[Bug 1790948] Re: package fontconfig 2.11.94-0ubuntu1.1 failed to install/upgrade: triggers looping, abandoned

[Sebastien Bacher]

*** This bug is a duplicate of bug 1759096 ***
    https://bugs.launchpad.net/bugs/1759096

** This bug has been marked a duplicate of bug 1759096
   package fontconfig 2.11.94-0ubuntu2 failed to install/upgrade: triggers looping, abandoned

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https://bugs.launchpad.net/bugs/1790948

Title:
  package fontconfig 2.11.94-0ubuntu1.1 failed to install/upgrade:
  triggers looping, abandoned

Status in fontconfig package in Ubuntu:
  Confirmed

Bug description:
  The problem appeared during upgrading from 16.04 to 18.04
  Similar problems were reported, but for upgrade 14.04 to 16.04, so I decided to open a new bug.

  The upgrade left the system in a broken state:
  root at storage:~# apt update
  Hit:1 http://ro.archive.ubuntu.com/ubuntu bionic InRelease
  Hit:2 http://ro.archive.ubuntu.com/ubuntu bionic-updates InRelease      
  Hit:3 http://security.ubuntu.com/ubuntu bionic-security InRelease       
  Hit:4 http://ro.archive.ubuntu.com/ubuntu bionic-backports InRelease    
  Reading package lists... Done                      
  Building dependency tree       
  Reading state information... Done
  2446 packages can be upgraded. Run 'apt list --upgradable' to see them.
  root at storage:~# apt upgrade
  Reading package lists... Done
  Building dependency tree       
  Reading state information... Done
  You might want to run 'apt-get -f install' to correct these.
  The following packages have unmet dependencies:
   audacious : Depends: libaudcore5 (= 3.9-2) but it is not installed
   audacious-plugins : Depends: audacious-plugins-data (= 3.9-1build2) but 3.6.2-2ubuntu1 is installed
                       Depends: libaudcore5 (>= 3.9) but it is not installed
                       Depends: libaudgui5 (>= 3.9) but it is not installed
                       Depends: libaudtag3 (>= 3.8) but it is not installed
                       Depends: libfluidsynth1 (>= 1.1.6-4~) but 1.1.6-3 is installed
   bogofilter-bdb : Depends: libgsl2 but it is not installable
   checkbox-converged : Depends: qtdeclarative5-ubuntu-ui-toolkit-plugin but it is not installable
   debconf : Breaks: update-notifier-common (< 3.187~) but 3.168.9 is installed
   gnupg : Breaks: software-properties-common (<= 0.96.24.3) but 0.96.20.7 is installed
   kdeconnect-plasma : Depends: plasma-workspace but it is not installed
   libavogadro1 : Depends: libglew2.0 (>= 1.12.0) but it is not installed
   libguvcview-1.1-1 : Depends: libgsl2 but it is not installable
   liboxideqtquick0 : Depends: liboxideqtcore0 (= 1.21.5-0ubuntu0.16.04.1) but it is not installable
   libunity-webapps0 : Depends: unity-webapps-service but it is not installable
   mplayer : Depends: libdirectfb-1.7-7 (>= 1.7.7) but it is not installed
   phonon4qt5-backend-gstreamer : Depends: phonon-backend-gstreamer-common (= 4:4.9.0-1) but 4:4.8.2-0ubuntu2 is installed
   software-properties-kde : Depends: python3-pyqt5 but it is not installed
   unity-control-center-signon : Depends: unity-control-center but it is not installed
   unity-webapps-qml : Depends: qtdeclarative5-ubuntu-ui-toolkit-plugin but it is not installable or
                                qtdeclarative5-ubuntu-ui-toolkit-plugin-gles but it is not installable
   update-notifier : Depends: update-notifier-common (= 3.192.1.3) but 3.168.9 is installed
   xaos : Depends: libgsl2 but it is not installable
   xorg : Depends: xserver-xorg (>= 1:7.7+19ubuntu7.1) but 1:7.7+13ubuntu3.1 is installed
  E: Unmet dependencies. Try using -f.

  Details:

  1)
  Description:    Ubuntu 18.04.1 LTS
  Release:        18.04

  2)
  fontconfig:
    Installed: 2.11.94-0ubuntu1.1
    Candidate: 2.12.6-0ubuntu2
    Version table:
       2.12.6-0ubuntu2 500
          500 http://ro.archive.ubuntu.com/ubuntu bionic/main amd64 Packages
   *** 2.11.94-0ubuntu1.1 100
          100 /var/lib/dpkg/status

  3)
  I expected a successful upgrade from 16.04 to 18.04

  4)
  Now I have a broken system :)

  ProblemType: Package
  DistroRelease: Ubuntu 18.04
  Package: fontconfig 2.11.94-0ubuntu1.1
  ProcVersionSignature: Ubuntu 4.4.0-131.157-generic 4.4.134
  Uname: Linux 4.4.0-131-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2.18
  Architecture: amd64
  Date: Wed Sep  5 22:11:25 2018
  ErrorMessage: triggers looping, abandoned
  RelatedPackageVersions:
   dpkg 1.19.0.5ubuntu2
   apt  1.2.27
  SourcePackage: fontconfig
  Title: package fontconfig 2.11.94-0ubuntu1.1 failed to install/upgrade: triggers looping, abandoned
  UpgradeStatus: Upgraded to bionic on 2018-09-05 (0 days ago)

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