[Bug 1772694] Re: package libfreetype6 2.8-0.2 failed to install/upgrade: trying to overwrite shared '/usr/share/doc/libfreetype6/changelog.Debian.gz', which is different from other instances of package libfreetype6:amd64

[Goth Queen]

@vorlon - Sorry to say, but this is the incorrect way to go forward.
Fact of the matter is that this indeed is a bug/ issue with the way 18.04 handles fonts.
Just closing it or setting it to invalid does NOT make it go away.
Nor does arguing on the "correct definition" of abhorrent, unproductive system behaviour. 

Reports coming in of folks who in trust upgraded to 18.04 (LTS) do report (e.g. on git) all kind of issues with font rendering. The issue appears connected to libfreetype6 2.8.*, which seem to resolve with either upgrading to 2.9, or downgrading (if possible) to e.g. xenials 2.6 version.
Having installed Xubuntu 18.04 LTS myself this week on a precursor evaluation system (not VM) before applying to production boxen, I can confirm font handling is definitely off on 18.04 LTS. Sizes change all by themselves, and user settings are disregarded and reset upon reboot. These issues are so frequent and significant, that for us this marks 18.04 LTS currently as highly unstable and unreliable, thus holding any transitions from 16.04.

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https://bugs.launchpad.net/bugs/1772694

Title:
  package libfreetype6 2.8-0.2 failed to install/upgrade: trying to
  overwrite shared '/usr/share/doc/libfreetype6/changelog.Debian.gz',
  which is different from other instances of package libfreetype6:amd64

Status in freetype package in Ubuntu:
  Invalid

Bug description:
  I recently upgraded to 18.04, but this caused some problems with some
  text editors I am using. I tried to downgrade libfreetype to 2.8.0,
  which failed, and then I tried running fix-install in apt, but this
  also failed.

  ProblemType: Package
  DistroRelease: Ubuntu 18.04
  Package: libfreetype6 2.8-0.2
  ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17
  Uname: Linux 4.15.0-20-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7
  AptOrdering:
   libfreetype6:amd64: Install
   NULL: ConfigurePending
  Architecture: amd64
  Date: Tue May 22 13:05:52 2018
  Dependencies:
   gcc-8-base 8-20180414-1ubuntu2
   libc6 2.27-3ubuntu1
   libgcc1 1:8-20180414-1ubuntu2
   libpng16-16 1.6.34-1
   zlib1g 1:1.2.11.dfsg-0ubuntu2
  DpkgTerminalLog:
   Preparing to unpack .../libfreetype6_2.8.1-2ubuntu2_amd64.deb ...
   Unpacking libfreetype6:amd64 (2.8.1-2ubuntu2) over (2.8-0.2) ...
   dpkg: error processing archive /var/cache/apt/archives/libfreetype6_2.8.1-2ubuntu2_amd64.deb (--unpack):
    trying to overwrite shared '/usr/share/doc/libfreetype6/changelog.Debian.gz', which is different from other instances of package libfreetype6:amd64
  DuplicateSignature:
   package:libfreetype6:2.8-0.2
   Unpacking libfreetype6:amd64 (2.8.1-2ubuntu2) over (2.8-0.2) ...
   dpkg: error processing archive /var/cache/apt/archives/libfreetype6_2.8.1-2ubuntu2_amd64.deb (--unpack):
    trying to overwrite shared '/usr/share/doc/libfreetype6/changelog.Debian.gz', which is different from other instances of package libfreetype6:amd64
  ErrorMessage: trying to overwrite shared '/usr/share/doc/libfreetype6/changelog.Debian.gz', which is different from other instances of package libfreetype6:amd64
  InstallationDate: Installed on 2017-01-22 (485 days ago)
  InstallationMedia: Ubuntu 16.10 "Yakkety Yak" - Release amd64 (20161012.2)
  Python3Details: /usr/bin/python3.6, Python 3.6.5, python3-minimal, 3.6.5-3
  PythonDetails: /usr/bin/python2.7, Python 2.7.15rc1, python-minimal, 2.7.15~rc1-1
  RelatedPackageVersions:
   dpkg 1.19.0.5ubuntu2
   apt  1.6.1
  SourcePackage: freetype
  Title: package libfreetype6 2.8-0.2 failed to install/upgrade: trying to overwrite shared '/usr/share/doc/libfreetype6/changelog.Debian.gz', which is different from other instances of package libfreetype6:amd64
  UpgradeStatus: Upgraded to bionic on 2018-05-13 (9 days ago)

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