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Re: Sound input source detected but not capturing



On Sb, 04 sep 21, 12:58:14, Marko Randjelovic wrote:
> On Sat, 04 Sep 2021 07:47:02 +0530
> Pankaj Jangid <pankaj@codeisgreat.org> wrote:
> > 
> > Output of ‘amixer -c0’
> > 
> > --8<---------------cut here---------------start------------->8---
> > $ cat /proc/asound/cards
> >  0 [PCH            ]: HDA-Intel - HDA Intel PCH
> >                       HDA Intel PCH at 0xb1328000 irq 137
> > 
> > $ amixer -c0
> > Simple mixer control 'Master',0
> >   Capabilities: pvolume pvolume-joined pswitch pswitch-joined
> >   Playback channels: Mono
> >   Limits: Playback 0 - 87
> >   Mono: Playback 87 [100%] [0.00dB] [on]
> > Simple mixer control 'Headphone',0
> >   Capabilities: pvolume pswitch
> >   Playback channels: Front Left - Front Right
> >   Limits: Playback 0 - 87
> >   Mono:
> >   Front Left: Playback 0 [0%] [-65.25dB] [off]
> >   Front Right: Playback 0 [0%] [-65.25dB] [off]
> > Simple mixer control 'Speaker',0
> >   Capabilities: pvolume pswitch
> >   Playback channels: Front Left - Front Right
> >   Limits: Playback 0 - 87
> >   Mono:
> >   Front Left: Playback 87 [100%] [0.00dB] [on]
> >   Front Right: Playback 87 [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 254 [100%] [-0.20dB]
> >   Front Right: Playback 254 [100%] [-0.20dB]
> > Simple mixer control 'Mic Boost',0
> >   Capabilities: volume
> >   Playback channels: Front Left - Front Right
> >   Capture channels: Front Left - Front Right
> >   Limits: 0 - 3
> >   Front Left: 3 [100%] [30.00dB]
> >   Front Right: 3 [100%] [30.00dB]
> > Simple mixer control 'IEC958',0
> >   Capabilities: pswitch pswitch-joined
> >   Playback channels: Mono
> >   Mono: Playback [off]
> > Simple mixer control 'IEC958',1
> >   Capabilities: pswitch pswitch-joined
> >   Playback channels: Mono
> >   Mono: Playback [on]
> > Simple mixer control 'IEC958',2
> >   Capabilities: pswitch pswitch-joined
> >   Playback channels: Mono
> >   Mono: Playback [on]
> > Simple mixer control 'IEC958',3
> >   Capabilities: pswitch pswitch-joined
> >   Playback channels: Mono
> >   Mono: Playback [on]
> > Simple mixer control 'IEC958',4
> >   Capabilities: pswitch pswitch-joined
> >   Playback channels: Mono
> >   Mono: Playback [on]
> > Simple mixer control 'Capture',0
> >   Capabilities: cvolume cswitch
> >   Capture channels: Front Left - Front Right
> >   Limits: Capture 0 - 63
> >   Front Left: Capture 63 [100%] [30.00dB] [on]
> >   Front Right: Capture 63 [100%] [30.00dB] [on]
> > Simple mixer control 'Auto-Mute Mode',0
> >   Capabilities: enum
> >   Items: 'Disabled' 'Enabled'
> >   Item0: 'Enabled'
> > Simple mixer control 'Internal 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]
> > --8<---------------cut here---------------end--------------->8---
> > 
> 
> Your control 'Capture',0 is turned on and volume is at maximum, so
> that's fine, but you don't have 'input source' control. On my machine
> output of 'amixer -c0' gives among other controls the following:
> 
> Simple mixer control 'Input Source',0
>   Capabilities: cenum
>   Items: 'Rear Mic' 'Front Mic' 'Line' 'CD'
>   Item0: 'Rear Mic'
> 
> I suppose this is the reason why your capture is not working, but don't
> know how to fix it.

Well, there's no "Internal Mic" and "Mic" to choose from, so maybe 
that's the problem.

@Pankaj, do you have a microphone connected to the audio (combo) jack 
and/or maybe the internal microphone is disabled in EFI and/or from 
hotkeys?

> You might try to install kernel 5.13 from
> experimental or newest vanilla stable which is currently 5.14.1 (take
> care not to make your system unbootable). Also you might try with newer
> alsa userland software.

Or this...

Kind regards,
Andrei
-- 
http://wiki.debian.org/FAQsFromDebianUser

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