Explanation : The bug is found in debian/trouser.postinst at line :19[1]. It tries to perform a "pidof udevd" on a machine where it is "systemd-udevd".
Because "pidof udevd" return nothing, than the if statement fails. As mentioned, above by Edmond, changing the from "pidof udevd" to "pidof systemd-udevd" works... but I think the best approach is what is found on Wily/Xenial and Debian upstream which is to use "udevadm --version"[2] instead. [1] # ask udev to check for new udev rules (and fix device permissions) ==> if [ -x /etc/init.d/udev ] && pidof udevd > /dev/null; then udevadm control --reload-rules udevadm trigger --sysname-match="tpm[0-9]*" fi ;; [2] # ask udev to check for new udev rules (and fix device permissions) ==> if [ -e /dev/tpm0 ] && udevadm --version > /dev/null; then udevadm control --reload-rules ||: udevadm trigger --sysname-match="tpm[0-9]*" ||: fi ;; Eric -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1484740 Title: 14.04 trousers version 0.3.11.2-1 fails to start with TPM device To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/trousers/+bug/1484740/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs