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https://bugs.launchpad.net/bugs/1937980

Title:
  [SRU] the speaker doesn't work on Dell sdw sdca machine with
  kernel-5.13

Status in HWE Next:
  New
Status in alsa-ucm-conf package in Ubuntu:
  Fix Released
Status in alsa-ucm-conf source package in Focal:
  Fix Released
Status in alsa-ucm-conf source package in Hirsute:
  Fix Released
Status in alsa-ucm-conf source package in Impish:
  Fix Released

Bug description:
  [Impact]
  After upgrade the linux kernel to 5.13, the mixer names of rt1316 is changed, 
the current alsa-ucm-conf will fail to initialize that codec, then users can't 
output sound from internal speaker since the internal speaker is routed to the 
codec rt1316.

  [Fix]
  Backport 1 commit (https://github.com/alsa-project/alsa-ucm-conf/pull/109), 
after applying the commit, the ucm conf file doesn't initialize the codec with 
hardcoded mixer names anymore, it will check the existence of the mixer name 
first, then conditionally initialize the codec.

  [Test]
  sudo rm /var/lib/alsa/*; alsactl init; reboot, play the sound from internal 
speaker, the speaker works well.

  [Where problems will occur]
  The change only affects the rt1316 codec, so far, that codec only connects to 
the internal speaker on Dell soundwire sdca audio machine, so it could 
introduce regression on the internal speaker like users can't output sound via 
internal speaker anymore on the Dell soundwire sdca audio machine. But this 
possibility is very low since we already tested the commit on the Dell 
soundwire sdca audio machine. We tested it with old kernel and new kernel, all 
worked well.

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