Comment 4 for bug 1879124

Hey Chris, of course.

I plugged in the USB Dongle CSR 4.0, attempted to scan my BT device, unfortunately my usb device was not recognized. I also wanted to use Wireshark with this dongle, but it was not detected as well.

I am able to use this device on Ubuntu 18.04 and scan my BT devices.

here is a description of

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dmesg | grep -Ei 'blue|firm'

[ 0.134829] Spectre V2 : Enabling Restricted Speculation for firmware calls
[ 0.190638] ACPI: [Firmware Bug]: BIOS _OSI(Linux) query ignored
[ 3.176241] psmouse serio4: elantech: assuming hardware version 4 (with firmware version 0x361f02)
[ 14.828855] iwlwifi 0000:02:00.0: loaded firmware version 18.168.6.1 op_mode iwldvm
[ 14.832704] Bluetooth: Core ver 2.22
[ 14.832723] Bluetooth: HCI device and connection manager initialized
[ 14.832727] Bluetooth: HCI socket layer initialized
[ 14.832729] Bluetooth: L2CAP socket layer initialized
[ 14.832732] Bluetooth: SCO socket layer initialized
[ 18.841575] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 18.841577] Bluetooth: BNEP filters: protocol multicast
[ 18.841582] Bluetooth: BNEP socket layer initialized
[ 21.640029] Bluetooth: RFCOMM TTY layer initialized
[ 21.640039] Bluetooth: RFCOMM socket layer initialized
[ 21.640045] Bluetooth: RFCOMM ver 1.11
[ 47.954359] Bluetooth: hci0: command 0x0c14 tx timeout
[ 231.120897] Bluetooth: hci0: command 0x0c14 tx timeout
[ 6942.437038] Bluetooth: hci0: command 0x0c14 tx timeout

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$ sudo rfkill list

0: hci0: Bluetooth
 Soft blocked: no
 Hard blocked: no
1: hci1: Bluetooth
 Soft blocked: no
 Hard blocked: no
2: phy0: Wireless LAN
 Soft blocked: no
 Hard blocked: no