Unable to unmask pipewire-pulse.socket

[Marcelo Laia]

I followed the instructions here [1] and [2] to install pipewire audio 
support.

However, it's unable to unmask pipewire-pulse.socket.
I tried:

:~$ systemctl --user --now enable pipewire{,-pulse}.{socket,service} 
filter-chain.service
Failed to enable unit: Unit file /etc/xdg/systemd/user/pipewire-pulse.socket is 
masked.

:~$ systemctl --user --now enable pipewire pipewire-pulse
Failed to enable unit: Unit file /etc/xdg/systemd/user/pipewire-pulse.service 
is masked.

If I run:

:~$ systemctl --user unmask pipewire.service

nothing is output

More info

:~$ sudo apt policy pipewire pipewire-audio-client-libraries
[sudo] senha para :
pipewire:
  Instalado: 0.3.58-2
  Candidato: 0.3.58-2
  Tabela de versão:
 *** 0.3.58-2 990
        990 http://deb.debian.org/debian testing/main amd64 Packages
         49 http://deb.debian.org/debian unstable/main amd64 Packages
        100 /var/lib/dpkg/status
     0.3.19-4 100
        100 http://deb.debian.org/debian stable/main amd64 Packages
pipewire-audio-client-libraries:
  Instalado: 0.3.58-2
  Candidato: 0.3.58-2
  Tabela de versão:
 *** 0.3.58-2 990
        990 http://deb.debian.org/debian testing/main amd64 Packages
         49 http://deb.debian.org/debian unstable/main amd64 Packages
        100 /var/lib/dpkg/status
     0.3.19-4 100
        100 http://deb.debian.org/debian stable/main amd64 Packages

:~$ ls /etc/pipewire/media-session.d/
with-pulseaudio

:~$ ls /etc/systemd/user/pipewire-pulse.s*
/etc/systemd/user/pipewire-pulse.service  
/etc/systemd/user/pipewire-pulse.socket

:~$ systemctl --user daemon-reload
:~$

:~$ systemctl --user --now disable pulseaudio.service pulseaudio.socket
Unit /home/marcelo/.config/systemd/user/pulseaudio.service is masked, ignoring.

:~$ systemctl --user --now enable pipewire pipewire-pulse
Failed to enable unit: Unit file /etc/xdg/systemd/user/pipewire-pulse.service 
is masked.

After here, I'm unable to unmask it.

:~$ pactl info
Falha na conexão: Conexão recusada
pa_context_new() falhou: Conexão recusada

Have you any advices?

Thank you so much!

--
Marcelo