Okay, so traced this down to alsactl, which adds the PCM control from userspace. It is still a mystery to me why, I'm going to ask upstream.
** Package changed: alsa-driver (Ubuntu) => alsa-utils (Ubuntu) -- PCM mixer control does not affect output volume https://bugs.launchpad.net/bugs/625149 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
