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Leonardo Costa 51f7d780da ucm2: Toradex: apalis-imx8: Set default values for input and output devices 
Add EnableSequence/DisableSequence entries for the Mic input device. Align
BootSequence with other Toradex NXP module configurations. Remove Lineout
from the BootSequence, as the codec Lineout output pin is not connected on
the Apalis iMX8.

Previously uninitialized configurations were set unpredictably at boot, causing
high-noise input/output behavior. Set these configs explicitly to ensure the
sound card starts in a known working state.

Closes: https://github.com/alsa-project/alsa-ucm-conf/pull/761
Signed-off-by: Leonardo Costa <leonardo.costa@toradex.com>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2026-05-27 13:08:33 +02:00
.github/workflows github: workflow: fix paths for the last change 2026-04-16 15:34:38 +02:00
ucm chtrt5645: adapt to ucm2 2019-11-21 14:57:59 +01:00
ucm2 ucm2: Toradex: apalis-imx8: Set default values for input and output devices 2026-05-27 13:08:33 +02:00
.gitignore Add .gitignore to skip backup files 2019-09-27 10:32:27 +02:00
LICENSE Initial commit 2019-07-31 19:38:52 +02:00
README.md README: document the ALSA state file clearing 2024-06-19 09:05:39 +02:00
VERSION Release v1.2.15.3 2026-01-13 08:12:41 +01:00

README.md

alsa-ucm-conf

ALSA Use Case Manager configuration

Installation

Copy the ucm and ucm2 trees to the alsa-lib configuration directory (usually located in /usr/share/alsa) including symlinks. The files in the package root directory (README.md, LICENSE and VERSION) files are extra (only informational).

Example:

tar xvjf alsa-ucm-conf-1.2.6.2.tar.bz2 -C /usr/share/alsa --strip-components=1 --wildcards "*/ucm" "*/ucm2"

The latest configuration can be obtained with those commands:

curl -L -o alsa-ucm-conf.tar.gz https://github.com/alsa-project/alsa-ucm-conf/archive/refs/heads/master.tar.gz
tar xvzf alsa-ucm-conf.tar.gz -C /usr/share/alsa --strip-components=1 --wildcards "*/ucm" "*/ucm2"

State file

Some values may be set only one time by UCM and then they are saved to the global ALSA sound state file. Please, make sure that this state is cleared, if you have an issue.

Commands for standard systemd setup (relogin is required):

systemctl stop alsa-state
rm /var/lib/alsa/asound.state
systemctl start alsa-state

Validation

Validate UCM configuration

The UCM configurations are automatically validated using the UCM validator available at https://github.com/alsa-project/alsa-tests/tree/master/python/ucm-validator .

If you create a pull request for new hardware, please, add also the alsa-info.sh output to emulate this hardware in the UCM validator.