From: GitHub issues - opened <github@alsa-project.org>
To: alsa-devel@alsa-project.org
Subject: Lenovo 83KF with Realtek ALC287 – bass speaker not exposed (only treble on Linux, Dolby works on Windows)
Date: Sat, 20 Sep 2025 15:24:21 +0200 (CEST) [thread overview]
Message-ID: <1867006f828fcb00-webhooks-bot@alsa-project.org> (raw)
In-Reply-To: <1867006f80174400-webhooks-bot@alsa-project.org>
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
next parent reply other threads:[~2025-09-20 13:25 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1867006f80174400-webhooks-bot@alsa-project.org>
2025-09-20 13:24 ` GitHub issues - opened [this message]
[not found] <18670079ba795500-webhooks-bot@alsa-project.org>
2025-09-20 13:25 ` Lenovo 83KF with Realtek ALC287 – bass speaker not exposed (only treble on Linux, Dolby works on Windows) GitHub issues - edited
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