Glancing at DpkgTerminalLog.txt, you are doing weird things that will kill your installation. Glad enough it does not let you do so, and push that 'false' error to alert you.
Take time to learn how to update/upgrade by reading the howto/kiwi from the community. https://help.ubuntu.com/community/Upgrades https://help.ubuntu.com/community/AptGet/Howto There is some graphical tool to do the stuff smoothly, like 'synaptic' sudo apt-get install synaptic sudo synaptic ** Changed in: sudo (Ubuntu) Status: Confirmed => Invalid -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to sudo in Ubuntu. https://bugs.launchpad.net/bugs/1498178 Title: package sudo 1.8.9p5-1ubuntu1.2 failed to install/upgrade: subprocess installed pre-removal script returned error exit status 1 Status in sudo package in Ubuntu: Invalid Bug description: something would not update. sorry for vagueness, new user ProblemType: Package DistroRelease: Ubuntu 14.04 Package: sudo 1.8.9p5-1ubuntu1.2 ProcVersionSignature: Ubuntu 3.19.0-28.30~14.04.1-generic 3.19.8-ckt5 Uname: Linux 3.19.0-28-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.13 Architecture: amd64 Date: Tue Sep 22 00:43:16 2015 DuplicateSignature: package:sudo:1.8.9p5-1ubuntu1.2:subprocess installed pre-removal script returned error exit status 1 ErrorMessage: subprocess installed pre-removal script returned error exit status 1 InstallationDate: Installed on 2015-09-21 (0 days ago) InstallationMedia: Ubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805) RelatedPackageVersions: dpkg 1.17.5ubuntu5.4 apt 1.0.1ubuntu2.10 SourcePackage: sudo Title: package sudo 1.8.9p5-1ubuntu1.2 failed to install/upgrade: subprocess installed pre-removal script returned error exit status 1 UpgradeStatus: No upgrade log present (probably fresh install) VisudoCheck: /etc/sudoers: parsed OK /etc/sudoers.d/README: parsed OK To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/sudo/+bug/1498178/+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
