This bug was fixed in the package dpkg - 1.18.4ubuntu1.1 --------------- dpkg (1.18.4ubuntu1.1) xenial; urgency=medium
* Add Breaks on ufw (<< 0.35-0ubuntu2~) for trigger loops (LP: #1571174) -- Adam Conrad <adcon...@ubuntu.com> Thu, 12 May 2016 04:35:55 -0600 ** Changed in: dpkg (Ubuntu Xenial) Status: Fix Committed => Fix Released -- You received this bug notification because you are a member of नेपाली भाषा समायोजकहरुको समूह, which is subscribed to Xenial. Matching subscriptions: Ubuntu 16.04 Bugs https://bugs.launchpad.net/bugs/1571174 Title: package squid3 failed to install/upgrade: dependency problems - leaving triggers unprocessed Status in dpkg package in Ubuntu: Invalid Status in squid3 package in Ubuntu: Invalid Status in dpkg source package in Xenial: Fix Released Status in squid3 source package in Xenial: In Progress Bug description: [ SRU Justification ] Older versions of ufw had an interest-await trigger, causing trigger loops in some cases, especially the case of upgrading squid3. The newer version fixed this, however if squid is upgraded first, that's no help. [ Test Case ] == In a wily chroot with updates/security enabled == apt-get install ufw squid3 sed -i -e 's/wily/xenial/g' /etc/apt/sources.list apt-get update apt-get dist-upgrade == Repeat the above with xenial-proposed added before the upgrade == Should succeed if either squid or dpkg have been updated for the Breaks. [ Test Case 2 ] [racb] I noticed that this doesn't reproduce every time, so try it a few times. Steps to reproduce: lxc launch ubuntu:wily squid3-upgrade lxc exec squid3-upgrade bash apt-get update && apt-get -y dist-upgrade apt-get install -y squid3 ufw sed -i s/wily/xenial/g /etc/apt/sources.list apt-get update systemctl mask systemd-sysctl.service # workaround for LP: #1580984 DEBIAN_FRONTEND=noninteractive apt-get -y -o DPkg::options::=--force-confnew dist-upgrade Expected result: success Actual result: dpkg: dependency problems prevent processing triggers for ufw: ufw depends on python3; however: Package python3 is not configured yet. ufw depends on python3:any (>= 3.3.2-2~); however: Package python3 is not configured yet. dpkg: error processing archive /var/cache/apt/archives/squid3_3.5.12-1ubuntu7_all.deb (--unpack): dependency problems - leaving triggers unprocessed E: Sub-process /usr/bin/dpkg returned an error code (1) Cleanup after test: exit lxc delete -f squid3-upgrade [ Original Report ] During an upgrade from 15.10 to 16.04, upgrading squid3 erred out... ProblemType: Package DistroRelease: Ubuntu 16.04 Package: squid3 3.3.8-1ubuntu16.2 ProcVersionSignature: Ubuntu 4.2.0-34.39-generic 4.2.8-ckt4 Uname: Linux 4.2.0-34-generic x86_64 ApportVersion: 2.19.1-0ubuntu5 Architecture: amd64 Date: Sat Apr 16 05:33:51 2016 DuplicateSignature: package:squid3:3.3.8-1ubuntu16.2:dependency problems - leaving triggers unprocessed ErrorMessage: dependency problems - leaving triggers unprocessed InstallationDate: Installed on 2015-12-07 (131 days ago) InstallationMedia: Ubuntu-Server 15.10 "Wily Werewolf" - Release amd64 (20151021) RelatedPackageVersions: dpkg 1.18.4ubuntu1 apt 1.2.10ubuntu1 SourcePackage: squid3 Title: package squid3 3.3.8-1ubuntu16.2 failed to install/upgrade: dependency problems - leaving triggers unprocessed UpgradeStatus: Upgraded to xenial on 2016-04-16 (0 days ago) modified.conffile..etc.apparmor.d.usr.sbin.squid3: [deleted] modified.conffile..etc.init.d.squid3: [deleted] modified.conffile..etc.init.squid3.conf: [deleted] modified.conffile..etc.logrotate.d.squid3: [deleted] modified.conffile..etc.resolvconf.update.libc.d.squid3: [deleted] modified.conffile..etc.squid3.errorpage.css: [deleted] modified.conffile..etc.squid3.msntauth.conf: [deleted] modified.conffile..etc.squid3.squid.conf: [deleted] modified.conffile..etc.ufw.applications.d.squid3: [deleted] To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/dpkg/+bug/1571174/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~group.of.nepali.translators Post to : group.of.nepali.translators@lists.launchpad.net Unsubscribe : https://launchpad.net/~group.of.nepali.translators More help : https://help.launchpad.net/ListHelp