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ludog

Member

Registered: 2019-03-19

Posts: 42

Microphone not working, ALSA

My microphone has stopped working--no update or obvious change preceded this (though I did system upgrade when trying to fix it). "arecord --duration=2 --format=dat test-mic.wav; aplay test-mic.wav" plays nothing, even though the sound is working elsewhere, and the microphone works fine on my dual-booted Windows.

I've already added the kernel module parameter specified in the wiki:

>> cat /etc/modprobe.d/snd-hda-intel.conf
options snd-hda-intel enable_msi=1

I also tried raising mic boost in alsamixer: so that "alsamixer --view=capture" shows the following
https://postimg.cc/NyS9MFG2
Then I hear just white noise, no actual sounds.

Also, the amixer command to unmute the microphone gives a correct-looking output.

>> amixer sset Capture cap
Simple mixer control 'Capture',0
  Capabilities: cvolume cswitch
  Capture channels: Front Left - Front Right
  Limits: Capture 0 - 63
  Front Left: Capture 59 [94%] [27.00dB] [on]
  Front Right: Capture 59 [94%] [27.00dB] [on]

Output of 'amixer'

>> amixer

Simple mixer control 'Master',0
  Capabilities: pvolume pvolume-joined pswitch pswitch-joined
  Playback channels: Mono
  Limits: Playback 0 - 87
  Mono: Playback 82 [94%] [-3.75dB] [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] [on]
  Front Right: Playback 0 [0%] [-65.25dB] [on]
Simple mixer control 'Speaker',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 87
  Mono:
  Front Left: Playback 81 [93%] [-4.50dB] [on]
  Front Right: Playback 81 [93%] [-4.50dB] [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 '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 '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 'Capture',0
  Capabilities: cvolume cswitch
  Capture channels: Front Left - Front Right
  Limits: Capture 0 - 63
  Front Left: Capture 59 [94%] [27.00dB] [on]
  Front Right: Capture 59 [94%] [27.00dB] [on]
Simple mixer control 'Auto-Mute Mode',0
  Capabilities: enum
  Items: 'Disabled' 'Enabled'
  Item0: 'Disabled'
Simple mixer control 'Digital',0
  Capabilities: cvolume
  Capture channels: Front Left - Front Right
  Limits: Capture 0 - 120
  Front Left: Capture 117 [98%] [28.50dB]
  Front Right: Capture 117 [98%] [28.50dB]

Any help appreciated.

Last edited by ludog (2024-04-25 16:13:01)