This is probably due to missing gnome-software update https://bugs.launchpad.net/ubuntu/+source/gnome-software/+bug/1688721
please install gnome-software from zesty-proposed; or upgrade these packages using command line. E.g.: $ sudo dpkg --configure -a $ sudo apt full-upgrade ** Changed in: systemd (Ubuntu) Status: Confirmed => New ** Also affects: gnome-software (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1699360 Title: package libpam-systemd:amd64 232-21ubuntu4 failed to install/upgrade: subprocess installed post-installation script returned error exit status 128 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/debconf/+bug/1699360/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs