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alsa>Perex at 16:04, 8 January 2026

2026-01-08T16:04:46Z

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{| align="right"
| __TOC__
|}
=Detailed changelog between 1.2.15.1 and 1.2.15.2 releases=
=Changelog between 1.2.15.1 and 1.2.15.2 releases=
==alsa-lib==
===Core===
- Release v1.2.15.2
===Use Case Manager API===
- ucm: add some traces for the config filenames
<code>
It is handy to see the path names in the loading chain.</code>
===/Makefile.am===
- Makefile: remove dist-hook and remove tar option 'follow symlinks'
<code>
The dist-hook is not required for latest automake. It was
introduced in 2000, so the things were hopefully fixed now.</code>
===Error handler===
- error: fix the "return old snd_lib_error_set_handler() behaviour"
<code>
The variable arguments must be handled differently. Add a conversion
routine which use the original argument call convention.</code>
- error: fix indendation in snd_lib_log_filter()
- error: return old snd_lib_error_set_handler() behaviour
<code>
Unfortunately, the case when the old application sets
own error callback using the old method, was not handled
properly in snd_lib_vlog_default() function.

Make sure that only error messages are passed to this
old callback and silent other log priorities.

Link: https://bugs.gentoo.org/968131</code>
==alsa-utils==
===Core===
- Release v1.2.15.2
===ALSA Control (alsactl)===
- alsactl: fix sequence to clean card specific config files for UCM
<code>
For UCM, card-specific config files should be removed only when the fixed
boot flag is set or if the card is not the primary card in a given card
group.</code>
- alsactl: add missing call to clean card specific config files
<code>
The card specific configuration files created at runtime must
be removed before UCM fixed boot sequence in the standard
restore operation.</code>
===alsaloop===
- alsaloop: only log xrun debug messages when verbose
<code>
Xruns can happen quite often (E.G. continuously when using alsaloop to/from
the UAC gadget driver without a connected host), so only log the debug
messages when verbose logging has been requested to not flood the logs.

Closes: https://github.com/alsa-project/alsa-utils/pull/302</code>
===aplay/arecord===
- aplay: add support for G.711 A_LAW enconding in AU file format
<code>
At the time being, aplay only supports G.711 µ-law, 8-bits PCM and
16-bits PCM encodings for the AU format while the AU format supports
many more.

In Europe the most G.711 used encoding is the A-law, which is also
part of the encodings supported by the AU file format.

Add support for that encoding in aplay.

Closes: https://github.com/alsa-project/alsa-utils/pull/297</code>
==alsa-ucm-conf==
===Configuration===
- common: remove direct.conf and direct-verb.conf files
<code>
The DirectUseCase macro (directm.conf) is the replacement.</code>
- USB-Audio: update to use new DirectUseCase macro
- common: introduce DirectUseCase macro
<code>
The goal is to replace the common/direct.conf with this more
universal macro.</code>
- USB-Audio: Scarlett 18i20 gen4 - improve channel detection
<code>
Use bcdDevice number (using sysfs) to detect the right
channel count. Information is taken from the pull request
comments bellow.

Link: https://github.com/alsa-project/alsa-ucm-conf/pull/660</code>
- USB-Audio: Add conditional channel count on Scarlett 18i20 version
<code>
Link: https://github.com/alsa-project/alsa-ucm-conf/pull/660</code>
- USB-Audio: Steinberg UR22C - fix regex
<code>
There was thinko - right "any character" match is '.' not '?'.

Link: https://github.com/alsa-project/alsa-ucm-conf/issues/547</code>
- ucm2: HDA: Create microphone devices optionally
<code>
Check if 'Capture Switch' is present before HiFi-mic.conf file
is included.

Link: https://github.com/alsa-project/alsa-ucm-conf/issues/673</code>
- ucm2: HDA: Headphone output may be optional
<code>
Check for 'Headphone Playback Volume' or 'Headphone+LO Playback Volume'
controls. If they not present, don't create 'Headphone' UCM device.

Link: https://github.com/alsa-project/alsa-ucm-conf/issues/673</code>
- ucm2: sof-soundwire: cs42l45: Remove outdated DisableSequence elements
<code>
cs42l45 configs has DisableSequences elements copied over from cs42l43
configuration that are no longer needed, delete them.

Closes: https://github.com/alsa-project/alsa-ucm-conf/pull/671</code>
- ucm2: sof-soundwire: cs42l43: Remove outdated DisableSequence elements
<code>
cs42l43's 'Headset Microphone' and 'Microphone' devices were both used
to control mic mute LED in the past, but this was changed [1] to only
allow the built-in microphones to control the LED. Thus clean up the
DisableSequences to remove the switching off that is no longer needed.

[1]: https://github.com/alsa-project/alsa-ucm-conf/blob/master/ucm2/common/ctl/led.conf

Closes: https://github.com/alsa-project/alsa-ucm-conf/pull/671</code>
===Description===
- Release v1.2.15.2

Detailed changes v1.2.15.1 v1.2.15.2 - Revision history

Perex: 1 revision imported

alsa>Perex at 16:04, 8 January 2026