I too was affected by this bug. Running 14.04.5 (ASUS NX500J Notebook), no outstanding updates - but HWE upgrade performed to 16.04 compatible as prompted before upgrade, upgrade from terminal to 16.04.1:
$ sudo do-release-upgrade Failed as described by Boki during initial upgrade. Upon reboot I was unable to login via the UI, the UI looked messed up and was unresponsive. But I could access the terminal via: ctrl+alt+f1 I was able to restore a seemingly working 16.04.1 using the following steps: $ sudo apt-get dist-upgrade This showed that I was missing a couple of dependencies, the names escape me - but it wasn't the offending package. $ sudo apt-get -f install Installed missing dependencies. $ sudo apt-get dist-upgrade This showed a large number of unneeded packages and more importantly a even larger number of up-gradable packages I installed them, while being randomly being prompted for the password for the encrypted swap-partition. It took a while but it succeeded. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to fontconfig in Ubuntu. https://bugs.launchpad.net/bugs/1617020 Title: package fontconfig 2.11.94-0ubuntu1.1 failed to install/upgrade: triggers looping, abandoned Status in fontconfig package in Ubuntu: Confirmed Bug description: I was upgrading from 14.04 to 16.04 as suggested by the GUI. ProblemType: Package DistroRelease: Ubuntu 16.04 Package: fontconfig 2.11.94-0ubuntu1.1 ProcVersionSignature: Ubuntu 3.13.0-93.140-generic 3.13.11-ckt39 Uname: Linux 3.13.0-93-generic x86_64 NonfreeKernelModules: nvidia ApportVersion: 2.14.1-0ubuntu3.21 Architecture: amd64 Date: Thu Aug 25 20:03:10 2016 DuplicateSignature: package:fontconfig:2.11.94-0ubuntu1.1:triggers looping, abandoned ErrorMessage: triggers looping, abandoned InstallationDate: Installed on 2015-01-27 (575 days ago) InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2) RelatedPackageVersions: dpkg 1.18.4ubuntu1.1 apt 1.2.12~ubuntu16.04.1 SourcePackage: fontconfig Title: package fontconfig 2.11.94-0ubuntu1.1 failed to install/upgrade: triggers looping, abandoned UpgradeStatus: Upgraded to xenial on 2016-08-25 (0 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/fontconfig/+bug/1617020/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
