Wireplumber does show any mention of an ALSA card that is present in the system, but is opened by another application.
Supposing the system have two audio cards: S3
and PCH
. Other application (e.g. pulseaudio
) non-exclusively opens the PCH
soundcard.
Running pipewire
+ wireplumber
makes available only one of the card: S3
. There is no mention of PCH
whatsoever, even in the debug logs (e.g. WIREPLUMBER_DEBUG=3
or PIPEWIRE_DEBUG=I
).
Expected: Something like "Failed to open ALSA device PCH: Devise or resource busy" is in the logs somewhere. Alternatively, dmix
input of ALSA gets activated, so Pipewire can co-exist with other ALSA users.