From: GitHub pull_request - opened <github@alsa-project.org>
To: alsa-devel@alsa-project.org
Subject: HDA: HiFi-spk: define 4-channel speaker layout when Bass Speaker is present
Date: Mon, 24 Aug 2026 20:51:15 +0200 (CEST) [thread overview]
Message-ID: <18ced26e122ddd00-webhooks-bot@alsa-project.org> (raw)
In-Reply-To: <alsa-project/alsa-ucm-conf/pr/838@alsa-project.org>
alsa-project/alsa-ucm-conf pull request #838 was opened from melcheikh:
### Summary
Systems with secondary smart amplifiers (such as Lenovo Legion Pro 7i Gen 10 `16IAX10H`, Legion 5i, and various Yoga models with AW88399 / CS35L41 amplifiers) expose a `Bass Speaker Playback Switch` control in ALSA.
This PR adds an `If.bass` condition to `ucm2/HDA/HiFi-spk.conf` so that when `Bass Speaker Playback Switch` is present, ALSA UCM defines `PlaybackChannels 4` and channel positions (`FL`, `FR`, `RL`, `RR`).
### Benefits
- Automatically routes audio across all 4 speakers (tweeters + woofers) in modern sound servers (PipeWire / PulseAudio).
- Eliminates the need for hardcoded machine-by-machine overrides for 4-speaker HDA setups.
- Tested on Lenovo Legion Pro 7i Gen 10 (DMI Product `83F5`).
Signed-off-by: Martin el Cheikh <martinelcheikh@gmail.com>
Request URL : https://github.com/alsa-project/alsa-ucm-conf/pull/838
Patch URL : https://github.com/alsa-project/alsa-ucm-conf/pull/838.patch
Repository URL: https://github.com/alsa-project/alsa-ucm-conf
parent reply other threads:[~2026-08-24 18:52 UTC|newest]
Thread overview: expand[flat|nested] mbox.gz Atom feed
[parent not found: <alsa-project/alsa-ucm-conf/pr/838@alsa-project.org>]
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