alsa-project/alsa-ucm-conf issue #614 was opened from Prajwal-Prathiksh:

[!IMPORTANT] **I just started getting into Linux, and I'm not even sure if this is the right place to be posting this issue. I'm more than willing to learn or improve if I need to be doing something else or reaching out elsewhere :")**

### System - Manufacturer: LENOVO - Product Name: 83KF - Product Version: Yoga Pro 7 14IAH10 - Firmware Version: QGCN28WW - System SKU: LENOVO_MT_83KF_BU_idea_FM_Yoga Pro 7 14IAH10 - Board Vendor: LENOVO - Board Name: LNVNB161216 - Kernel: 6.16.8-arch1-1 - Packages: - sof-firmware 2025.05.1-1 - alsa-ucm-conf 1.2.14-2 - alsa-utils 1.2.14-1 - Audio stack: PipeWire (Arch Linux)

### Problem - On Windows with Dolby Atmos, laptop speakers produce rich sound with bass. - On Linux (Arch), sound is thin/treble-only. No bass speaker output. - In `alsamixer`, only `Speaker` control is visible. - Codec dump shows: - 0x14: [Fixed] Internal Speaker (plays sound, treble only) - 0x17/0x1b/0x1e: [N/A] Speaker at Ext Rear (do not output audio)

### What I tried - Updated `sof-firmware` + `alsa-ucm-conf`. - Raised mixer levels. - Tested with `hda-verb` to enable 0x17/0x1b as output, set gain, EAPD, and connect to DAC → no sound. - Confirmed with `speaker-test -t sine -f 80`.

### Logs Attaching files - [alsa-info.txt](https://github.com/user-attachments/files/22440886/alsa-info.txt) - [amixer_contents.txt](https://github.com/user-attachments/files/22440883/amixer_contents.txt) - [amixer_simple.txt](https://github.com/user-attachments/files/22440885/amixer_simple.txt) - [codec_dump.txt](https://github.com/user-attachments/files/22440884/codec_dump.txt)

Issue URL : https://github.com/alsa-project/alsa-ucm-conf/issues/614 Repository URL: https://github.com/alsa-project/alsa-ucm-conf