FIFINE microphone USB can not install in Ubuntu 20.04.3 LTS

I can't install and/or configure FIFINE microphone (usb microphone) in the following operating system:

NAME="Ubuntu"
VERSION="20.04.3 LTS (Focal Fossa)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 20.04.3 LTS"
VERSION_ID="20.04"
HOME_URL=""
SUPPORT_URL=""
BUG_REPORT_URL=""
PRIVACY_POLICY_URL=""
VERSION_CODENAME=focal
UBUNTU_CODENAME=focal

I run lsusb and get the following result:

$ lsusb
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 058f:d102 Alcor Micro Corp. HD WebCam
Bus 001 Device 002: ID 8087:0025 Intel Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

Thanks in advance!

1 Answer

Many device access problems can be resolved through group membership changes.

You can find the device name by watching sudo journalctl --follow as you connect your device. OR ls -1 /dev >dev.before, connect the device, wait 10 seconds, ls -1 /dev >dev.after;diff dev.{before,after}.

Specifically, if ls -l shows that the group permissions (the second "rwx" triplet) is "rw" (e.g."-rw-rw----"), then, adding oneself to the group that owns the device will grant rw access.

Here's how:

# change to your device name
device="/dev/dvdrw"
sudo adduser $USER $(stat -c "%G" $device)

This allows you membership in the group that can rw the device, but there is one more step.

To make all your processes members of the new group, logout and login. Group memberships are set up at login time.

To create a single process in the new group (for testing, prior to logout/login):

newgrp $(stat -c "%G" $device) 

or, just type the group name. See man newgrp.