Here is mine amixer output:
$ amixer Simple mixer control 'Master',0 Capabilities: pvolume pswitch pswitch-joined Playback channels: Front Left - Front Right Limits: Playback 135 - 255 Mono: Front Left: Playback 255 [100%] [0.00dB] [on] Front Right: Playback 255 [100%] [0.00dB] [on] Simple mixer control 'Headphones Impedance',0 Capabilities: penum Items: '< 32 ohms' '32-64 ohms' '64-300 ohms' '300-600 ohms' Item0: '< 32 ohms' Simple mixer control 'Line',0 Capabilities: cswitch cswitch-joined Capture channels: Mono Mono: Capture [off] Simple mixer control 'Mic',0 Capabilities: cvolume cvolume-joined cswitch cswitch-joined Capture channels: Mono Limits: Capture 0 - 31 Mono: Capture 31 [100%] [12.00dB] [on] Simple mixer control 'Mic Boost (+20dB)',0 Capabilities: pswitch pswitch-joined Playback channels: Mono Mono: Playback [off] Simple mixer control 'Mic Source',0 Capabilities: cenum Items: 'Mic Jack' 'Front Panel' Item0: 'Mic Jack' Simple mixer control 'IEC958',0 Capabilities: pswitch pswitch-joined Playback channels: Mono Mono: Playback [off] Simple mixer control 'IEC958 Loopback',0 Capabilities: pswitch pswitch-joined Playback channels: Mono Mono: Playback [off] Simple mixer control 'IEC958 Validity Check',0 Capabilities: cswitch cswitch-joined Capture channels: Mono Mono: Capture [off] Simple mixer control 'Aux',0 Capabilities: cvolume cswitch cswitch-joined Capture channels: Front Left - Front Right Limits: Capture 0 - 31 Front Left: Capture 0 [0%] [-34.50dB] [off] Front Right: Capture 0 [0%] [-34.50dB] [off] Simple mixer control 'Analog Input Monitor',0 Capabilities: pvolume pvolume-joined pswitch pswitch-joined Playback channels: Mono Limits: Playback 0 - 1 Mono: Playback 1 [100%] [0.00dB] [off] Simple mixer control 'Analog Output',0 Capabilities: enum Items: 'Speakers' 'Headphones' 'FP Headphones' Item0: 'Speakers' Simple mixer control 'DAC Filter',0 Capabilities: penum Items: 'Sharp Roll-off' 'Slow Roll-off' Item0: 'Sharp Roll-off' Simple mixer control 'Digital Input Monitor',0 Capabilities: pvolume pvolume-joined pswitch pswitch-joined Playback channels: Mono Limits: Playback 0 - 1 Mono: Playback 1 [100%] [0.00dB] [off]
Here is mine amixer output:
$ amixer
Simple mixer control 'Master',0
Capabilities: pvolume pswitch pswitch-joined
Playback channels: Front Left - Front Right
Limits: Playback 135 - 255
Mono:
Front Left: Playback 255 [100%] [0.00dB] [on]
Front Right: Playback 255 [100%] [0.00dB] [on]
Simple mixer control 'Headphones Impedance',0
Capabilities: penum
Items: '< 32 ohms' '32-64 ohms' '64-300 ohms' '300-600 ohms'
Item0: '< 32 ohms'
Simple mixer control 'Line',0
Capabilities: cswitch cswitch-joined
Capture channels: Mono
Mono: Capture [off]
Simple mixer control 'Mic',0
Capabilities: cvolume cvolume-joined cswitch cswitch-joined
Capture channels: Mono
Limits: Capture 0 - 31
Mono: Capture 31 [100%] [12.00dB] [on]
Simple mixer control 'Mic Boost (+20dB)',0
Capabilities: pswitch pswitch-joined
Playback channels: Mono
Mono: Playback [off]
Simple mixer control 'Mic Source',0
Capabilities: cenum
Items: 'Mic Jack' 'Front Panel'
Item0: 'Mic Jack'
Simple mixer control 'IEC958',0
Capabilities: pswitch pswitch-joined
Playback channels: Mono
Mono: Playback [off]
Simple mixer control 'IEC958 Loopback',0
Capabilities: pswitch pswitch-joined
Playback channels: Mono
Mono: Playback [off]
Simple mixer control 'IEC958 Validity Check',0
Capabilities: cswitch cswitch-joined
Capture channels: Mono
Mono: Capture [off]
Simple mixer control 'Aux',0
Capabilities: cvolume cswitch cswitch-joined
Capture channels: Front Left - Front Right
Limits: Capture 0 - 31
Front Left: Capture 0 [0%] [-34.50dB] [off]
Front Right: Capture 0 [0%] [-34.50dB] [off]
Simple mixer control 'Analog Input Monitor',0
Capabilities: pvolume pvolume-joined pswitch pswitch-joined
Playback channels: Mono
Limits: Playback 0 - 1
Mono: Playback 1 [100%] [0.00dB] [off]
Simple mixer control 'Analog Output',0
Capabilities: enum
Items: 'Speakers' 'Headphones' 'FP Headphones'
Item0: 'Speakers'
Simple mixer control 'DAC Filter',0
Capabilities: penum
Items: 'Sharp Roll-off' 'Slow Roll-off'
Item0: 'Sharp Roll-off'
Simple mixer control 'Digital Input Monitor',0
Capabilities: pvolume pvolume-joined pswitch pswitch-joined
Playback channels: Mono
Limits: Playback 0 - 1
Mono: Playback 1 [100%] [0.00dB] [off]