Reinstall doesn't help. The problematic line is in postinst:
[ -x /bin/systemctl ] && [ -d /run/systemd/system ] && systemctl enable pcscd.socket On my Trusty system, even calling this command from commandline (with sudo at systemctl) fails with the same error. Using strace I found out that on this system it looks for the socket file in /lib/systemd/upstart/pcscd.socket, but the package only installs /lib/systemd/system/pcscd.socket. Manually copying this file to the correct directory fixes the issue (symlink is not enough since systemd doesn't follow them). It's probably caused by this systemd change from December 2016: https://bugs.launchpad.net/ubuntu/trusty/+source/systemd/+bug/1616422/comments/21 . That would explain why I succeeded installing pcscd on trusty a few years ago, but now it's broken. It could be fixed in debian/rules: override_dh_auto_configure: dh_auto_configure -- $(EXTRA_CONFIGURE_ARGS) --with-systemdsystemunitdir=/lib/systemd/system --enable-usbdropdir=/usr/lib/pcsc/drivers $(shell dpkg-buildflags --export=configure) There's a config named --with-systemdsystemunitdir which points to the ignored directory on trusty. Pointing it to /lib/systemd/upstart should IMO fix the bug. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to pcsc-lite in Ubuntu. https://bugs.launchpad.net/bugs/1700104 Title: package pcscd 1.8.10-1ubuntu1.1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1 Status in pcsc-lite package in Ubuntu: Confirmed Bug description: . ProblemType: Package DistroRelease: Ubuntu 14.04 Package: pcscd 1.8.10-1ubuntu1.1 ProcVersionSignature: Ubuntu 4.4.0-81.104~14.04.1-generic 4.4.67 Uname: Linux 4.4.0-81-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.24 AptOrdering: pcscd: Install pcscd: Configure Architecture: amd64 Date: Fri Jun 23 12:21:31 2017 DuplicateSignature: package:pcscd:1.8.10-1ubuntu1.1:subprocess installed post-installation script returned error exit status 1 ErrorMessage: subprocess installed post-installation script returned error exit status 1 InstallationDate: Installed on 2016-12-28 (177 days ago) InstallationMedia: Ubuntu 14.04.5 LTS "Trusty Tahr" - Release amd64 (20160803) RelatedPackageVersions: dpkg 1.17.5ubuntu5.7 apt 1.0.1ubuntu2.17 SourcePackage: pcsc-lite Title: package pcscd 1.8.10-1ubuntu1.1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1 UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pcsc-lite/+bug/1700104/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
