Found a solution here (https://askubuntu.com/a/1487587/920914), which I report for self-containment:
Current workaround is by configuring ["api.alsa.soft-mixer"] = true in /usr/share/wireplumber/main.lua.d/50-alsa-config.lua then, systemctl --user restart wireplumber.service -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2048398 Title: Unable to change audio volume for the speakers To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/2048398/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
