On Wednesday, October 22, 2014 12:10:46 Raymond Yau wrote:
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:
https://askubuntu.com/questions/537166/usb%2daudio%2ddevice%2dnot%2dfully%2d 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
https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/commit/sound/us...
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!
j