Microphone does not work

[kflee2000]

I am using Linuxmint 21.2 Victoria on an Acer Predator Game Notebook which has an Intel I5 CPU
with Intel UHD graphic card as well as Nvidia GEFORCE RTX. I had difficult to get Microphone working and seeking some help.
Thank you in advance.

These are the testing steps I tried:
(1)

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kflee@Acer-Predator:~$ inxi -Fxxz |grep ALSA
  Sound Server-1: ALSA v: k5.15.0-100-generic running: yes
kflee@Acer-Predator:~$

more data shown:

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Audio:
  Device-1: Intel vendor: Acer Incorporated ALI driver: snd_hda_intel
    v: kernel bus-ID: 0000:00:1f.3 chip-ID: 8086:7a50
  Device-2: NVIDIA vendor: Acer Incorporated ALI driver: snd_hda_intel
    v: kernel bus-ID: 0000:01:00.1 chip-ID: 10de:22be
  Sound Server-1: ALSA v: k5.15.0-100-generic running: yes
  Sound Server-2: PulseAudio v: 15.99.1 running: yes
  Sound Server-3: PipeWire v: 0.3.48 running: yes

(2)

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root@Acer-Predator:/etc/pulse# arecord -l
**** List of CAPTURE Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 0: ALC245 Analog [ALC245 Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 2: ALC245 Alt Analog [ALC245 Alt Analog]
  Subdevices: 3/3
  Subdevice #0: subdevice #0
  Subdevice #1: subdevice #1
  Subdevice #2: subdevice #2

(3)

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kflee@Acer-Predator:~$ arecord -f cd -d 10 --device="hw:0,0" /tmp/test-mic.wav
Recording WAVE '/tmp/test-mic.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo
Warning: rate is not accurate (requested = 44100Hz, got = 48000Hz)
         please, try the plug plugin

Note: I changed the sample rate in file /etc/pulse/daemon.conf and seem make no difference .

(4)

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kflee@Acer-Predator:~$ aplay /tmp/test-mic.wav
^?

Note: hear nothing .

[1000]

I need more info
Check this topic viewtopic.php?t=414694

[kflee2000]

I am still struggling to find a solution of Mic failed to work, maybe said failed to be recognized by the installed driver. The sound output ok,. Will this message give some hint about what I need to install to get it work. Thanks.

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kflee@Acer-Predator:~$ systemctl status --user pipewire.service
● pipewire.service - PipeWire Multimedia Service
     Loaded: loaded (/usr/lib/systemd/user/pipewire.service; enabled; vendor preset: enabled)
     Active: active (running) since Tue 2024-04-09 07:20:38 CST; 21s ago
TriggeredBy: ● pipewire.socket
   Main PID: 25539 (pipewire)
      Tasks: 2 (limit: 37922)
     Memory: 1.2M
        CPU: 13ms
     CGroup: /user.slice/user-1000.slice/user@1000.service/session.slice/pipewire.service
             └─25539 /usr/bin/pipewire

Apr 09 07:20:38 Acer-Predator systemd[1605]: Stopped PipeWire Multimedia Service.
Apr 09 07:20:38 Acer-Predator systemd[1605]: Started PipeWire Multimedia Service.

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kflee@Acer-Predator:~$ 
k
lspci: command not found
kflee@Acer-Predator:~$ lspci |grep audio
0000:00:1f.3 Multimedia audio controller: Intel Corporation Device 7a50 (rev 11)

I have tested sound recorder and it work fine to record the sound output, but not from Microphone. The alsamixer does not show a Mic.

[1000]

It seems to me that this is still too little information.

Official sources of knowledge.

About BBCode and about LC_ALL=C with app to run
1. viewtopic.php?t=83444

BBCode Guide
2. app.php/help/bbcode

System Information inxi
3. viewtopic.php?t=318644

Troubleshooting Guide
4. https://linuxmint-troubleshooting-guide ... en/latest/

Example Blog about sound tips
5. https://easylinuxtipsproject.blogspot.com/p/sound.html

Wiki for this section
6. viewtopic.php?t=389383


What I don't know.

1. What exact system, what version, what environment, what kernel version
It's all in the output

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inxi -Fxxxrz

2. There are various microphones. I don't know what kind you have.

2.1 Jack connector. Various kinds of
https://en.wikipedia.org/wiki/Phone_connector_(audio)
Here, a dedicated driver does not exist.
The microphone output is only analog and it must work.
Only the plugin has to be suitable.

2.2 USB
2.2.1 The model and name of the hardware manufacturer are needed.
2.2.1 Whether the hardware has been detected in output of commnad

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lsusb

You can look for information on the Internet and in the kernel source code by the manufacturer's name and model.
In source code I use command

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grep -ri "name"

3. I don't see what you have on your computer.
and I can't believe that, for example, mic does not exist in alsamixer.
You can upload picture and give a link to picture.

4. The microphone, like any other item, can be damaged.
4.1 If you have the opportunity to test it on another device, check it.
4.2 Check if the hardware has an on/off switch.
4.3 If the microphone is built into the laptop, check the BIOS/UEFI settings to see if the microphone is active/enabled.