You have been subscribed to a public bug:
Since upgrading to 20.04 the sound card is no longer detected.
This means that I can only see "Dummy Output" in the sound settings.
The audio works if I use Bluetooth headphones but not if I try to use
the speakers or the 3.5mm headphone jack.
My machine is a Lenovo ThinkPad X1 Yoga (4th gen).
** Affects: alsa-driver (Ubuntu)
Importance: Undecided
Status: New
** Tags: champagne focal
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audio card not detected after upgrade to 20.04 (Only Dummy Output appears)
https://bugs.launchpad.net/bugs/1866890
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seeded packages, which is subscribed to alsa-driver in Ubuntu.
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