aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: ICH6 [Intel ICH6], device 0: Intel ICH [Intel ICH6]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: ICH6 [Intel ICH6], device 4: Intel ICH - IEC958 [Intel ICH6 - IEC958]
Subdevices: 1/1
Subdevice #0: subdevice #0
aplay -L
null
Discard all samples (playback) or generate zero samples (capture)
default:CARD=ICH6
Intel ICH6, Intel ICH6
Default Audio Device
sysdefault:CARD=ICH6
Intel ICH6, Intel ICH6
Default Audio Device
front:CARD=ICH6,DEV=0
Intel ICH6, Intel ICH6
Front speakers
surround21:CARD=ICH6,DEV=0
Intel ICH6, Intel ICH6
2.1 Surround output to Front and Subwoofer speakers
surround40:CARD=ICH6,DEV=0
Intel ICH6, Intel ICH6
4.0 Surround output to Front and Rear speakers
surround41:CARD=ICH6,DEV=0
Intel ICH6, Intel ICH6
4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=ICH6,DEV=0
Intel ICH6, Intel ICH6
5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=ICH6,DEV=0
Intel ICH6, Intel ICH6
5.1 Surround output to Front, Center, Rear and Subwoofer speakers
iec958:CARD=ICH6,DEV=0
Intel ICH6, Intel ICH6 - IEC958
IEC958 (S/PDIF) Digital Audio Output
dmix:CARD=ICH6,DEV=0
Intel ICH6, Intel ICH6
Direct sample mixing device
dmix:CARD=ICH6,DEV=4
Intel ICH6, Intel ICH6 - IEC958
Direct sample mixing device
dsnoop:CARD=ICH6,DEV=0
Intel ICH6, Intel ICH6
Direct sample snooping device
dsnoop:CARD=ICH6,DEV=4
Intel ICH6, Intel ICH6 - IEC958
Direct sample snooping device
hw:CARD=ICH6,DEV=0
Intel ICH6, Intel ICH6
Direct hardware device without any conversions
hw:CARD=ICH6,DEV=4
Intel ICH6, Intel ICH6 - IEC958
Direct hardware device without any conversions
plughw:CARD=ICH6,DEV=0
Intel ICH6, Intel ICH6
Hardware device with all software conversions
plughw:CARD=ICH6,DEV=4
Intel ICH6, Intel ICH6 - IEC958
Hardware device with all software conversions