IMO this is fixed in latest unattended-upgrades version available via -updates.
** Changed in: unattended-upgrades (Ubuntu) Status: New => Fix Released -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to unattended-upgrades in Ubuntu. https://bugs.launchpad.net/bugs/1731798 Title: package unattended-upgrades 0.90ubuntu0.7 failed to install/upgrade: subprocess new pre-removal script returned error exit status 1 Status in unattended-upgrades package in Ubuntu: Fix Released Bug description: My ubuntu system locks up regularly. Bugs I've reported about this get closed for inattention, after being ignored, and queries about how to do basic debugging get the same treatment, so I just power cycle whenever it happens again. This time the lock up happened while the GUI upgrade-everything-to- latest tool was running. When I power cycled the box to recover, the system was unusable - flashing "system problem detected" popups, none staying stable long enough to respond. ssh + "sudo apt-get update" + "sudo apt-get upgrade" pointed me to "sudo dpkg --configure -a" That command reported numerous errors - I don't know which of them are "normal" for this system, but hidden by the GUI, and which are new. But it got the system semi-usable from the GUI, so now I'm clicking on "yes, report it" for the many pop-ups, of which this is one. FWIW, unattended-upgrades is one of the ones "dpkg --reconfigure -a" complained about. ProblemType: Package DistroRelease: Ubuntu 16.04 Package: unattended-upgrades 0.90ubuntu0.8 ProcVersionSignature: Ubuntu 4.4.0-93.116-generic 4.4.79 Uname: Linux 4.4.0-93-generic x86_64 NonfreeKernelModules: nvidia ApportVersion: 2.20.1-0ubuntu2.10 Architecture: amd64 Date: Sun Nov 12 11:21:07 2017 ErrorMessage: subprocess new pre-removal script returned error exit status 1 InstallationDate: Installed on 2012-04-26 (2026 days ago) InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425) PackageArchitecture: all RelatedPackageVersions: dpkg 1.18.4ubuntu1.2 apt 1.2.24 SourcePackage: unattended-upgrades Title: package unattended-upgrades 0.90ubuntu0.7 failed to install/upgrade: subprocess new pre-removal script returned error exit status 1 UpgradeStatus: Upgraded to xenial on 2017-03-31 (226 days ago) mtime.conffile..etc.apt.apt.conf.d.50unattended-upgrades: 2017-06-25T18:42:16.676378 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/unattended-upgrades/+bug/1731798/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp