0

The mic is visible in "PulseAudio volume control". It is not muted and volume is at 100%. I can see it picks sounds. It is also visible in arecord:

$ arecord -l | tail -n 3
card 3: Microphone [Trust GXT 232 Microphone], device 0: USB Audio [USB Audio]
  Subdevices: 0/1
  Subdevice #0: subdevice #0

$ arecord -L | tail -n 39
sysdefault:CARD=Microphone
    Trust GXT 232 Microphone, USB Audio
    Default Audio Device
front:CARD=Microphone,DEV=0
    Trust GXT 232 Microphone, USB Audio
    Front speakers
surround21:CARD=Microphone,DEV=0
    Trust GXT 232 Microphone, USB Audio
    2.1 Surround output to Front and Subwoofer speakers
surround40:CARD=Microphone,DEV=0
    Trust GXT 232 Microphone, USB Audio
    4.0 Surround output to Front and Rear speakers
surround41:CARD=Microphone,DEV=0
    Trust GXT 232 Microphone, USB Audio
    4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=Microphone,DEV=0
    Trust GXT 232 Microphone, USB Audio
    5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=Microphone,DEV=0
    Trust GXT 232 Microphone, USB Audio
    5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=Microphone,DEV=0
    Trust GXT 232 Microphone, USB Audio
    7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
iec958:CARD=Microphone,DEV=0
    Trust GXT 232 Microphone, USB Audio
    IEC958 (S/PDIF) Digital Audio Output
dmix:CARD=Microphone,DEV=0
    Trust GXT 232 Microphone, USB Audio
    Direct sample mixing device
dsnoop:CARD=Microphone,DEV=0
    Trust GXT 232 Microphone, USB Audio
    Direct sample snooping device
hw:CARD=Microphone,DEV=0
    Trust GXT 232 Microphone, USB Audio
    Direct hardware device without any conversions
plughw:CARD=Microphone,DEV=0
    Trust GXT 232 Microphone, USB Audio
    Hardware device with all software conversions

The mic is not available for selection in Audacity (I tried all options, launched Audacity after mic was connected). It works oob in Windows 10 in Audacity.

I am using Audacity 2.1.2, PulseAudio 8 (Kubuntu 16.04).

AlsaMixer: AlsaMixer

amixer:

Simple mixer control 'Master',0
  Capabilities: pvolume pvolume-joined pswitch pswitch-joined
  Playback channels: Mono
  Limits: Playback 0 - 64
  Mono: Playback 58 [91%] [-6.00dB] [on]
Simple mixer control 'Headphone',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 64
  Mono:
  Front Left: Playback 64 [100%] [0.00dB] [on]
  Front Right: Playback 64 [100%] [0.00dB] [on]
Simple mixer control 'PCM',0
  Capabilities: pvolume
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 255
  Mono:
  Front Left: Playback 255 [100%] [0.00dB]
  Front Right: Playback 255 [100%] [0.00dB]
Simple mixer control 'Front',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 64
  Mono:
  Front Left: Playback 64 [100%] [0.00dB] [on]
  Front Right: Playback 64 [100%] [0.00dB] [on]
Simple mixer control 'Front Mic',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 0 [0%] [-34.50dB] [on]
  Front Right: Playback 0 [0%] [-34.50dB] [on]
Simple mixer control 'Front Mic Boost',0
  Capabilities: volume
  Playback channels: Front Left - Front Right
  Capture channels: Front Left - Front Right
  Limits: 0 - 3
  Front Left: 2 [67%] [20.00dB]
  Front Right: 2 [67%] [20.00dB]
Simple mixer control 'Surround',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 64
  Mono:
  Front Left: Playback 0 [0%] [-64.00dB] [off]
  Front Right: Playback 0 [0%] [-64.00dB] [off]
Simple mixer control 'Center',0
  Capabilities: pvolume pvolume-joined pswitch pswitch-joined
  Playback channels: Mono
  Limits: Playback 0 - 64
  Mono: Playback 0 [0%] [-64.00dB] [off]
Simple mixer control 'LFE',0
  Capabilities: pvolume pvolume-joined pswitch pswitch-joined
  Playback channels: Mono
  Limits: Playback 0 - 64
  Mono: Playback 0 [0%] [-64.00dB] [off]
Simple mixer control 'Line',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 0 [0%] [-34.50dB] [on]
  Front Right: Playback 0 [0%] [-34.50dB] [on]
Simple mixer control 'Line Boost',0
  Capabilities: volume
  Playback channels: Front Left - Front Right
  Capture channels: Front Left - Front Right
  Limits: 0 - 3
  Front Left: 0 [0%] [0.00dB]
  Front Right: 0 [0%] [0.00dB]
Simple mixer control 'Capture',0
  Capabilities: cvolume cswitch
  Capture channels: Front Left - Front Right
  Limits: Capture 0 - 46
  Front Left: Capture 46 [100%] [30.00dB] [on]
  Front Right: Capture 46 [100%] [30.00dB] [on]
Simple mixer control 'Capture',1
  Capabilities: cvolume cswitch
  Capture channels: Front Left - Front Right
  Limits: Capture 0 - 46
  Front Left: Capture 0 [0%] [-16.00dB] [off]
  Front Right: Capture 0 [0%] [-16.00dB] [off]
Simple mixer control 'Auto-Mute Mode',0
  Capabilities: enum
  Items: 'Disabled' 'Enabled'
  Item0: 'Disabled'
Simple mixer control 'Channel Mode',0
  Capabilities: enum
  Items: '2ch' '4ch' '6ch'
  Item0: '2ch'
Simple mixer control 'Digital',0
  Capabilities: cvolume
  Capture channels: Front Left - Front Right
  Limits: Capture 0 - 120
  Front Left: Capture 60 [50%] [0.00dB]
  Front Right: Capture 60 [50%] [0.00dB]
Simple mixer control 'Input Source',0
  Capabilities: cenum
  Items: 'Front Mic' 'Rear Mic' 'Line'
  Item0: 'Line'
Simple mixer control 'Input Source',1
  Capabilities: cenum
  Items: 'Front Mic' 'Rear Mic' 'Line'
  Item0: 'Line'
Simple mixer control 'Loopback Mixing',0
  Capabilities: enum
  Items: 'Disabled' 'Enabled'
  Item0: 'Enabled'
Simple mixer control 'Rear Mic',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 0 [0%] [-34.50dB] [on]
  Front Right: Playback 0 [0%] [-34.50dB] [on]
Simple mixer control 'Rear Mic Boost',0
  Capabilities: volume
  Playback channels: Front Left - Front Right
  Capture channels: Front Left - Front Right
  Limits: 0 - 3
  Front Left: 0 [0%] [0.00dB]
  Front Right: 0 [0%] [0.00dB]

Not sure if the USB mic is there. I tried few other parameters where it seems to show up at the end.

$ amixer controls:

numid=35,iface=CARD,name='Front Headphone Jack'
numid=31,iface=CARD,name='Front Mic Jack'
numid=33,iface=CARD,name='Line Jack'
numid=34,iface=CARD,name='Line Out Jack'
numid=32,iface=CARD,name='Rear Mic Jack'
numid=30,iface=MIXER,name='Master Playback Switch'
numid=29,iface=MIXER,name='Master Playback Volume'
numid=11,iface=MIXER,name='Headphone Playback Switch'
numid=10,iface=MIXER,name='Headphone Playback Volume'
numid=39,iface=MIXER,name='PCM Playback Volume'
numid=26,iface=MIXER,name='Front Mic Boost Volume'
numid=14,iface=MIXER,name='Front Mic Playback Switch'
numid=13,iface=MIXER,name='Front Mic Playback Volume'
numid=3,iface=MIXER,name='Front Playback Switch'
numid=2,iface=MIXER,name='Front Playback Volume'
numid=5,iface=MIXER,name='Surround Playback Switch'
numid=4,iface=MIXER,name='Surround Playback Volume'
numid=8,iface=MIXER,name='Center Playback Switch'
numid=6,iface=MIXER,name='Center Playback Volume'
numid=9,iface=MIXER,name='LFE Playback Switch'
numid=7,iface=MIXER,name='LFE Playback Volume'
numid=28,iface=MIXER,name='Line Boost Volume'
numid=18,iface=MIXER,name='Line Playback Switch'
numid=17,iface=MIXER,name='Line Playback Volume'
numid=23,iface=MIXER,name='Capture Switch'
numid=25,iface=MIXER,name='Capture Switch',index=1
numid=22,iface=MIXER,name='Capture Volume'
numid=24,iface=MIXER,name='Capture Volume',index=1
numid=12,iface=MIXER,name='Loopback Mixing'
numid=19,iface=MIXER,name='Auto-Mute Mode'
numid=1,iface=MIXER,name='Channel Mode'
numid=40,iface=MIXER,name='Digital Capture Volume'
numid=20,iface=MIXER,name='Input Source'
numid=21,iface=MIXER,name='Input Source',index=1
numid=27,iface=MIXER,name='Rear Mic Boost Volume'
numid=16,iface=MIXER,name='Rear Mic Playback Switch'
numid=15,iface=MIXER,name='Rear Mic Playback Volume'
numid=37,iface=PCM,name='Capture Channel Map'
numid=36,iface=PCM,name='Playback Channel Map'
numid=38,iface=PCM,name='Capture Channel Map',device=2

$ amixer contents:

numid=35,iface=CARD,name='Front Headphone Jack'
  ; type=BOOLEAN,access=r-------,values=1
  : values=on
numid=31,iface=CARD,name='Front Mic Jack'
  ; type=BOOLEAN,access=r-------,values=1
  : values=on
numid=33,iface=CARD,name='Line Jack'
  ; type=BOOLEAN,access=r-------,values=1
  : values=off
numid=34,iface=CARD,name='Line Out Jack'
  ; type=BOOLEAN,access=r-------,values=1
  : values=off
numid=32,iface=CARD,name='Rear Mic Jack'
  ; type=BOOLEAN,access=r-------,values=1
  : values=off
numid=30,iface=MIXER,name='Master Playback Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=on
numid=29,iface=MIXER,name='Master Playback Volume'
  ; type=INTEGER,access=rw---R--,values=1,min=0,max=64,step=0
  : values=58
  | dBscale-min=-64.00dB,step=1.00dB,mute=0
numid=11,iface=MIXER,name='Headphone Playback Switch'
  ; type=BOOLEAN,access=rw------,values=2
  : values=on,on
numid=10,iface=MIXER,name='Headphone Playback Volume'
  ; type=INTEGER,access=rw---R--,values=2,min=0,max=64,step=0
  : values=64,64
  | dBscale-min=-64.00dB,step=1.00dB,mute=0
numid=39,iface=MIXER,name='PCM Playback Volume'
  ; type=INTEGER,access=rw---RW-,values=2,min=0,max=255,step=0
  : values=255,255
  | dBscale-min=-51.00dB,step=0.20dB,mute=0
numid=26,iface=MIXER,name='Front Mic Boost Volume'
  ; type=INTEGER,access=rw---R--,values=2,min=0,max=3,step=0
  : values=2,2
  | dBscale-min=0.00dB,step=10.00dB,mute=0
numid=14,iface=MIXER,name='Front Mic Playback Switch'
  ; type=BOOLEAN,access=rw------,values=2
  : values=on,on
numid=13,iface=MIXER,name='Front Mic Playback Volume'
  ; type=INTEGER,access=rw---R--,values=2,min=0,max=31,step=0
  : values=0,0
  | dBscale-min=-34.50dB,step=1.50dB,mute=0
numid=3,iface=MIXER,name='Front Playback Switch'
  ; type=BOOLEAN,access=rw------,values=2
  : values=on,on
numid=2,iface=MIXER,name='Front Playback Volume'
  ; type=INTEGER,access=rw---R--,values=2,min=0,max=64,step=0
  : values=64,64
  | dBscale-min=-64.00dB,step=1.00dB,mute=0
numid=5,iface=MIXER,name='Surround Playback Switch'
  ; type=BOOLEAN,access=rw------,values=2
  : values=off,off
numid=4,iface=MIXER,name='Surround Playback Volume'
  ; type=INTEGER,access=rw---R--,values=2,min=0,max=64,step=0
  : values=0,0
  | dBscale-min=-64.00dB,step=1.00dB,mute=0
numid=8,iface=MIXER,name='Center Playback Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=6,iface=MIXER,name='Center Playback Volume'
  ; type=INTEGER,access=rw---R--,values=1,min=0,max=64,step=0
  : values=0
  | dBscale-min=-64.00dB,step=1.00dB,mute=0
numid=9,iface=MIXER,name='LFE Playback Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=7,iface=MIXER,name='LFE Playback Volume'
  ; type=INTEGER,access=rw---R--,values=1,min=0,max=64,step=0
  : values=0
  | dBscale-min=-64.00dB,step=1.00dB,mute=0
numid=28,iface=MIXER,name='Line Boost Volume'
  ; type=INTEGER,access=rw---R--,values=2,min=0,max=3,step=0
  : values=0,0
  | dBscale-min=0.00dB,step=10.00dB,mute=0
numid=18,iface=MIXER,name='Line Playback Switch'
  ; type=BOOLEAN,access=rw------,values=2
  : values=on,on
numid=17,iface=MIXER,name='Line Playback Volume'
  ; type=INTEGER,access=rw---R--,values=2,min=0,max=31,step=0
  : values=0,0
  | dBscale-min=-34.50dB,step=1.50dB,mute=0
numid=23,iface=MIXER,name='Capture Switch'
  ; type=BOOLEAN,access=rw------,values=2
  : values=on,on
numid=25,iface=MIXER,name='Capture Switch',index=1
  ; type=BOOLEAN,access=rw------,values=2
  : values=off,off
numid=22,iface=MIXER,name='Capture Volume'
  ; type=INTEGER,access=rw---R--,values=2,min=0,max=46,step=0
  : values=46,46
  | dBscale-min=-16.00dB,step=1.00dB,mute=0
numid=24,iface=MIXER,name='Capture Volume',index=1
  ; type=INTEGER,access=rw---R--,values=2,min=0,max=46,step=0
  : values=0,0
  | dBscale-min=-16.00dB,step=1.00dB,mute=0
numid=12,iface=MIXER,name='Loopback Mixing'
  ; type=ENUMERATED,access=rw------,values=1,items=2
  ; Item #0 'Disabled'
  ; Item #1 'Enabled'
  : values=1
numid=19,iface=MIXER,name='Auto-Mute Mode'
  ; type=ENUMERATED,access=rw------,values=1,items=2
  ; Item #0 'Disabled'
  ; Item #1 'Enabled'
  : values=0
numid=1,iface=MIXER,name='Channel Mode'
  ; type=ENUMERATED,access=rw------,values=1,items=3
  ; Item #0 '2ch'
  ; Item #1 '4ch'
  ; Item #2 '6ch'
  : values=0
numid=40,iface=MIXER,name='Digital Capture Volume'
  ; type=INTEGER,access=rw---RW-,values=2,min=0,max=120,step=0
  : values=60,60
  | dBscale-min=-30.00dB,step=0.50dB,mute=0
numid=20,iface=MIXER,name='Input Source'
  ; type=ENUMERATED,access=rw------,values=1,items=3
  ; Item #0 'Front Mic'
  ; Item #1 'Rear Mic'
  ; Item #2 'Line'
  : values=2
numid=21,iface=MIXER,name='Input Source',index=1
  ; type=ENUMERATED,access=rw------,values=1,items=3
  ; Item #0 'Front Mic'
  ; Item #1 'Rear Mic'
  ; Item #2 'Line'
  : values=2
numid=27,iface=MIXER,name='Rear Mic Boost Volume'
  ; type=INTEGER,access=rw---R--,values=2,min=0,max=3,step=0
  : values=0,0
  | dBscale-min=0.00dB,step=10.00dB,mute=0
numid=16,iface=MIXER,name='Rear Mic Playback Switch'
  ; type=BOOLEAN,access=rw------,values=2
  : values=on,on
numid=15,iface=MIXER,name='Rear Mic Playback Volume'
  ; type=INTEGER,access=rw---R--,values=2,min=0,max=31,step=0
  : values=0,0
  | dBscale-min=-34.50dB,step=1.50dB,mute=0
numid=37,iface=PCM,name='Capture Channel Map'
  ; type=INTEGER,access=r----R--,values=2,min=0,max=36,step=0
  : values=0,0
  | container
    | chmap-fixed=FL,FR

numid=36,iface=PCM,name='Playback Channel Map'
  ; type=INTEGER,access=r----R--,values=2,min=0,max=36,step=0
  : values=0,0
  | container
    | chmap-fixed=FL,FR

numid=38,iface=PCM,name='Capture Channel Map',device=2
  ; type=INTEGER,access=r----R--,values=2,min=0,max=36,step=0
  : values=0,0
  | container
    | chmap-fixed=FL,FR
  • Could you tell me what the Audio Host setting is set too. It's dropdown is located far left just above the time code bar. – Michael Prokopec Jan 19 '19 at 5:58
  • @MichaelProkopec "ALSA", I don't have any other option. A field to the right from this is a mic combo box and I tried every option, none was working (either no sound or sound from other [builtin] microphone). – menfon Jan 19 '19 at 6:14
  • Can you show the output of amixer? – Michael Prokopec Jan 19 '19 at 6:22
  • @MichaelProkopec I have added a screenshot from alsamixer to the post. Edit: Oh, amixer, not alsamixer, added that as well. – menfon Jan 19 '19 at 7:39
0

One of the following Input sources should be set to Front Mic:

Simple mixer control 'Input Source',0
  Capabilities: cenum
  Items: 'Front Mic' 'Rear Mic' 'Line'
  Item0: 'Line'
Simple mixer control 'Input Source',1
  Capabilities: cenum
  Items: 'Front Mic' 'Rear Mic' 'Line'
  Item0: 'Line'

Something like the following tailored to fit your needs: Here

e.g. amixer cset name='Input Source',index=0 'Front Mic'

That should do it for you.

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