linux sound

aplay

sudo alsa force-reload 

vi /etc/modprobe.d/alsa-base.conf

Show Sound Devices

boby@fwhlin:~$ cat /proc/asound/cards
 0 [Intel          ]: HDA-Intel - HDA Intel
                      HDA Intel at 0xfb9f8000 irq 75
 1 [HDMI           ]: HDA-Intel - HDA ATI HDMI
                      HDA ATI HDMI at 0xfbcfc000 irq 76
boby@fwhlin:~$

boby@boby-pc ~ $ cat /proc/asound/card0/codec* | grep Codec
Codec: Realtek ALC892
boby@boby-pc ~ $ 

boby@boby-pc ~ $ cat /proc/asound/card0/pcm0c/info
card: 0
device: 0
subdevice: 0
stream: CAPTURE
id: ALC892 Analog
name: ALC892 Analog
subname: subdevice #0
class: 0
subclass: 0
subdevices_count: 1
subdevices_avail: 1
boby@boby-pc ~ $