root@master:/home/alex# lsof /dev/snd/* /dev/dsp*
COMMAND     PID USER   FD   TYPE DEVICE SIZE  NODE NAME
mixer_app  5638 alex   20u   CHR  116,0      14320 /dev/snd/controlC0
firefox-b 11441 alex  mem    CHR 116,16      14291 /dev/snd/pcmC0D0p
firefox-b 11441 alex   62r   CHR 116,33      13979 /dev/snd/timer
firefox-b 11441 alex   63u   CHR 116,16      14291 /dev/snd/pcmC0D0p
firefox-b 11441 alex   64u   CHR  116,0      14320 /dev/snd/controlC0
gnome-sou 11562 alex  mem    CHR 116,24      14298 /dev/snd/pcmC0D0c
gnome-sou 11562 alex  mem    CHR 116,16      14291 /dev/snd/pcmC0D0p
gnome-sou 11562 alex   17r   CHR 116,33      13979 /dev/snd/timer
gnome-sou 11562 alex   18u   CHR 116,16      14291 /dev/snd/pcmC0D0p
gnome-sou 11562 alex   19u   CHR  116,0      14320 /dev/snd/controlC0
gnome-sou 11562 alex   20r   CHR 116,33      13979 /dev/snd/timer
gnome-sou 11562 alex   21u   CHR 116,24      14298 /dev/snd/pcmC0D0c
gnome-sou 11562 alex   22u   CHR  116,0      14320 /dev/snd/controlC0
gnome-sou 11562 alex   25u   CHR  116,0      14320 /dev/snd/controlC0
root@master:/home/alex# modprobe snd-hda-intel model=3stack-660
root@master:/home/alex#