Thank you for taking the time to report this bug and helping to make Ubuntu better. Reviewing your dmesg attachment in this bug report it seems that there is a problem with your hardware. I recommend performing a back up and then investigating the situation. Measures you might take include checking cable connections and using software tools to investigate the health of your hardware. In the event that is is not in fact an error with your hardware please set the bug's status back to New. Thanks and good luck!
[This is an automated message. I apologize if it reached you inappropriately; please just reply to this message indicating so.] ** Tags added: hardware-error ** Changed in: systemd (Ubuntu) Importance: Undecided => Low ** Changed in: systemd (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1758307 Title: package libpam-systemd:amd64 229-4ubuntu21.2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 128 Status in systemd package in Ubuntu: Invalid Bug description: On: Description: Ubuntu 16.04.4 LTS Release: 16.04 ProblemType: Package DistroRelease: Ubuntu 16.04 Package: libpam-systemd:amd64 229-4ubuntu21.2 ProcVersionSignature: Ubuntu 4.13.0-37.42~16.04.1-generic 4.13.13 Uname: Linux 4.13.0-37-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.15 Architecture: amd64 Date: Fri Mar 23 06:20:55 2018 ErrorMessage: subprocess installed post-installation script returned error exit status 128 InstallationDate: Installed on 2018-03-15 (8 days ago) InstallationMedia: Ubuntu 16.04.4 LTS "Xenial Xerus" - Release amd64 (20180228) RelatedPackageVersions: dpkg 1.18.4ubuntu1.4 apt 1.2.26 SourcePackage: systemd Title: package libpam-systemd:amd64 229-4ubuntu21.2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 128 UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1758307/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp