This bug was fixed in the package pulseaudio - 1:13.99.1-1ubuntu3.12
---------------
pulseaudio (1:13.99.1-1ubuntu3.12) focal; urgency=medium
* d/p/0001-alsa-sink-source-set-volume-to-hw-immediately-if-ucm.patch
Fix the output volume issue for machines with sof audio driver, if
a machine uses sof audio driver, the headphone and speaker will share
the output volume from UI, this patch will fix this issue, after
applying this patch, the speaker and headphone will have independent
volume. (LP: #1930188)
-- Hui Wang <[email protected]> Mon, 13 Sep 2021 12:11:14 +0800
** Changed in: pulseaudio (Ubuntu Focal)
Status: Fix Committed => Fix Released
** Changed in: alsa-ucm-conf (Ubuntu Focal)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1930188
Title:
Acer Aspire 5 sound driver issues
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