** Changed in: alsa-ucm-conf (Ubuntu Hirsute)
Status: In Progress => Fix Committed
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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 Committed
Status in alsa-ucm-conf source package in Focal:
In Progress
Status in alsa-ucm-conf source package in Hirsute:
Fix Committed
Status in alsa-ucm-conf source package in Impish:
Fix Committed
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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