Acer Aspire Go 16 (Conexant CX11970): Line Output has higher priority than Speaker causing wrong auto-switch after unplugging headphones

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

alsa-project/alsa-ucm-conf issue #813 was opened from freewilly55a-boop:

## Hardware

Notebook: Acer Aspire Go 16 AG16-71P

Audio controller:
Intel Raptor Lake-P/U/H cAVS (SOF)

Codec:
Conexant CX11970

Distribution:
Debian 13 (Trixie)

alsa-ucm-conf:
1.2.14-1

PipeWire:
1.4.2

WirePlumber:
0.5.8


## Problem

The headphone jack detection works correctly.

When headphones are plugged in, the active sink becomes "Headphones".

After unplugging the headphones, the active sink becomes "Line Output" instead of "Speaker".

As a result, the internal speakers remain silent although no headphones are connected.


## Investigation

The problem is caused by the priorities in

/usr/share/alsa/ucm2/HDA/HiFi-analog.conf

Current values:

Line Output:
PlaybackPriority 300

Headphones:
PlaybackPriority 200

Speaker:
PlaybackPriority 100


## Test

Changing

PlaybackPriority 300

to

PlaybackPriority 50

immediately fixes the problem.

After restarting PipeWire:

Headphones plugged:
→ Headphones selected automatically.

Headphones unplugged:
→ Speaker selected automatically.

Automatic switching works perfectly afterwards.


## Suggestion

Please consider lowering the Line Output priority (or disabling Line Output) for notebooks using this SOF + Conexant CX11970 configuration.

If required, I can provide additional information or test patches.

Issue URL     : https://github.com/alsa-project/alsa-ucm-conf/issues/813
Repository URL: https://github.com/alsa-project/alsa-ucm-conf