john@host:~$ cat /proc/asound/cards
0 [Intel ]: HDA-Intel - HDA Intel
HDA Intel at 0xfeaf8000 irq 43
john@host:~$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: Intel [HDA Intel], device 0: ALC887 Analog [ALC887 Analog]
Subdevices: 0/1
Subdevice #0: subdevice #0
card 0: Intel [HDA Intel], device 1: ALC887 Digital [ALC887 Digital]
Subdevices: 1/1
Subdevice #0: subdevice #0
john@host:~$ cat /etc/apt/sources.list
deb
http://ftp.br.debian.org/debian wheezy main
deb-src
http://ftp.br.debian.org/debian wheezy main contrib
deb
http://security.debian.org/ wheezy/updates main contrib
deb-src
http://security.debian.org/ wheezy/updates main contrib
deb
http://www.deb-multimedia.org wheezy main non-free
deb
ftp://ftp.deb-multimedia.org wheezy main non-free
deb
http://http.debian.net/debian wheezy-backports main
I am not a system meddling guy. All I remember is I turned audacity on, mic didn't work (though the day before it did) I checked System Settings--> Sound --> Input, no device in the list.