Disabling Loopback for Logitech G432 on Ubuntu

My old Logitech headset died a number of deaths (headband broken, cushion torn, finally cable broken), so I got myself a G432.

Unfortunately, using it in Teams under Ubuntu, I experienced an irritating loopback. Quickly took to the internets, but AskUbuntu was only of limited help.

For example, one answer suggested to use alsamixer, but that only completely muted the headset, not only the microphone loopback.

Another answer pointed me to a tool called HeadsetControl which allows exactly the control I wanted, and its Readme file even lists the model I have. Hurray.

I followed the instructions to install:

sudo apt-get install build-essential git cmake libhidapi-dev
git clone https://github.com/Sapd/HeadsetControl && cd HeadsetControl
mkdir build && cd build
cmake ..
make
sudo make install

After installation, I ran

$ headsetcontrol -?
Found Logitech G432/G433!
Supported capabilities:

* sidetone

And tried to set “sidetone” to zero:

headsetcontrol -s 0
Found Logitech G432/G433!
Failed to open requested device.
HID Error: (null)

Apparently, headsetcontrol requires sudo:

sudo headsetcontrol -s 0
Found Logitech G432/G433!
Success!

No more loopback!