[Bug 1788192] Re: package base-files 10.1ubuntu2.2 failed to install/upgrade: end of file on stdin at conffile prompt

[Val]

Same severe issue here - Kubuntu 18.04.1, recently upgraded from 16.04.5 without problems.
Since base-files 10.1ubuntu2.2 was released, it's been impossible to install it via Discover. No user password is asked for in order to install the update. Discover just hangs, even preventing the disconnection from my Plasma session ("Disconnection canceled by /usr/bin/plasma-discover") - I have to kill the plasma-discover process manually in order to shutdown or reboot my PC.
Additional package updates came in for installation today (now a total of 7 package updates pending installation), the issue persists of course, base-files 10.1ubuntu2.2 prevents the installation of all other package updates.
This bug needs to be taken in account very seriously, I'm afraid novice users will get stuck with their graphical update manager (be it Discover or not), unable to install any more package updates from August 21st until this issue gets fixed.
Do you need additional information about my own configuration files (in order to analyze the cause of this issue) or should I test an "apt update" in a terminal without waiting?
Thank you.

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Title:
  package base-files 10.1ubuntu2.2 failed to install/upgrade: end of
  file on stdin at conffile prompt

Status in base-files package in Ubuntu:
  Incomplete

Bug description:
  I have been facing update problems every month.

  ProblemType: Package
  DistroRelease: Ubuntu 18.04
  Package: base-files 10.1ubuntu2.2
  ProcVersionSignature: Ubuntu 4.15.0-32.35-generic 4.15.18
  Uname: Linux 4.15.0-32-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7.2
  AptOrdering:
   base-files:amd64: Install
   base-files:amd64: Configure
   NULL: ConfigurePending
  Architecture: amd64
  Date: Tue Aug 21 10:15:39 2018
  Dependencies:
   
  ErrorMessage: end of file on stdin at conffile prompt
  InstallationDate: Installed on 2018-03-14 (159 days ago)
  InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20180105.1)
  Python3Details: /usr/bin/python3.6, Python 3.6.5, unpackaged
  PythonDetails: /usr/bin/python2.7, Python 2.7.15rc1, unpackaged
  RelatedPackageVersions:
   dpkg 1.19.0.5ubuntu2
   apt  1.6.3
  SourcePackage: base-files
  Title: package base-files 10.1ubuntu2.2 failed to install/upgrade: end of file on stdin at conffile prompt
  UpgradeStatus: No upgrade log present (probably fresh install)
  modified.conffile..etc.issue:
   Ubuntu 18.04 LTS \n \l
  modified.conffile..etc.issue.net: Ubuntu 18.04 LTS
  modified.conffile..etc.lsb-release:
   DISTRIB_ID=Ubuntu
   DISTRIB_RELEASE=18.04
   DISTRIB_CODENAME=bionic
   DISTRIB_DESCRIPTION="Ubuntu 18.04 LTS"
  mtime.conffile..etc.issue: 2018-04-24T05:34:22
  mtime.conffile..etc.issue.net: 2018-04-24T05:34:22
  mtime.conffile..etc.legal: 2015-10-22T15:15:21
  mtime.conffile..etc.lsb-release: 2018-04-24T05:33:11
  mtime.conffile..etc.update-motd.d.00-header: 2015-10-22T15:15:21
  mtime.conffile..etc.update-motd.d.10-help-text: 2016-06-14T09:23:23
  mtime.conffile..etc.update-motd.d.50-motd-news: 2017-06-29T12:35:01

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