systemctl status --user pipewire*

gistfile1.txt

● pipewire.socket - Multimedia System
     Loaded: loaded (/usr/lib/systemd/user/pipewire.socket; enabled; vendor preset: enabled)
     Active: active (running) since Fri 2021-08-06 17:56:27 CDT; 33min ago
   Triggers: ● pipewire.service
     Listen: /run/user/1000/pipewire-0 (Stream)
     CGroup: /user.slice/user-1000.slice/user@1000.service/pipewire.socket

Aug 06 17:56:27 souryuu systemd[1603]: Listening on Multimedia System.

● pipewire.service - Multimedia Service
     Loaded: loaded (/usr/lib/systemd/user/pipewire.service; enabled; vendor preset: disabled)
     Active: active (running) since Fri 2021-08-06 17:56:27 CDT; 33min ago
TriggeredBy: ● pipewire.socket
   Main PID: 1610 (pipewire)
     CGroup: /user.slice/user-1000.slice/user@1000.service/session.slice/pipewire.service
             └─1610 /usr/bin/pipewire

Aug 06 18:15:32 souryuu pipewire[1610]: alsa-pcm hw:2: snd_pcm_drop No such device
Aug 06 18:15:32 souryuu pipewire[1610]: hw:2: close failed: No such device
Aug 06 18:28:38 souryuu pipewire[1610]: ALSA lib confmisc.c:1281:(snd_func_refer) Unable to find definition 'cards.USB-Audio.pcm.front.0:CARD=2'
Aug 06 18:28:38 souryuu pipewire[1610]: ALSA lib conf.c:4732:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
Aug 06 18:28:38 souryuu pipewire[1610]: ALSA lib conf.c:5220:(snd_config_expand) Evaluate error: No such file or directory
Aug 06 18:28:38 souryuu pipewire[1610]: ALSA lib pcm.c:2642:(snd_pcm_open_noupdate) Unknown PCM front:2
Aug 06 18:28:38 souryuu pipewire[1610]: 'front:2': playback open failed: No such file or directory
Aug 06 18:28:38 souryuu pipewire[1610]: adapter 0x563fe17b4ea0: can't get format: No such file or directory
Aug 06 18:28:38 souryuu pipewire[1610]: usage: node.name=<string>
Aug 06 18:28:46 souryuu pipewire[1610]: 1 events suppressed

● pipewire-pulse.socket - PipeWire PulseAudio
     Loaded: loaded (/usr/lib/systemd/user/pipewire-pulse.socket; enabled; vendor preset: enabled)
     Active: active (running) since Fri 2021-08-06 17:56:27 CDT; 33min ago
   Triggers: ● pipewire-pulse.service
     Listen: /run/user/1000/pulse/native (Stream)
     CGroup: /user.slice/user-1000.slice/user@1000.service/pipewire-pulse.socket

Aug 06 17:56:27 souryuu systemd[1603]: Listening on PipeWire PulseAudio.

● pipewire-pulse.service - PipeWire PulseAudio
     Loaded: loaded (/usr/lib/systemd/user/pipewire-pulse.service; enabled; vendor preset: enabled)
     Active: active (running) since Fri 2021-08-06 17:56:27 CDT; 33min ago
TriggeredBy: ● pipewire-pulse.socket
   Main PID: 1612 (pipewire-pulse)
     CGroup: /user.slice/user-1000.slice/user@1000.service/session.slice/pipewire-pulse.service
             └─1612 /usr/bin/pipewire-pulse

Aug 06 18:00:16 souryuu pipewire-pulse[1612]: 'CHECK_PORT(this, direction, port_id)' failed at ../spa/plugins/audioconvert/merger.c:1069 impl_node_port_set_param()
Aug 06 18:00:16 souryuu pipewire-pulse[1612]: node 0x5579e61f3550: error unset format output: Invalid argument
Aug 06 18:00:55 souryuu pipewire-pulse[1612]: 'CHECK_PORT(this, direction, port_id)' failed at ../spa/plugins/audioconvert/merger.c:1069 impl_node_port_set_param()
Aug 06 18:00:55 souryuu pipewire-pulse[1612]: node 0x5579e61f3550: error unset format output: Invalid argument
Aug 06 18:01:05 souryuu pipewire-pulse[1612]: 'CHECK_PORT(this, direction, port_id)' failed at ../spa/plugins/audioconvert/merger.c:1069 impl_node_port_set_param()
Aug 06 18:01:05 souryuu pipewire-pulse[1612]: node 0x5579e5d409d0: error unset format output: Invalid argument
Aug 06 18:11:46 souryuu pipewire-pulse[1612]: 'CHECK_PORT(this, direction, port_id)' failed at ../spa/plugins/audioconvert/merger.c:1069 impl_node_port_set_param()
Aug 06 18:11:46 souryuu pipewire-pulse[1612]: node 0x5579e5d56310: error unset format output: Invalid argument
Aug 06 18:15:12 souryuu pipewire-pulse[1612]: 'CHECK_PORT(this, direction, port_id)' failed at ../spa/plugins/audioconvert/merger.c:1069 impl_node_port_set_param()
Aug 06 18:15:12 souryuu pipewire-pulse[1612]: node 0x5579e70b12f0: error unset format output: Invalid argument