On Fri, Nov 24, 2017 at 4:38 PM, Clemens Ladisch via Alsa-user <alsa-user@lists.sourceforge.net > wrote:
Kent Tong wrote:
> Simple mixer control 'Capture',0
> Front Left: Capture 63 [100%] [30.00dB] [on]
> Front Right: Capture 63 [100%] [30.00dB] [on]
> Simple mixer control 'Input Source',0
> Items: 'Front Mic' 'Rear Mic' 'Line'
> Item0: 'Front Mic'
> Simple mixer control 'Front Mic Boost',0
> Front Left: 2 [67%] [20.00dB]
> Front Right: 2 [67%] [20.00dB]
This looks OK. Did you try to record from the front mic?
Yes.
> Simple mixer control 'Capture',1
> Front Left: Capture 0 [0%] [-17.25dB] [off]
> Front Right: Capture 0 [0%] [-17.25dB] [off]
> Simple mixer control 'Input Source',1
> Items: 'Front Mic' 'Rear Mic' 'Line'
> Item0: 'Rear Mic'
> Simple mixer control 'Rear Mic Boost',0
> Front Left: 0 [0%] [0.00dB]
> Front Right: 0 [0%] [0.00dB]
You have a second capture device (see "arecord -l"), which is currently
configured to record silence.
Below is the output of "arecord -l". I have no idea what that Alt device is.
**** List of CAPTURE Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 0: Generic Analog [Generic Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 2: Generic Alt Analog [Generic Alt Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
Which device did you try to use? Can you try both?
I only use the front mic.
> Simple mixer control 'Line Boost',0
> Front Left: 0 [0%] [0.00dB]
> Front Right: 0 [0%] [0.00dB]
Does the line input work?
how to test that?
Thanks a lot for your help!
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