB 00.0: 11500 Bluetooth Device
[Created at usb.122]
Unique ID: fHJ1.tx4ZIeIPK4B
Parent ID: k4bc.2DFUsyrieMD
SysFS ID: /devices/pci0000:00/0000:00:14.0/usb1/1-10/1-10:1.0
SysFS BusID: 1-10:1.0
Hardware Class: bluetooth
Model: "Qualcomm Atheros AR3012 Bluetooth 4.0"
Hotplug: USB
Vendor: usb 0x0cf3 "Qualcomm Atheros Communications"
Device: usb 0x3004 "AR3012 Bluetooth 4.0"
Revision: "0.01"
Speed: 12 Mbps
Module Alias: "usb:v0CF3p3004d0001dcE0dsc01dp01icE0isc01ip01in00"
Driver Info #0:
Driver Status: ath3k is active
Driver Activation Cmd: "modprobe ath3k"
Driver Info #1:
Driver Status: btusb is active
Driver Activation Cmd: "modprobe btusb"
Config Status: cfg=new, avail=yes, need=no, active=unknown
Attached to: #3 (Hub)
kvm:~ #