USB Device Diagnostics in Linux

To detect your USB device, in a terminal, you can try:

lsusb
lsusb -v

The second, verbose, offering more detail.

Another tool that provides extensive details for USB diagnostics:

sudo lsinput

You may have to install it first, it is part of input-utils

sudo apt install input-utils

A tool to show the device being recognized when inserted is

udevadm monitor --udev

The udevadm command cannot be run by itself. You must include a parameter to tell it what to do.

input-utils package

input-utils: utilities for the input layer of the Linux kernel: This is a collection of utilities which are useful when working with the input layer of the Linux kernel (version 2.6 and later). Included are utilities to list the input devices known to the kernel, show the input events that are received by a device, and query or modify keyboard maps. Specifically the tools deal with /dev/input/event* input devices.

• lsinput - dumps out all the input devices and the associated details
• input-kbd - dump out the keyboard mapping of a particular event device, must specify the device number such as 'sudo input-kbd 3'
• input-events - observe input events for watching a specific input device, must specify the device number such as 'sudo input-events 3'

udevadm

udevadm can be used to monitor USB connections

udevadm -h
Usage: udevadm [--help] [--version] [--debug] COMMAND [COMMAND OPTIONS]
  info         query sysfs or the udev database
  trigger      request events from the kernel
  settle       wait for the event queue to finish
  control      control the udev daemon
  monitor      listen to kernel and udev events
  hwdb         maintain the hardware database index
  test         test an event run
  test-builtin test a built-in command

To monitor USB connections here are some command usage examples:

udevadm monitor --subsystem-match=usb --property
udevadm monitor --subsystem-match=usb --property --udev