Microphone is detected as if it were a speaker.

[GPhilips]

Microphone is detected as if it were a speaker.
It is a microphone with a 3.5mm jack pin

I tried using HDAJackRetask but didn't manage to make it work

[coffee412]

Is this a laptop or desktop?
Perhaps the mic is plugged into the wrong port?

If you look at my tagline I show the command for listing your hardware. Could you post the output so I (and others) can see your hardware profile?

[GPhilips]

It is a laptop.
There is only one plug which is meant for a headset with a microphone

Output:

Code: Select all

System:    Kernel: 5.10.0-23-amd64 x86_64 bits: 64 compiler: gcc v: 10.2.1 Desktop: Cinnamon 5.6.8 Distro: LMDE 5 Elsie 
           base: Debian 11.2 bullseye 
Machine:   Type: Laptop System: Acer product: Aspire E5-571 v: V1.26 serial: <filter> 
           Mobo: Acer model: EA50_HB v: V1.26 serial: <filter> UEFI [Legacy]: Insyde v: 1.26 date: 12/18/2014 
Battery:   ID-1: BAT1 charge: 11.7 Wh condition: 12.0/55.9 Wh (22%) model: SANYO 0032334134314C41 status: Unknown 
Memory:    RAM: total: 3.75 GiB used: 2.3 GiB (61.5%) 
           RAM Report: permissions: Unable to run dmidecode. Root privileges required. 
CPU:       Info: Dual Core model: Intel Core i5-5200U bits: 64 type: MT MCP arch: Broadwell rev: 4 L2 cache: 3 MiB 
           flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 17560 
           Speed: 798 MHz min/max: 500/2700 MHz Core speeds (MHz): 1: 798 2: 798 3: 798 4: 798 
Graphics:  Device-1: Intel HD Graphics 5500 vendor: Acer Incorporated ALI driver: i915 v: kernel bus ID: 00:02.0 
           Device-2: Chicony HD WebCam type: USB driver: uvcvideo bus ID: 2-7:5 
           Display: x11 server: X.Org 1.20.11 driver: loaded: modesetting unloaded: fbdev,vesa resolution: 1366x768~60Hz 
           OpenGL: renderer: Mesa Intel HD Graphics 5500 (BDW GT2) v: 4.6 Mesa 20.3.5 direct render: Yes 
Audio:     Device-1: Intel Broadwell-U Audio vendor: Acer Incorporated ALI driver: snd_hda_intel v: kernel bus ID: 00:03.0 
           Device-2: Intel Wildcat Point-LP High Definition Audio vendor: Acer Incorporated ALI driver: snd_hda_intel 
           v: kernel bus ID: 00:1b.0 
           Sound Server: ALSA v: k5.10.0-23-amd64 
Network:   Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet vendor: Acer Incorporated ALI driver: r8169 
           v: kernel port: 3000 bus ID: 02:00.1 
           IF: enp2s0f1 state: down mac: <filter> 
           Device-2: Intel Wireless 3160 driver: iwlwifi v: kernel port: 3000 bus ID: 03:00.0 
           IF: wlp3s0 state: up mac: <filter> 
Bluetooth: Device-1: Intel Bluetooth wireless interface type: USB driver: btusb v: 0.8 bus ID: 2-5:4 
           Report: ID: hci0 state: down address: <filter> 
Drives:    Local Storage: total: 931.51 GiB used: 517.14 GiB (55.5%) 
           ID-1: /dev/sda vendor: Seagate model: ST1000LM024 HN-M101MBB size: 931.51 GiB 
Partition: ID-1: / size: 625.04 GiB used: 516.88 GiB (82.7%) fs: ext4 dev: /dev/sda3 
Swap:      ID-1: swap-1 type: partition size: 2.45 GiB used: 266.3 MiB (10.6%) dev: /dev/sda4 
Sensors:   System Temperatures: cpu: 40.0 C mobo: N/A 
           Fan Speeds (RPM): N/A 
Repos:     Packages: 3484 
           No active apt repos in: /etc/apt/sources.list 
           No active apt repos in: /etc/apt/sources.list.d/additional-repositories.list 
           Active apt repos in: /etc/apt/sources.list.d/google-earth-pro.list 
           1: deb [arch=amd64] http://dl.google.com/linux/earth/deb/ stable main
           Active apt repos in: /etc/apt/sources.list.d/official-package-repositories.list 
           1: deb https://mirror.ufscar.br/mint-archive elsie main upstream import backport
           2: deb http://ftp.br.debian.org/debian/ bullseye main contrib non-free
           3: deb http://ftp.br.debian.org/debian/ bullseye-updates main contrib non-free
           4: deb http://security.debian.org/ bullseye-security main contrib non-free
           5: deb http://ftp.br.debian.org/debian/ bullseye-backports main contrib non-free
Info:      Processes: 260 Uptime: 1h 41m Init: systemd runlevel: 5 Compilers: gcc: 10.2.1 Shell: Bash v: 5.1.4 inxi: 3.3.01

[coffee412]

Ok, This is the Debian edition of LM.

I find Debian a great operating system for servers. For a multimedia computer - not so much. There are rough points in debian concerning multimedia and this is one of them. Do not misunderstand me, LMDE is great but has some rough points is all I am saying.

I have not ever used LMDE or played around with it. I do see its using the ALSA sound system and not pulseaudio. While its certainly possible to fix your problem I may not be the one to really help you with it. However, Posting your hardware profile is very important and will hopefully draw help from others soon as they can now see your hardware.

[MiZoG]

sudo apt install pavucontrol (PulseAudio mixer)

Switch to "configuration" tab find the the "built-in audio" you want to turn into a mic and change its profile.
I bet "Analog Stereo Duplex" will let your system automatically sense output/input devices.
"Analog Stereo Input" will use the port only for mic-in.

[Hansl]

It is a laptop.
There is only one plug which is meant for a headset with a microphone

These combined plugs have a fourth ring to connect the microphone.
If you plug in only a microphone, having a jack with only two or three rings, it will electrically connect to the headphone amplifier output which cannot work.
In this case you would have to acquire an adapter which splits the combined plug into two separate sockets.