@Matt: I meant restart after reinstall! And it didn’t help!
Ah, gotcha. Appreciate the clarification.
If reinstalling ALSA and Pulseaudio:
sudo apt install --reinstall alsa-base alsa-utils linux-sound-base libasound2
and
sudo apt install --reinstall libpulse0 libpulsedsp pulseaudio pulseaudio-module-bluetooth pulseaudio-utils
Both fail after running both commands and rebooting, now we try some more drastic steps.
If the steps above fail (and please verify that both were tried):
Backup your alsa-base.conf:
sudo cp /etc/modprobe.d/alsa-base.conf /etc/modprobe.d/alsa-base.bak
We’re going to now make some changes (this again assumes Ubuntu 22.04 is still the distro in question):
sudo echo "options snd-hda-intel model=generic" | sudo tee -a /etc/modprobe.d/alsa-base.conf
Reboot. If it’s still a dummy output, try:
model=auto instead of generic
If none of those work, try
options snd-hda-intel index=1
If it doesn’t work, restore by reversing the bk file, then reboot.
sudo cp /etc/modprobe.d/alsa-base.bak /etc/modprobe.d/alsa-base.conf
Ideally, trying one last time of reinstalling Pulseaudio and ALSA both are the better solution, but the new steps provided can also sometimes work.
The differences between model=auto, generic, snd-hda-intel really depends on what ALSA is looking for.
On my Framework, I have fully patched, un-tweaked Ubuntu 22.04 installed and have found that reinstalling ALSA usually fixes dummy audio.
Marking as solved as the above steps will solve the described issue.