Public bug reported: I upgraded from 14.04 to 16.04 and this error comes up.
ProblemType: Package DistroRelease: Ubuntu 16.04 Package: libpam-cap:amd64 1:2.24-0ubuntu2 ProcVersionSignature: Ubuntu 4.4.0-186.216-generic 4.4.228 Uname: Linux 4.4.0-186-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.23 AptdaemonVersion: 1.1.1+bzr982-0ubuntu14.3 Architecture: amd64 Date: Mon Aug 3 15:48:16 2020 DuplicateSignature: package:libpam-cap:amd64:1:2.24-0ubuntu2 Setting up libp11-kit-gnome-keyring:amd64 (3.18.3-0ubuntu2.1) ... dpkg: error processing package libpam-cap:amd64 (--configure): package libpam-cap:amd64 is already installed and configured ErrorMessage: package libpam-cap:amd64 is already installed and configured InstallationDate: Installed on 2020-08-03 (0 days ago) InstallationMedia: Ubuntu 14.04.6 LTS "Trusty Tahr" - Release amd64 (20190304.5) RelatedPackageVersions: dpkg 1.18.4ubuntu1.6 apt 1.2.32ubuntu0.1 SourcePackage: dpkg Title: package libpam-cap:amd64 1:2.24-0ubuntu2 failed to install/upgrade: package libpam-cap:amd64 is already installed and configured UpgradeStatus: Upgraded to xenial on 2020-08-03 (0 days ago) ** Affects: dpkg (Ubuntu) Importance: Undecided Status: New ** Tags: already-installed amd64 apport-package xenial -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1890196 Title: package libpam-cap:amd64 1:2.24-0ubuntu2 failed to install/upgrade: package libpam-cap:amd64 is already installed and configured To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/dpkg/+bug/1890196/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs