This bug was fixed in the package alsa-lib - 1.2.2-2.1ubuntu2.2
---------------
alsa-lib (1.2.2-2.1ubuntu2.2) focal; urgency=medium
* d/p/0001-ucm-handle-correctly-Linked-configuration.patch
- If the sound card is Linked in the ucm, don't return error
in the check_empty_configuration(). So far the AMD Ryzen
machines with acp sound card need this fix, otherwise the
pulseaudio will fail to load ucm on those machines and the whole
audio can't work. (LP: #1901922)
-- Hui Wang <hui.w...@canonical.com> Mon, 09 Nov 2020 14:53:11 +0800
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https://bugs.launchpad.net/bugs/1901922
Title:
[SRU][Lenovo ThinkPad T14 Gen 1] No sound output device on startup
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