Hi,

After an upgrade to Bookworm, controlling the volume of my USB headphone
with its integrated buttons doesn't work anymore. It feels like it's
controlling the "main" volume of my laptop (ie: my laptop's speakers)
instead of the volume of my headphones.

This is kind of frustrating, it used to work absolutely perfectly in
Bullseye. Every even version of Debian, this is broken. Why?!? Is there
a way to configure this? If so, how come the default config changed?
I'm guessing I wont be the only annoyed user...

Cheers,

Thomas Goirand (zigo)