Hi, I have the same laptop - HP EliteBook x360 1040 G5, and the same problem.
No build-in microphone. I don't know what about JACK microphone, I will test it later. My alsainfo: http://alsa-project.org/db/?f=212a7321c9d14bbe1693eda416399b8f0c9dcd2b Attached my codec graph from codecgraph. ** Attachment added: "codec#0.svg" https://bugs.launchpad.net/ubuntu/+source/linux-signed-hwe/+bug/1841108/+attachment/5761249/+files/codec%230.svg -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-signed-hwe in Ubuntu. https://bugs.launchpad.net/bugs/1841108 Title: Internal Microphone not working on HP EliteBook x360 1040 G5 Status in linux-signed-hwe package in Ubuntu: Confirmed Bug description: What you expected to happen: The internal microphone is available as an input source. What happened instead: The internal microphone is not detected at all and does not appear in the list of available inputs. I tried using hdajackretask to mark other input pins as microphones results in inputs that do nothing, i.e. no sound is detected. I double checked that they were not muted. The codec is Conexant Generic. Description: Ubuntu 18.04.3 LTS Release: 18.04 ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: linux-image-5.0.0-25-generic 5.0.0-25.26~18.04.1 ProcVersionSignature: Ubuntu 5.0.0-25.26~18.04.1-generic 5.0.18 Uname: Linux 5.0.0-25-generic x86_64 ApportVersion: 2.20.9-0ubuntu7.7 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Thu Aug 22 16:57:32 2019 InstallationDate: Installed on 2019-07-23 (30 days ago) InstallationMedia: Ubuntu 18.04.2 LTS "Bionic Beaver" - Release amd64 (20190210) SourcePackage: linux-signed-hwe UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-signed-hwe/+bug/1841108/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp