Oneiric is no more maintained since a while, and such issue is not met with recent package
** Changed in: apt (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to apt in Ubuntu. https://bugs.launchpad.net/bugs/1200320 Title: package apt 0.8.16~exp5ubuntu13.7 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1 Status in apt package in Ubuntu: Invalid Bug description: Trying to get from 11.04 to 12.04. - Replaced 11.04 sources list with old-releases repos. - Added to keyring sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 437D05B5 3E5C1192 - do-release-upgrade Finally starts working to go to 11.10 but fails with the following error. Setting up apt (0.8.16~exp5ubuntu13.7) ... Installing new version of config file /etc/cron.daily/apt ... Installing new version of config file /etc/apt/apt.conf.d/20changelog ... ERROR: Can't find the archive-keyring Is the ubuntu-keyring package installed? dpkg: error processing apt (--configure): subprocess installed post-installation script returned error exit status 1 Exception during pm.DoInstall(): E:Sub-process /usr/bin/dpkg returned an error code (1) *** The package "apt 0.8.16~exp5ubuntu13.7" failed to install or upgrade. ProblemType: Package DistroRelease: Ubuntu 11.10 Package: apt 0.8.16~exp5ubuntu13.7 ProcVersionSignature: Ubuntu 2.6.38-8.42-virtual 2.6.38.2 Uname: Linux 2.6.38-8-virtual x86_64 Architecture: amd64 Date: Thu Jul 11 17:42:28 2013 Ec2AMI: ami-409e4c29 Ec2AMIManifest: (unknown) Ec2AvailabilityZone: us-east-1b Ec2InstanceType: m1.small Ec2Kernel: aki-427d952b Ec2Ramdisk: unavailable ErrorMessage: subprocess installed post-installation script returned error exit status 1 SourcePackage: apt Title: package apt 0.8.16~exp5ubuntu13.7 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1 UpgradeStatus: Upgraded to oneiric on 2013-07-11 (0 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apt/+bug/1200320/+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