> This change proposal is the first I've heard of it. But since this is 
> being proposed by the author of Pipewire, I kind of assume it's good, 
> and I doubt Workstation WG would see the need to get involved unless 
> concerns are raised. Does WirePlumber have some sort of deficiencies 
> compared to pipewire-session-manager?

Now that Fedora 35 is in beta and more people are testing it out, it appears 
that wireplumber does have some regressions compared to pipewire-media-session. 
Namely that audio output switching for flatpak applications does not work [1], 
and that desktop system sound volume (e.g. notification sounds) can not be 
controlled independently from the main system volume [2][3]. There is also an 
issue with changing bluetooth speaker volume [5]. From developer comments it 
may not be likely that all of these problems will be fixed in time for the F35 
release, and the current workaround is to switch back to pipewire-media-session 
[4].

Clearly this is late in the release cycle, but I am concerned that wireplumber 
will provide an overall worse audio experience for F35 users. So ultimately I 
am asking if we should re-evaluate whether or not wireplumber should be the 
default pipewire session manager for F35. Are there other features landing in 
F35 that specifically depend on wireplumber, and if so do they outweigh the 
currently known regressions?

[1] https://gitlab.freedesktop.org/pipewire/wireplumber/-/issues/59
[2] https://gitlab.freedesktop.org/pipewire/wireplumber/-/issues/51
[3] https://bugzilla.redhat.com/show_bug.cgi?id=2003403
[4] https://bugzilla.redhat.com/show_bug.cgi?id=2003403#c4
[5] https://gitlab.freedesktop.org/pipewire/wireplumber/-/issues/58
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