> > > Howdy! I have a situation where PulseAudio is "grabbing" a usb headset > > > > before > > > > > fully initialized, thus not all features are being recognized. > > > > > More details here: > ><a href="https://askubuntu.com/questions/537166/usb%2daudio%2ddevice%2dnot%2dfully%2d">https://askubuntu.com/questions/537166/usb%2daudio%2ddevice%2dnot%2dfully%2d</a> > > working%2dafter%2dhotplug > > > > You have to post output of alsa-info.sh and pactl list before and after the > > hot plug > > This does not have my web cam attached. > > Files attached. I also did a pulse restart, and captured the pactl list output > after that too. > > > This look like priority issue if you have usb web cam mic and hotplug usb > > headset > > > > ><a href="https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/commit/sound/usb/mixer.c?id=9fcd0ab130579d9742538340edda3225f2b49a3e">https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/commit/sound/usb/mixer.c?id=9fcd0ab130579d9742538340edda3225f2b49a3e</a> > > This happens even without the USB web cam plugged in. > > > Another issue is some usb devices only obtained dB scale at a later time > > after the control is created > > > > This may need some delay for pulseaudio to get dB scale > > > > You can add printk statement to find out how much time you need > > I've done zero kernel hacking, so can't really help there, sorry! > Unfotunately, you need to fix many things in kernel Is this a notebook with internal 5.1 speakers with three jacks at rear panel (headphone , mic and line in) ? 1) large volume range of mic capture Volume and speaker playback volume <a href="https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/commit/sound/usb/mixer.c?id=9b4ef97757953c6071563b7cbfc689e3dd771603">https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/commit/sound/usb/mixer.c?id=9b4ef97757953c6071563b7cbfc689e3dd771603</a> 2) your 5.1 internal speaker have same priority