Looks like the same issue I'm having on Thinkpad X1 Carbon 7th Gen running Ubuntu 19.04.
Debug output here: http://alsa-project.org/db/?f=5c09dfb7b0fc0ff5ad32c0576893316f5613d3a1 As well as the Mic not being detected, and therefore not available for use in any applications, there is an issue with the master audio volume being either full-on or muted. individual mixer controls still work, but the main volume control does nothing other than mute the audio. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1837821 Title: [HP Spectre x360 Convertible 15-df0xxx, Realtek ALC285, Black Mic, Left] Recording problem To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1837821/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs