You could try installing snd-hda-tools from https://launchpad.net/~diwic/+archive/ppa , run it with "sudo hda-analyzer", try enabling GPIO's (on the root node) EAPD pins (of all pin nodes) and see if any of that makes any difference or makes a pop noise on the speaker.
Assuming https:/ /wiki.ubuntu. com/Audio/ InstallingLinux AlsaDriverModul es don't work,
You could try installing snd-hda-tools from https:/ /launchpad. net/~diwic/ +archive/ ppa , run it with "sudo hda-analyzer", try enabling GPIO's (on the root node) EAPD pins (of all pin nodes) and see if any of that makes any difference or makes a pop noise on the speaker.