gege@gege-Aspire-7740:~$ uname -a; lspci -nnk | grep -iA3 net; lsusb; dmesg | grep -i bluetooth; dmesg | grep -i firmware; lsmod | grep bluetooth
Linux gege-Aspire-7740 5.4.0-47-generic #51-Ubuntu SMP Fri Sep 4 19:50:52 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
03:00.0 Ethernet controller [0200]: Broadcom Inc. and subsidiaries NetLink BCM57780 Gigabit Ethernet PCIe [14e4:1692] (rev 01)
Subsystem: Acer Incorporated [ALI] Aspire 7740G [1025:033d]
Kernel driver in use: tg3
Kernel modules: tg3
05:00.0 Network controller [0280]: Qualcomm Atheros AR928X Wireless Network Adapter (PCI-Express) [168c:002a] (rev 01)
Subsystem: Foxconn International, Inc. T77H047.31 802.11bgn Wireless Half-size Mini PCIe Card [AR9283] [105b:e01f]
Kernel driver in use: ath9k
Kernel modules: ath9k
Bus 002 Device 005: ID 064e:a103 Suyin Corp. Acer/HP Integrated Webcam [CN0314]
Bus 002 Device 004: ID 046d:c52f Logitech, Inc. Unifying Receiver
Bus 002 Device 010: ID 0a12:0001 Cambridge Silicon Radio, Ltd Bluetooth Dongle (HCI mode)
Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
[ 27.035573] Bluetooth: Core ver 2.22
[ 27.035601] Bluetooth: HCI device and connection manager initialized
[ 27.035607] Bluetooth: HCI socket layer initialized
[ 27.035609] Bluetooth: L2CAP socket layer initialized
[ 27.035613] Bluetooth: SCO socket layer initialized
[ 52.393626] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 52.393628] Bluetooth: BNEP filters: protocol multicast
[ 52.393634] Bluetooth: BNEP socket layer initialized
[ 90.506907] Bluetooth: RFCOMM TTY layer initialized
[ 90.506918] Bluetooth: RFCOMM socket layer initialized
[ 90.506927] Bluetooth: RFCOMM ver 1.11
[ 2244.261159] Bluetooth: hci0: SCO packet for unknown connection handle 65
[ 2244.261166] Bluetooth: hci0: SCO packet for unknown connection handle 65
[ 2244.261170] Bluetooth: hci0: SCO packet for unknown connection handle 65
[ 2244.261174] Bluetooth: hci0: SCO packet for unknown connection handle 65
[ 2244.261177] Bluetooth: hci0: SCO packet for unknown connection handle 65
[ 3098.656152] Bluetooth: hci0: SCO packet for unknown connection handle 62
[ 3098.656158] Bluetooth: hci0: SCO packet for unknown connection handle 62
[ 3098.656161] Bluetooth: hci0: SCO packet for unknown connection handle 62
[ 3098.656165] Bluetooth: hci0: SCO packet for unknown connection handle 62
[ 3099.836083] Bluetooth: hci0: SCO packet for unknown connection handle 70
[ 3099.836090] Bluetooth: hci0: SCO packet for unknown connection handle 70
[ 3099.836093] Bluetooth: hci0: SCO packet for unknown connection handle 70
[ 4399.665689] Bluetooth: hci0: SCO packet for unknown connection handle 64
[ 4399.665697] Bluetooth: hci0: SCO packet for unknown connection handle 64
[ 4582.276731] Bluetooth: hci0: SCO packet for unknown connection handle 71
[ 4582.276740] Bluetooth: hci0: SCO packet for unknown connection handle 71
[ 5416.090476] Bluetooth: hci0: SCO packet for unknown connection handle 66
[ 5416.090488] Bluetooth: hci0: SCO packet for unknown connection handle 66
[ 5416.090494] Bluetooth: hci0: SCO packet for unknown connection handle 66
[ 5505.644699] Bluetooth: hci0: SCO packet for unknown connection handle 64
[ 5505.644708] Bluetooth: hci0: SCO packet for unknown connection handle 64
[ 5505.644712] Bluetooth: hci0: SCO packet for unknown connection handle 64
[ 5505.644716] Bluetooth: hci0: SCO packet for unknown connection handle 64
[ 5605.318723] Bluetooth: hci0: SCO packet for unknown connection handle 66
[ 5605.318730] Bluetooth: hci0: SCO packet for unknown connection handle 66
[ 5605.318733] Bluetooth: hci0: SCO packet for unknown connection handle 66
[ 5624.210349] Bluetooth: hci0: SCO packet for unknown connection handle 65
[ 5624.210354] Bluetooth: hci0: SCO packet for unknown connection handle 65
[ 5645.393952] Bluetooth: hci0: SCO packet for unknown connection handle 66
[ 5645.393960] Bluetooth: hci0: SCO packet for unknown connection handle 66
[ 5645.393965] Bluetooth: hci0: SCO packet for unknown connection handle 66
[ 5645.393970] Bluetooth: hci0: SCO packet for unknown connection handle 66
[ 5645.393975] Bluetooth: hci0: SCO packet for unknown connection handle 66
[ 5815.438757] Bluetooth: hci0: SCO packet for unknown connection handle 66
[ 5815.438765] Bluetooth: hci0: SCO packet for unknown connection handle 66
[ 5838.330441] Bluetooth: hci0: SCO packet for unknown connection handle 66
[ 5838.330449] Bluetooth: hci0: SCO packet for unknown connection handle 66
[ 6513.274890] Bluetooth: hci0: SCO packet for unknown connection handle 66
[ 6513.274897] Bluetooth: hci0: SCO packet for unknown connection handle 66
[ 6540.826214] Bluetooth: hci0: SCO packet for unknown connection handle 65
[ 6540.826221] Bluetooth: hci0: SCO packet for unknown connection handle 65
[ 6540.826223] Bluetooth: hci0: SCO packet for unknown connection handle 65
[ 6540.826227] Bluetooth: hci0: SCO packet for unknown connection handle 65
[23887.726134] Bluetooth: hci0: SCO packet for unknown connection handle 71
[23887.726143] Bluetooth: hci0: SCO packet for unknown connection handle 71
[23887.726148] Bluetooth: hci0: SCO packet for unknown connection handle 71
[24039.295028] Bluetooth: hci0: SCO packet for unknown connection handle 71
[24073.198247] Bluetooth: hci0: SCO packet for unknown connection handle 65
[24073.198254] Bluetooth: hci0: SCO packet for unknown connection handle 65
[24073.198257] Bluetooth: hci0: SCO packet for unknown connection handle 65
[28430.707306] Bluetooth: hci0: SCO packet for unknown connection handle 71
[28430.707313] Bluetooth: hci0: SCO packet for unknown connection handle 71
[28430.707316] Bluetooth: hci0: SCO packet for unknown connection handle 71
[28430.707320] Bluetooth: hci0: SCO packet for unknown connection handle 71
[28484.074194] Bluetooth: hci0: SCO packet for unknown connection handle 71
[28484.074200] Bluetooth: hci0: SCO packet for unknown connection handle 71
[28528.185348] Bluetooth: hci0: SCO packet for unknown connection handle 70
[28528.185355] Bluetooth: hci0: SCO packet for unknown connection handle 70
[28623.319371] Bluetooth: hci0: SCO packet for unknown connection handle 71
[28764.812462] Bluetooth: hci0: SCO packet for unknown connection handle 71
[28764.812469] Bluetooth: hci0: SCO packet for unknown connection handle 71
[28764.812473] Bluetooth: hci0: SCO packet for unknown connection handle 71
[ 0.128301] Spectre V2 : Enabling Restricted Speculation for firmware calls
[ 0.271380] ACPI: [Firmware Bug]: BIOS _OSI(Linux) query ignored
bluetooth 581632 83 btrtl,btintel,btbcm,bnep,ath3k,btusb,rfcomm
ecdh_generic 16384 2 bluetooth
gege@gege-Aspire-7740:~$