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#1 2016-04-23 01:34:42

tio
Member
Registered: 2015-02-22
Posts: 8

Microphone not working

Hello everyone.

I can't get the microphone to work properly. I've looked on every topic in the forum related with my problem, with no luck.

Symptoms are:

 arecord -vv -f dat test.wav 

Works just fine.

 arecord -d 5 test.wav 

Doesn't work. All I can hear when I play it is really, really low noise, completely saturated.

Hangouts, Skype won't work either. Cheese also records really low audio, completely saturated.

Any clues?

Thanks in advance.

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#2 2016-04-23 19:02:41

R00KIE
Forum Fellow
From: Between a computer and a chair
Registered: 2008-09-14
Posts: 4,734

Re: Microphone not working

Those two are not the same thing. You have to provide more details, such as if you are using pulseaudio, what you have in your asound.conf, and if you have tried to make things work by fiddling with the alsamixer settings.


R00KIE
Tm90aGluZyB0byBzZWUgaGVyZSwgbW92ZSBhbG9uZy4K

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#3 2016-04-24 21:52:27

tio
Member
Registered: 2015-02-22
Posts: 8

Re: Microphone not working

I'm using pulseaudio, this is my /etc/asound.conf:

# Use PulseAudio by default
pcm.!default {
  type pulse
  fallback "sysdefault"
  hint {
    show on
    description "Default ALSA Output (currently PulseAudio Sound Server)"
  }
}

ctl.!default {
  type pulse
  fallback "sysdefault"
}

# vim:set ft=alsaconf:

I've tried every possible alsamixer setting.
I forgot to mention, if I plug headphones with microphone it works fine. The internal mic of the laptop is the one not working.

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#4 2016-04-29 07:52:28

V1del
Forum Moderator
Registered: 2012-10-16
Posts: 21,409

Re: Microphone not working

Can you post

arecord -l
pacmd list-sources
pacmd list-cards

Last edited by V1del (2016-04-29 13:35:25)

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#5 2016-05-04 18:34:32

tio
Member
Registered: 2015-02-22
Posts: 8

Re: Microphone not working

Thanks for your reply. Here it goes:

$ arecord -l
**** List of CAPTURE Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 0: CX20751/2 Analog [CX20751/2 Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
$ pacmd list-sources
4 source(s) available.
    index: 0
	name: <alsa_input.hw_0>
	driver: <module-alsa-source.c>
	flags: HARDWARE DECIBEL_VOLUME LATENCY DYNAMIC_LATENCY
	state: SUSPENDED
	suspend cause: IDLE 
	priority: 9950
	volume: front-left: 74881 / 114% / 3.47 dB,   front-right: 74881 / 114% / 3.47 dB
	        balance 0.00
	base volume: 65536 / 100% / 0.00 dB
	volume steps: 65537
	muted: no
	current latency: 0.00 ms
	max rewind: 0 KiB
	sample spec: s16le 2ch 44100Hz
	channel map: front-left,front-right
	             Stereo
	used by: 0
	linked by: 0
	configured latency: 0.00 ms; range is 0.50 .. 2000.00 ms
	module: 5
	properties:
		alsa.resolution_bits = "16"
		device.api = "alsa"
		device.class = "sound"
		alsa.class = "generic"
		alsa.subclass = "generic-mix"
		alsa.name = "CX20751/2 Analog"
		alsa.id = "CX20751/2 Analog"
		alsa.subdevice = "0"
		alsa.subdevice_name = "subdevice #0"
		alsa.device = "0"
		alsa.card = "0"
		alsa.card_name = "HDA Intel PCH"
		alsa.long_card_name = "HDA Intel PCH at 0xc0614000 irq 47"
		alsa.driver_name = "snd_hda_intel"
		device.bus_path = "pci-0000:00:1b.0"
		sysfs.path = "/devices/pci0000:00/0000:00:1b.0/sound/card0"
		device.bus = "pci"
		device.vendor.id = "8086"
		device.vendor.name = "Intel Corporation"
		device.product.id = "9c20"
		device.product.name = "8 Series HD Audio Controller"
		device.form_factor = "internal"
		device.string = "hw:0"
		device.buffering.buffer_size = "352800"
		device.buffering.fragment_size = "176400"
		device.access_mode = "mmap+timer"
		device.description = "Built-in Audio"
		device.icon_name = "audio-input-microphone-pci"

    index: 1
	name: <alsa_output.pci-0000_00_03.0.hdmi-stereo.monitor>
	driver: <module-alsa-card.c>
	flags: DECIBEL_VOLUME LATENCY DYNAMIC_LATENCY
	state: SUSPENDED
	suspend cause: IDLE 
	priority: 1950
	volume: front-left: 300000 / 458% / 39.64 dB,   front-right: 300000 / 458% / 39.64 dB
	        balance 0.00
	base volume: 65536 / 100% / 0.00 dB
	volume steps: 65537
	muted: no
	current latency: 0.00 ms
	max rewind: 0 KiB
	sample spec: s16le 2ch 44100Hz
	channel map: front-left,front-right
	             Stereo
	used by: 0
	linked by: 0
	configured latency: 0.00 ms; range is 0.50 .. 1999.82 ms
	monitor_of: 0
	card: 0 <alsa_card.pci-0000_00_03.0>
	module: 7
	properties:
		device.description = "Monitor of Built-in Audio Digital Stereo (HDMI)"
		device.class = "monitor"
		alsa.card = "1"
		alsa.card_name = "HDA Intel HDMI"
		alsa.long_card_name = "HDA Intel HDMI at 0xc0610000 irq 48"
		alsa.driver_name = "snd_hda_intel"
		device.bus_path = "pci-0000:00:03.0"
		sysfs.path = "/devices/pci0000:00/0000:00:03.0/sound/card1"
		device.bus = "pci"
		device.vendor.id = "8086"
		device.vendor.name = "Intel Corporation"
		device.product.id = "0a0c"
		device.product.name = "Haswell-ULT HD Audio Controller"
		device.form_factor = "internal"
		device.string = "1"
		module-udev-detect.discovered = "1"
		device.icon_name = "audio-card-pci"

    index: 2
	name: <alsa_output.pci-0000_00_1b.0.analog-stereo.monitor>
	driver: <module-alsa-card.c>
	flags: DECIBEL_VOLUME LATENCY DYNAMIC_LATENCY
	state: SUSPENDED
	suspend cause: IDLE 
	priority: 1950
	volume: front-left: 65536 / 100% / 0.00 dB,   front-right: 65536 / 100% / 0.00 dB
	        balance 0.00
	base volume: 65536 / 100% / 0.00 dB
	volume steps: 65537
	muted: no
	current latency: 0.00 ms
	max rewind: 0 KiB
	sample spec: s16le 2ch 44100Hz
	channel map: front-left,front-right
	             Stereo
	used by: 0
	linked by: 0
	configured latency: 0.00 ms; range is 0.50 .. 2000.00 ms
	monitor_of: 1
	card: 1 <alsa_card.pci-0000_00_1b.0>
	module: 20
	properties:
		device.description = "Monitor of Built-in Audio Analog Stereo"
		device.class = "monitor"
		alsa.card = "0"
		alsa.card_name = "HDA Intel PCH"
		alsa.long_card_name = "HDA Intel PCH at 0xc0614000 irq 47"
		alsa.driver_name = "snd_hda_intel"
		device.bus_path = "pci-0000:00:1b.0"
		sysfs.path = "/devices/pci0000:00/0000:00:1b.0/sound/card0"
		device.bus = "pci"
		device.vendor.id = "8086"
		device.vendor.name = "Intel Corporation"
		device.product.id = "9c20"
		device.product.name = "8 Series HD Audio Controller"
		device.form_factor = "internal"
		device.string = "0"
		module-udev-detect.discovered = "1"
		device.icon_name = "audio-card-pci"

  * index: 3
	name: <alsa_input.pci-0000_00_1b.0.analog-stereo>
	driver: <module-alsa-card.c>
	flags: HARDWARE HW_MUTE_CTRL HW_VOLUME_CTRL DECIBEL_VOLUME LATENCY DYNAMIC_LATENCY
	state: SUSPENDED
	suspend cause: IDLE 
	priority: 9959
	volume: front-left: 65535 / 100% / -0.00 dB,   front-right: 65535 / 100% / -0.00 dB
	        balance 0.00
	base volume: 13076 /  20% / -42.00 dB
	volume steps: 65537
	muted: no
	current latency: 0.00 ms
	max rewind: 0 KiB
	sample spec: s16le 2ch 44100Hz
	channel map: front-left,front-right
	             Stereo
	used by: 0
	linked by: 0
	configured latency: 0.00 ms; range is 0.50 .. 2000.00 ms
	card: 1 <alsa_card.pci-0000_00_1b.0>
	module: 20
	properties:
		alsa.resolution_bits = "16"
		device.api = "alsa"
		device.class = "sound"
		alsa.class = "generic"
		alsa.subclass = "generic-mix"
		alsa.name = "CX20751/2 Analog"
		alsa.id = "CX20751/2 Analog"
		alsa.subdevice = "0"
		alsa.subdevice_name = "subdevice #0"
		alsa.device = "0"
		alsa.card = "0"
		alsa.card_name = "HDA Intel PCH"
		alsa.long_card_name = "HDA Intel PCH at 0xc0614000 irq 47"
		alsa.driver_name = "snd_hda_intel"
		device.bus_path = "pci-0000:00:1b.0"
		sysfs.path = "/devices/pci0000:00/0000:00:1b.0/sound/card0"
		device.bus = "pci"
		device.vendor.id = "8086"
		device.vendor.name = "Intel Corporation"
		device.product.id = "9c20"
		device.product.name = "8 Series HD Audio Controller"
		device.form_factor = "internal"
		device.string = "front:0"
		device.buffering.buffer_size = "352800"
		device.buffering.fragment_size = "176400"
		device.access_mode = "mmap+timer"
		device.profile.name = "analog-stereo"
		device.profile.description = "Analog Stereo"
		device.description = "Built-in Audio Analog Stereo"
		alsa.mixer_name = "Conexant CX20751/2"
		alsa.components = "HDA:14f1510f,17aa3801,00100100"
		module-udev-detect.discovered = "1"
		device.icon_name = "audio-card-pci"
	ports:
		analog-input-internal-mic: Internal Microphone (priority 8900, latency offset 0 usec, available: unknown)
			properties:
				device.icon_name = "audio-input-microphone"
		analog-input-mic: Microphone (priority 8700, latency offset 0 usec, available: no)
			properties:
				device.icon_name = "audio-input-microphone"
	active port: <analog-input-internal-mic>
$ pacmd list-cards
2 card(s) available.
    index: 0
	name: <alsa_card.pci-0000_00_03.0>
	driver: <module-alsa-card.c>
	owner module: 7
	properties:
		alsa.card = "1"
		alsa.card_name = "HDA Intel HDMI"
		alsa.long_card_name = "HDA Intel HDMI at 0xc0610000 irq 48"
		alsa.driver_name = "snd_hda_intel"
		device.bus_path = "pci-0000:00:03.0"
		sysfs.path = "/devices/pci0000:00/0000:00:03.0/sound/card1"
		device.bus = "pci"
		device.vendor.id = "8086"
		device.vendor.name = "Intel Corporation"
		device.product.id = "0a0c"
		device.product.name = "Haswell-ULT HD Audio Controller"
		device.form_factor = "internal"
		device.string = "1"
		device.description = "Built-in Audio"
		module-udev-detect.discovered = "1"
		device.icon_name = "audio-card-pci"
	profiles:
		output:hdmi-stereo: Digital Stereo (HDMI) Output (priority 5400, available: unknown)
		output:hdmi-surround: Digital Surround 5.1 (HDMI) Output (priority 300, available: unknown)
		output:hdmi-surround71: Digital Surround 7.1 (HDMI) Output (priority 300, available: unknown)
		output:hdmi-stereo-extra1: Digital Stereo (HDMI 2) Output (priority 5200, available: unknown)
		output:hdmi-surround-extra1: Digital Surround 5.1 (HDMI 2) Output (priority 100, available: unknown)
		output:hdmi-surround71-extra1: Digital Surround 7.1 (HDMI 2) Output (priority 100, available: unknown)
		output:hdmi-stereo-extra2: Digital Stereo (HDMI 3) Output (priority 5200, available: unknown)
		output:hdmi-surround-extra2: Digital Surround 5.1 (HDMI 3) Output (priority 100, available: unknown)
		output:hdmi-surround71-extra2: Digital Surround 7.1 (HDMI 3) Output (priority 100, available: unknown)
		off: Off (priority 0, available: unknown)
	active profile: <output:hdmi-stereo>
	sinks:
		alsa_output.pci-0000_00_03.0.hdmi-stereo/#0: Built-in Audio Digital Stereo (HDMI)
	sources:
		alsa_output.pci-0000_00_03.0.hdmi-stereo.monitor/#1: Monitor of Built-in Audio Digital Stereo (HDMI)
	ports:
		hdmi-output-0: HDMI / DisplayPort (priority 5900, latency offset 0 usec, available: no)
			properties:
				device.icon_name = "video-display"
		hdmi-output-1: HDMI / DisplayPort 2 (priority 5800, latency offset 0 usec, available: no)
			properties:
				device.icon_name = "video-display"
		hdmi-output-2: HDMI / DisplayPort 3 (priority 5700, latency offset 0 usec, available: no)
			properties:
				device.icon_name = "video-display"

    index: 1
	name: <alsa_card.pci-0000_00_1b.0>
	driver: <module-alsa-card.c>
	owner module: 20
	properties:
		alsa.card = "0"
		alsa.card_name = "HDA Intel PCH"
		alsa.long_card_name = "HDA Intel PCH at 0xc0614000 irq 47"
		alsa.driver_name = "snd_hda_intel"
		device.bus_path = "pci-0000:00:1b.0"
		sysfs.path = "/devices/pci0000:00/0000:00:1b.0/sound/card0"
		device.bus = "pci"
		device.vendor.id = "8086"
		device.vendor.name = "Intel Corporation"
		device.product.id = "9c20"
		device.product.name = "8 Series HD Audio Controller"
		device.form_factor = "internal"
		device.string = "0"
		device.description = "Built-in Audio"
		module-udev-detect.discovered = "1"
		device.icon_name = "audio-card-pci"
	profiles:
		input:analog-stereo: Analog Stereo Input (priority 60, available: unknown)
		output:analog-stereo: Analog Stereo Output (priority 6000, available: unknown)
		output:analog-stereo+input:analog-stereo: Analog Stereo Duplex (priority 6060, available: unknown)
		off: Off (priority 0, available: unknown)
	active profile: <output:analog-stereo+input:analog-stereo>
	sinks:
		alsa_output.pci-0000_00_1b.0.analog-stereo/#1: Built-in Audio Analog Stereo
	sources:
		alsa_output.pci-0000_00_1b.0.analog-stereo.monitor/#2: Monitor of Built-in Audio Analog Stereo
		alsa_input.pci-0000_00_1b.0.analog-stereo/#3: Built-in Audio Analog Stereo
	ports:
		analog-input-internal-mic: Internal Microphone (priority 8900, latency offset 0 usec, available: unknown)
			properties:
				device.icon_name = "audio-input-microphone"
		analog-input-mic: Microphone (priority 8700, latency offset 0 usec, available: no)
			properties:
				device.icon_name = "audio-input-microphone"
		analog-output-speaker: Speakers (priority 10000, latency offset 0 usec, available: no)
			properties:
				device.icon_name = "audio-speakers"
		analog-output-headphones: Headphones (priority 9000, latency offset 0 usec, available: yes)
			properties:
				device.icon_name = "audio-headphones"

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