This is related to linux-image-4.15.0-177-generic, but I cannot find that package as an option.
** Package changed: alsa-driver (Ubuntu) => ubuntu -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to alsa-driver in Ubuntu. https://bugs.launchpad.net/bugs/1976160 Title: Sound card not detected (Dummy Output) after update to kernel 4.15.0-177-generic or 4.15.0.180-generic Status in Ubuntu: New Bug description: Regular update including new kernel images. After reboot, sound was not working and only the dummy output is shown. Description: Ubuntu 18.04.6 LTS Release: 18.04 Package: linux-image-4.15.0-177-generic (also happens with 180-generic Expected: Sound to work, mic to work, sound card recognised in settings. What happened instead: Dummy sound only available card, sound does not work, mic does not work Tried: Restarting pulse audio, grepping lsmod for a sound card (nothing listed) Workaround: Everything works fine if I boot into 4.15.0-176-generic To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1976160/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp