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Microphone not recognized

Graphical Environments, Managers, Multimedia & Desktop questions.
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hstoellinger
Posts: 52
Joined: 2010-11-20 18:31

Microphone not recognized

#1 Post by hstoellinger »

Hello everybody,
I use two Linux-boxes, connected by LAN -

(1) a Lenovo box, running Debian 10 (buster), kernel: 5.10.0-0.bpo.8-amd64 x86_64
Audio: Device-1: Intel 5 Series/3400 Series High Definition Audio driver: snd_hda_intel
Device-2: Generalplus type: USB driver: snd-usb-audio,uvcvideo
Sound Server: ALSA v: k5.10.0-0.bpo.8-amd64
(2) a Sony Laptop, running Kubuntu 21.04, kernel: 5.11.0-38-generic x86_64.
Audio: Device-1: Intel 82801I HD Audio driver: snd_hda_intel
Device-2: Generalplus HD 1080P WebCam type: USB driver: snd-usb-audio,uvcvideo
Sound Server: ALSA v: k5.11.0-38-generic
Both the kernel and the ALSA Sound Server are newer on the laptop. Should I maybe just
upgrade both these components - provided this is possible on Debian 10?

As against on the laptop, there is NO built-in microphone device on the Lenovo/Debian machine,
but the webcam (Generalplus...) does of course include one that works on the laptop.

I am trying out Zoom on both machines with the result that everything works fine on the Laptop,
while on the Debian box, the microphone is not recognized (the video is o.k.). I wonder what
might be the cause of the problem.

Regards H. Stoellinger

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FreewheelinFrank
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Re: Microphone not recognized

#2 Post by FreewheelinFrank »

Code: Select all

arecord -l
Will tell you what input devices you have.

Code: Select all

amixer -c[n]
Where n=card no.

Will tell you alsamixer settings for the mic (is it muted?).

Code: Select all

pacmd list-sources
Will tell you Pulse Audio settings for the mic (is it muted, is it active?).

hstoellinger
Posts: 52
Joined: 2010-11-20 18:31

Re: Microphone not recognized

#3 Post by hstoellinger »

Hello,
Thanks for trying to help...
Here is what my Debian system tells me...
----------------------------

Code: Select all

sudo arecord -l
[sudo] Passwort for hs: 
**** Liste der Hardware-Geraete (CAPTURE) ****
Karte 0: WebCam [HD 1080P WebCam], Gerät 0: USB Audio [USB Audio]
Sub-Geräte: 0/1
Sub-Gerät #0: subdevice #0
Karte 1: MID [HDA Intel MID], Gerät 0: ALC662 rev1 Analog [ALC662 rev1 Analog]
Sub-Geräte: 1/1
Sub-Gerät #0: subdevice #0
Karte 1: MID [HDA Intel MID], Gerät 2: ALC662 rev1 Alt Analog [ALC662 rev1 Alt Analog]
Sub-Geräte: 1/1
Sub-Gerät #0: subdevice #0

amixer -c0
Simple mixer control 'Mic',0
Capabilities: cvolume cvolume-joined cswitch cswitch-joined
Capture channels: Mono
Limits: Capture 0 - 5120
Mono: Capture 5120 [100%] [50.00dB] [on]

pacmd list-sources
2 source(s) available.
index: 0
name: <alsa_output.pci-0000_00_1b.0.analog-stereo.monitor>
...
driver: <module-alsa-card.c>
device.icon_name = "audio-card-pci"

* index: 1
name: <alsa_input.usb-_HD_1080P_WebCam-02.mono-fallback>
driver: <module-alsa-card.c>
flags: HARDWARE HW_MUTE_CTRL HW_VOLUME_CTRL DECIBEL_VOLUME LATENCY DYNAMIC_LATENCY
state: RUNNING
suspend cause: (none)
priority: 9040
volume: mono: 65536 / 100% / 0,00 dB
balance 0,00
base volume: 9619 /  15% / -50,00 dB
volume steps: 65537
muted: no
current latency: 0,00 ms
max rewind: 0 KiB
sample spec: s16le 1ch 16000Hz
channel map: mono
Mono
used by: 2
linked by: 2
configured latency: 40,00 ms; range is 2,00 .. 2000,00 ms
card: 1 <alsa_card.usb-_HD_1080P_WebCam-02>
module: 7
properties:
alsa.resolution_bits = "16"
device.api = "alsa"
device.class = "sound"
alsa.class = "generic"
alsa.subclass = "generic-mix"
alsa.name = "USB Audio"
alsa.id = "USB Audio"
alsa.subdevice = "0"
alsa.subdevice_name = "subdevice #0"
alsa.device = "0"
alsa.card = "0"
alsa.card_name = "HD 1080P WebCam"
alsa.long_card_name = "HD 1080P WebCam at usb-0000:00:1d.0-1.7, high speed"
alsa.driver_name = "snd_usb_audio"
device.bus_path = "pci-0000:00:1d.0-usb-0:1.7:1.2"
sysfs.path = "/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.7/2-1.7:1.2/sound/card0"
udev.id = "usb-_HD_1080P_WebCam-02"
device.bus = "usb"
device.vendor.id = "1b3f"
device.vendor.name = "Generalplus Technology Inc."
device.product.id = "2020"
device.product.name = "HD 1080P WebCam"
device.serial = "_HD_1080P_WebCam"
device.form_factor = "webcam"
device.string = "hw:0"
device.buffering.buffer_size = "64000"
device.buffering.fragment_size = "32000"
device.access_mode = "mmap+timer"
device.profile.name = "mono-fallback"
device.profile.description = "Mono"
device.description = "HD 1080P WebCam Mono"
alsa.mixer_name = "USB Mixer"
alsa.components = "USB1b3f:2020"
module-udev-detect.discovered = "1"
device.icon_name = "camera-web-usb"
ports:
analog-input-mic: Mikrofon (priority 8700, latency offset 0 usec, available: unknown)
properties:
device.icon_name = "audio-input-microphone"
active port: <analog-input-mic>
---------------------------------
Last edited by hstoellinger on 2021-10-28 10:56, edited 1 time in total.

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Re: Microphone not recognized

#4 Post by FreewheelinFrank »

Thanks,

Could you edit the post and put the outputs in code tags (</>) please?

As far as I can see the microphone isn't muted, the sound is turned up and the correct card is active.

I suspect that that the hardware is new and not identified correctly by even the backport kernel in Buster as you suspected. (There is a more recent backport kernel, 5.10.46+4~bpo10+1 - you could try that.)

Could you post the

Code: Select all

 pacmd list-sources
output for the working computer? The webcam may be identified differently, which would confirm this.

hstoellinger
Posts: 52
Joined: 2010-11-20 18:31

Re: Microphone not recognized

#5 Post by hstoellinger »

Here comes the output of the "working" system (Sony Laptop, Kubuntu 21.04)...

Code: Select all

pacmd list-sources
3 source(s) available.
index: 0
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: 1030
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: 0
card: 0 <alsa_card.pci-0000_00_1b.0>
module: 7
properties:
device.description = "Monitor of Eingebautes Tongerät Analog Stereo"
device.class = "monitor"
alsa.card = "0"
alsa.card_name = "HDA Intel"
alsa.long_card_name = "HDA Intel at 0xdaa00000 irq 35"
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 = "293e"
device.product.name = "82801I (ICH9 Family) HD Audio Controller"
device.form_factor = "internal"
device.string = "0"
module-udev-detect.discovered = "1"
device.icon_name = "audio-card-pci"
index: 1
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: 9039
volume: front-left: 3084 /   5% / -79,64 dB,   front-right: 3084 /   5% / -79,64 dB
balance 0,00
base volume: 20724 /  32% / -30,00 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: 0 <alsa_card.pci-0000_00_1b.0>
module: 7
properties:
alsa.resolution_bits = "16"
device.api = "alsa"
device.class = "sound"
alsa.class = "generic"
alsa.subclass = "generic-mix"
alsa.name = "ALC889 Analog"
alsa.id = "ALC889 Analog"
alsa.subdevice = "0"
alsa.subdevice_name = "subdevice #0"
alsa.device = "0"
alsa.card = "0"
alsa.card_name = "HDA Intel"
alsa.long_card_name = "HDA Intel at 0xdaa00000 irq 35"
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 = "293e"
device.product.name = "82801I (ICH9 Family) 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 = "Eingebautes Tongerät Analog Stereo"
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>
* index: 2
name: <alsa_input.usb-_HD_1080P_WebCam-02.mono-fallback>
driver: <module-alsa-card.c>
flags: HARDWARE HW_MUTE_CTRL HW_VOLUME_CTRL DECIBEL_VOLUME LATENCY DYNAMIC_LATENCY
state: SUSPENDED
suspend cause: IDLE
priority: 9040
volume: mono: 65536 / 100% / 0,00 dB
balance 0,00
base volume: 9619 /  15% / -50,00 dB
volume steps: 65537
muted: no
current latency: 0,00 ms
max rewind: 0 KiB
sample spec: s16le 1ch 16000Hz
channel map: mono
Mono
used by: 0
linked by: 0
configured latency: 0,00 ms; range is 0,50 .. 2000,00 ms
card: 1 <alsa_card.usb-_HD_1080P_WebCam-02>
module: 25
properties:
alsa.resolution_bits = "16"
device.api = "alsa"
device.class = "sound"
alsa.class = "generic"
alsa.subclass = "generic-mix"
alsa.name = "USB Audio"
alsa.id = "USB Audio"
alsa.subdevice = "0"
alsa.subdevice_name = "subdevice #0"
alsa.device = "0"
alsa.card = "1"
alsa.card_name = "HD 1080P WebCam"
alsa.long_card_name = "HD 1080P WebCam at usb-0000:00:1d.7-2, high speed"
alsa.driver_name = "snd_usb_audio"
device.bus_path = "pci-0000:00:1d.7-usb-0:2:1.2"
sysfs.path = "/devices/pci0000:00/0000:00:1d.7/usb2/2-2/2-2:1.2/sound/card1"
udev.id = "usb-_HD_1080P_WebCam-02"
device.bus = "usb"
device.vendor.id = "1b3f"
device.vendor.name = "Generalplus Technology Inc."
device.product.id = "2020"
device.product.name = "HD 1080P WebCam"
device.serial = "_HD_1080P_WebCam"
device.form_factor = "webcam"
device.string = "hw:1"
device.buffering.buffer_size = "64000"
device.buffering.fragment_size = "32000"
device.access_mode = "mmap+timer"
device.profile.name = "mono-fallback"
device.profile.description = "Mono"
device.description = "HD 1080P WebCam Mono"
module-udev-detect.discovered = "1"
device.icon_name = "camera-web-usb"
ports:
analog-input-mic: Microphone (priority 8700, latency offset 0 usec, available: unknown)
properties:
device.icon_name = "audio-input-microphone"
active port: <analog-input-mic>

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Re: Microphone not recognized

#6 Post by FreewheelinFrank »

The webcam is identified in the same way, so no clues there, as far as I can see.

Just to rule out the possibility that this is a Zoom issue, could you try:

Code: Select all

$ arecord  hw:0,0 -f S16_LE -d 10  /tmp/test-mic.wav
and speak into the mic for ten seconds and then run

Code: Select all

$ aplay /tmp/test-mic.wav
to play back the test.

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