Lenovo Yoga Pro 7 built-in speakers volume not controlled by GNOME/PipeWire

[GitHub issues - edited <github@alsa-project.org>]

alsa-project/alsa-ucm-conf issue #642 was edited from 2O77:

Device: Lenovo Yoga Pro 14 14IMH9
Sound card: sof-hda-dsp
Problem: ALSA Post-Mixer / Pre-Mixer controls work via alsamixer, but GNOME volume slider or PipeWire sink volume does not affect hardware output. Likely an issue in the UCM profile for this device.

Steps to reproduce:
1. Boot any Linux distribution.
2. Attempt to change volume via GNOME/KDE slider or `pactl` / PipeWire controls.
3. Observe that output volume of laptop speakers does not change.
4. Testing with headphones (AirPods, Beats) or external speakers works correctly.

Notes:
- This issue is specific to the built-in laptop speakers.
- Different desktop environments (GNOME, KDE) and distributions (Fedora GNOME, Fedora KDE, openSUSE Tumbleweed) were tested and exhibit the same problem.
- ALSA `Post-Mixer` / `Pre-Mixer` controls work correctly when adjusted via `alsamixer`.

Expected behavior:
- GNOME / PipeWire slider should affect the actual hardware output volume of the laptop speakers.

Suggested area:
- UCM profile for sof-hda-dsp on this Lenovo model may need adjustment.

Issue URL     : https://github.com/alsa-project/alsa-ucm-conf/issues/642
Repository URL: https://github.com/alsa-project/alsa-ucm-conf