dpkg trigger cycle detection was an experimental feature in Debian, and subsequently Ubuntu, was has now been removed from dpkg. Therefore, this bug report is no longer valid and I'm marking it as such.
If you are interested in more information about this issue you could look at: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=776910#42 This may also have been fixed by this commit: - Add ureadahead to the long list of trigger-related Breaks as well from dpkg version 1.17.23ubuntu1. ** Bug watch added: Debian Bug tracker #776910 http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=776910 ** Changed in: ureadahead (Ubuntu) Status: Confirmed => Won't Fix -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to ureadahead in Ubuntu. https://bugs.launchpad.net/bugs/1394849 Title: package libc-bin 2.19-13ubuntu2 failed to install/upgrade: triggers looping, abandoned Status in ureadahead package in Ubuntu: Won't Fix Bug description: error happened during dist-upgrade ProblemType: Package DistroRelease: Ubuntu 15.04 Package: libc-bin 2.19-13ubuntu2 ProcVersionSignature: Ubuntu 3.16.0-24.32-generic 3.16.4 Uname: Linux 3.16.0-24-generic x86_64 ApportVersion: 2.14.7-0ubuntu10 Architecture: amd64 Date: Thu Nov 20 18:06:54 2014 Dependencies: gcc-4.9-base 4.9.2-1ubuntu1 libc6 2.19-13ubuntu2 libcap2 1:2.24-0ubuntu2 libgcc1 1:4.9.2-1ubuntu1 multiarch-support 2.19-13ubuntu2 DuplicateSignature: package:libc-bin:2.19-13ubuntu2:triggers looping, abandoned ErrorMessage: triggers looping, abandoned InstallationDate: Installed on 2014-10-30 (21 days ago) InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Alpha amd64 (20141028) SourcePackage: glibc Title: package libc-bin 2.19-13ubuntu2 failed to install/upgrade: triggers looping, abandoned UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ureadahead/+bug/1394849/+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