i did that:
mv /etc/pipewire /tmp
sudo pacman -S pipewire pipewire-pulse pipewire-media-session
ps aux|grep pipewire
1815 0.4 0.0 106236 10008 ? S<Lsl 19:03 0:00 /usr/bin/pipewire-pulse
2023 0.5 0.0 117944 15656 ? S<sl 19:03 0:00 /usr/bin/pipewire
2025 0.1 0.0 90116 10720 ? S<sl 19:03 0:00 /usr/bin/pipewire-media-session
kill -9 1815 2023 2025
Audio become up again, even after a reboot