[Bug 2130313] Re: [SRU] cs42l43 and cs35l56 audio failed to work on questing

Bin Li 2130313 at bugs.launchpad.net
Fri Dec 19 11:46:37 UTC 2025


Upload a new one for questing.

https://bugs.launchpad.net/ubuntu/+source/linux-
oem-6.17/+bug/2129952/+attachment/5934741/+files/alsa-ucm-
conf_1.2.12-1ubuntu2.2.debdiff

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Title:
  [SRU] cs42l43 and cs35l56 audio failed to work on questing

Status in OEM Priority Project:
  Triaged
Status in alsa-ucm-conf package in Ubuntu:
  Fix Released
Status in alsa-ucm-conf source package in Questing:
  In Progress

Bug description:
  [Impact]
  No audio input/output for cs42l43 and cs35l56 on Intel LNL of ThinkPad with 25.10.
  The audio works fine on plucky and noble, but could not work on questing/resolute.

  Here is the original issue: enable cs42l43 and cs35l56 audio on Intel LNL
  https://bugs.launchpad.net/ubuntu/+source/alsa-ucm-conf/+bug/2106394

  [Fix]
  Currently the version of alsa-ucm-conf in questing/resolute is still 1.2.12-1ubuntu2, it's older than the plucky one,the below patches are missed in questing.

  With the v1.2.14 this issue could be fixed, we need bump the latest
  version(v1.2.14) for resolute.

  alsa-ucm-conf (1.2.12-1ubuntu1.3) plucky; urgency=medium

    * Fix file mode of amd-soundwire.conf (LP: #2106394)
      amd-soundwire.conf should be a symlink to sof-soundwire.conf

   -- Atlas Yu <atlas.yu at canonical.com>  Thu, 05 Jun 2025 15:12:06 +0800

  alsa-ucm-conf (1.2.12-1ubuntu1.2) plucky; urgency=medium

    * Import patches that have already been applied to noble and oracular,
      but not yet to plucky. This and previous uploads are dependent on
      these patches.
      - d/p/0001-sof-soundwire-Add-missing-match-for-cs42l43-speakers.patch
      - d/p/0002-sof-soundwire-Add-support-for-cs42l43-cs35l56-bridge.patch
      - d/p/0001-sof-soundwire-Change-map-control-names-to-make-them-.patch
      - d/p/0002-sof-soundwire-Add-sequence-for-controlling-Mic-Mute-.patch
      - d/p/0004-rt722-add-mic-led-support.patch

    * Add LED support for cs42l43 and cs35l56 (LP: #2106394)
      Some inapplicable patches were dropped in the previous upload. Now
      we include all its dependencies to make it work.

      Drop:
      - d/p/0001-sof-soundwire-Add-LED-support-for-cs35l56-amplifiers.patch

      Some upstream commits got modified due to contextual changes.
      Add:
      - d/p/0001-sof-soundwire-cs42l43-spk-Correct-PlaybackPCM-and-ro.patch
      - d/p/0002-sof-soundwire-cs42l43-Correct-CapturePCM-and-routing.patch
      - d/p/0003-ucm2-sof-soundwire-Correct-FixedBootSequence-for-dmi.patch
      - d/p/0004-sof-soundwire-Split-cs42l43-dmic-initialisation.patch
      - d/p/0005-sof-soundwire-Fix-cs42l43-dmic-initialisation.patch
      - d/p/0006-common-add-led.conf-with-SetLED-macro-to-hide-implem.patch
      - d/p/0007-ucm2-use-new-SetLED-macro-to-hide-the-implementation.patch
      - d/p/0008-sof-soundwire-cs42l43-Drop-headset-mic-from-mic-mute.patch
      - d/p/0009-sof-soundwire-Add-LED-support-for-cs35l56-amplifiers.patch
      - d/p/0010-sof-soundwire-cs42l43-Switch-mixer-based-on-output-v.patch

  [Test]
  Tested on Intel LNL:
  1, hear the sound from
  $ speaker-test -c 2
  2, make sound and recorded, replay the file:
  $ arecord -f cd test.wav
  $ aplay test.wav
  3, press speaker-mute and mic-mute key, the OSD are shown,
  and the LED is on when it's muted.
  4, plugin headset and restest the steps above for sound input and output.
  sound ctl led is not controlled by headset, it's by design:
  please refer to:
  https://github.com/alsa-project/alsa-ucm-conf/blob/master/ucm2/common/ctl/led.conf

  [Where problems could occur]
  It may break cirrus audio support.

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