Upgrading to Ubuntu 20.04 fixed the issue.
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https://bugs.launchpad.net/bugs/1884391
Title:
PCI/internal sound card not detected
Status in alsa-driver package in Ubu
Here's what I've tried (that I can remember):
- Reinstalling all the ALSA packages
- Rebooting, turning off the sound devices in the BIOS, letting it boot, then
reboot, turn the sound devices back on, and let it boot
- rm -rf ~/.config/pulseaudio && pulseaudio -k
- sudo alsa force-reload
- Remove
Public bug reported:
My sound card stopped being recognized suddenly today. lspci shows the
card, but alsa and pulseaudio don't see it. I verified that the kernel
modules are installed.
I noticed this today when I logged on and the only audio device was the
dummy device. I tried the various fixes
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