Fedora 38: the microphone records alien sounds

Ask Fedora
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1

Hello gentleman!

I have the Fedora 38 Workstation. And all works perfect, but one day ago my microphone started to record strange alien sounds.

I’ve searched some information from commands:

arecord -lL

**** List of CAPTURE Hardware Devices ****
card 0: Camera [A4tech FHD 1080P PC Camera], device 0: USB Audio [USB Audio]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 2: Generic [HD-Audio Generic], device 0: ALC1220 Analog [ALC1220 Analog]
  Subdevices: 0/1
  Subdevice #0: subdevice #0
card 2: Generic [HD-Audio Generic], device 2: ALC1220 Alt Analog [ALC1220 Alt Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

ALC1220 is my recording device (the rear microphone).

 systemctl --user status pipewire
● pipewire.service - PipeWire Multimedia Service
     Loaded: loaded (/usr/lib/systemd/user/pipewire.service; disabled; preset: disabled)
    Drop-In: /usr/lib/systemd/user/pipewire.service.d
             └─00-uresourced.conf
             /usr/lib/systemd/user/service.d
             └─10-timeout-abort.conf
     Active: active (running) since Thu 2023-08-24 10:59:52 MSK; 5min ago
TriggeredBy: ● pipewire.socket
   Main PID: 3203 (pipewire)
      Tasks: 3 (limit: 38222)
     Memory: 10.6M
        CPU: 1.280s
     CGroup: /user.slice/user-1000.slice/user@1000.service/session.slice/pipewire.service
             └─3203 /usr/bin/pipewire

Aug 24 10:59:52 lian-li systemd[2943]: Started pipewire.service - PipeWire Multimedia Service.

When in GRUB I load the Fedora 37 the microphone works perfect.

Actually, I’ve noticed the strange thing in Audacity: one second there is equal to twelve seconds in real-time…

The test recording is HERE.

Should I purge pipewire and install it again?

2

I’ve run that command:

sudo dnf downgrade pipewire --allowerasing

and have rolled back to the pipewire-0.3.67-1.fc38 packages.

Aliens went away!!!

3

The problem returns…

I’ve excluded the pipewire package in dnf, but after some time the problem returns.

After rebooting the microphone works normal.