Public bug reported:
My output sound device "Lenovo Family 17h" worked well in Ubuntu 20.04.
device: IdeaPad-5-14ARE05
Since shortly it stopped working and only showed: "System => Sound => Output
Device" - "Dummy Output".
Checked it with different kernels and it is not kernel related
problem since upgrade of libasound, so we set back to older version
cat /prod/asound/cards
0 [Generic ]: HDA-Intel - HD-Audio Generic
HD-Audio Generic at 0xd04c8000 irq 90
1 [Generic_1 ]: HDA-Intel - HD-Audio Generic
HD-Audio Generic at 0xd04c0000 irq 91
2 [acp ]: acp - acp
LENOVO-81YM-IdeaPad514ARE05-LNVNB161216
we figured it to be no pulse problem but with alsa
solution:
sudo apt install libasound2=1.2.2-2.1 libasound2-data=1.2.2-2.1
libasound2:i386=1.2.2-2.1 libatopology2=1.2.2-2.1
to prevent from upgrades again:
echo libasound2 hold | sudo dpkg --set-selections
** Affects: alsa-lib (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1905132
Title:
no audio output dummy only
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