If it helps I was trying to install vagrant when this happened. Output (of a second attempt) below: $ sudo apt install vagrant Reading package lists... Done Building dependency tree Reading state information... Done vagrant is already the newest version (2.0.2+dfsg-2ubuntu2). 0 to upgrade, 0 to newly install, 0 to remove and 5 not to upgrade. 7 not fully installed or removed. After this operation, 0 B of additional disk space will be used. Do you want to continue? [Y/n] Setting up lvm2 (2.02.176-4.1ubuntu2) ... update-initramfs: deferring update (trigger activated) Failed to restart lvm2-lvmetad.service: Unit lvm2-lvmetad.socket is masked. invoke-rc.d: initscript lvm2-lvmetad, action "restart" failed. ● lvm2-lvmetad.service - LVM2 metadata daemon Loaded: loaded (/lib/systemd/system/lvm2-lvmetad.service; static; vendor preset: enabled) Active: inactive (dead) Docs: man:lvmetad(8) Mar 09 16:06:24 ynap-techub systemd[1]: Started LVM2 metadata daemon. Mar 09 16:36:08 ynap-techub systemd[1]: Stopping LVM2 metadata daemon... Mar 09 16:36:08 ynap-techub systemd[1]: Stopped LVM2 metadata daemon. dpkg: error processing package lvm2 (--configure): installed lvm2 package post-installation script subprocess returned error exit status 1 dpkg: dependency problems prevent configuration of libguestfs0:amd64: libguestfs0:amd64 depends on lvm2; however: Package lvm2 is not configured yet. dpkg: error processing package libguestfs0:amd64 (--configure): dependency problems - leaving unconfigured No apport report written because the error message indicates it's a follow-up error from a previous failure. dpkg: dependency problems prevent configuration of libguestfs-reiserfs:amd64: libguestfs-reiserfs:amd64 depends on libguestfs0 (= 1:1.36.13-1ubuntu3); however: Package libguestfs0:amd64 is not configured yet. dpkg: error processing package libguestfs-reiserfs:amd64 (--configure): dependency problems - leaving unconfigured No apport report written because the error message indicates it's a follow-up error from a previous failure. dpkg: dependency problems prevent configuration of libguestfs-perl: libguestfs-perl depends on libguestfs0 (= 1:1.36.13-1ubuntu3); however: Package libguestfs0:amd64 is not configured yet. dpkg: error processing package libguestfs-perl (--configure): dependency problems - leaving unconfigured No apport report written because MaxReports has already been reached dpkg: dependency problems prevent configuration of libguestfs-hfsplus:amd64: libguestfs-hfsplus:amd64 depends on libguestfs0 (= 1:1.36.13-1ubuntu3); however: Package libguestfs0:amd64 is not configured yet. dpkg: error processing package libguestfs-hfsplus:amd64 (--configure): dependency problems - leaving unconfigured No apport report written because MaxReports has already been reached dpkg: dependency problems prevent configuration of libguestfs-tools: libguestfs-tools depends on libguestfs0 (= 1:1.36.13-1ubuntu3); however: Package libguestfs0:amd64 is not configured yet. libguestfs-tools depends on libguestfs-perl (= 1:1.36.13-1ubuntu3); however: Package libguestfs-perl is not configured yet. dpkg: error processing package libguestfs-tools (--configure): dependency problems - leaving unconfigured No apport report written because MaxReports has already been reached dpkg: dependency problems prevent configuration of libguestfs-xfs:amd64: libguestfs-xfs:amd64 depends on libguestfs0 (= 1:1.36.13-1ubuntu3); however: Package libguestfs0:amd64 is not configured yet. dpkg: error processing package libguestfs-xfs:amd64 (--configure): dependency problems - leaving unconfigured No apport report written because MaxReports has already been reached Processing triggers for initramfs-tools (0.130ubuntu3) ... update-initramfs: Generating /boot/initrd.img-4.15.0-10-generic Errors were encountered while processing: lvm2 libguestfs0:amd64 libguestfs-reiserfs:amd64 libguestfs-perl libguestfs-hfsplus:amd64 libguestfs-tools libguestfs-xfs:amd64 E: Sub-process /usr/bin/dpkg returned an error code (1)