I reproduced the bug, and this is a alsa-lib's issue, and the latest alsa-lib already has the fix. Let me test it and backport it to groovy and maybe focal.
** Package changed: linux (Ubuntu) => alsa-lib (Ubuntu) ** No longer affects: pulseaudio (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1897934 Title: [Intel HDA] The initial sound level is set to zero (muted) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-release-notes/+bug/1897934/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
