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 Desktop Packages, which is subscribed to pulseaudio in Ubuntu. https://bugs.launchpad.net/bugs/2048398 Title: Unable to change audio volume for the speakers Status in pulseaudio package in Ubuntu: New Bug description: Hi everyone, from a fresh install of Ubuntu 23.04, I cannot change the audio volume for the speakers. Formally, the audio is either at minimum (lowest part of the volume control bar) or at maximum (every other part of the audio control bar). I can mute the speakers. However, audio works perfectly for headphones. The Bluetooth pairing is instant, and I can change the volume. HW information for the audio device is the following: Audio: Device-1: Intel vendor: Lenovo driver: sof-audio-pci-intel-tgl bus-ID: 00:1f.3 Sound API: ALSA v: k6.2.0-39-generic running: yes Sound Server-1: PulseAudio v: 16.1 running: no Sound Server-2: PipeWire v: 0.3.65 running: yes Other info: System: Kernel: 6.2.0-39-generic arch: x86_64 bits: 64 compiler: N/A Desktop: GNOME v: 44.3 Distro: Ubuntu 23.04 (Lunar Lobster) Machine: Type: Laptop System: LENOVO product: 82Y7 v: Yoga Pro 7 14IRH8 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/2048398/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
