Code:
BASH:~/-> amixer -c0 controls
numid=39,iface=CARD,name='Front Headphone Jack'
numid=41,iface=CARD,name='Front Mic Jack'
numid=42,iface=CARD,name='Line Jack'
numid=37,iface=CARD,name='Line Out CLFE Jack'
numid=35,iface=CARD,name='Line Out Front Jack'
numid=38,iface=CARD,name='Line Out Side Jack'
numid=36,iface=CARD,name='Line Out Surround Jack'
numid=40,iface=CARD,name='Rear Mic Jack'
numid=34,iface=MIXER,name='Master Playback Switch'
numid=33,iface=MIXER,name='Master Playback Volume'
numid=12,iface=MIXER,name='Headphone Playback Switch'
numid=11,iface=MIXER,name='Headphone Playback Volume'
numid=43,iface=MIXER,name='PCM Playback Volume'
numid=21,iface=MIXER,name='Front Mic Boost Volume'
numid=16,iface=MIXER,name='Front Mic Playback Switch'
numid=15,iface=MIXER,name='Front Mic Playback Volume'
numid=2,iface=MIXER,name='Front Playback Switch'
numid=1,iface=MIXER,name='Front Playback Volume'
numid=4,iface=MIXER,name='Surround Playback Switch'
numid=3,iface=MIXER,name='Surround Playback Volume'
numid=7,iface=MIXER,name='Center Playback Switch'
numid=5,iface=MIXER,name='Center Playback Volume'
numid=8,iface=MIXER,name='LFE Playback Switch'
numid=6,iface=MIXER,name='LFE Playback Volume'
numid=18,iface=MIXER,name='Line Playback Switch'
numid=17,iface=MIXER,name='Line Playback Volume'
numid=22,iface=MIXER,name='Capture Switch'
numid=23,iface=MIXER,name='Capture Switch',index=1
numid=24,iface=MIXER,name='Capture Volume'
numid=25,iface=MIXER,name='Capture Volume',index=1
numid=32,iface=MIXER,name='IEC958 Default PCM Playback Switch'
numid=28,iface=MIXER,name='IEC958 Playback Con Mask'
numid=29,iface=MIXER,name='IEC958 Playback Pro Mask'
numid=30,iface=MIXER,name='IEC958 Playback Default'
numid=31,iface=MIXER,name='IEC958 Playback Switch'
numid=19,iface=MIXER,name='Auto-Mute Mode'
numid=26,iface=MIXER,name='Input Source'
numid=27,iface=MIXER,name='Input Source',index=1
numid=20,iface=MIXER,name='Rear Mic Boost Volume'
numid=14,iface=MIXER,name='Rear Mic Playback Switch'
numid=13,iface=MIXER,name='Rear Mic Playback Volume'
numid=10,iface=MIXER,name='Side Playback Switch'
numid=9,iface=MIXER,name='Side Playback Volume'
I'm not really sure, but I think the "IEC958" items relate to my S/PDIF port. Maybe someone more in the know can shed some light on that.