Troubleshoot for “Sound Not Working” Issue in Ubuntu 22.04
Check the Volume Settings
Check the Connections
Update the Sound Drivers
sudo apt-get update
sudo apt-get upgrade
Once you update the system, reboot it and check if this resolves the error.
Reinstall the Sound Drivers
If you still face the issue, reinstall the sound drivers. First, uninstall the drivers through the following command:
sudo apt-get remove --purge alsa-base pulseaudio
This command removes the current sound drivers. Type the following command to reinstall the drivers:
sudo apt-get install alsa-base pulseaudio