This was finally fixed by removing the webupd8team PPA from the repositories. I thought I had removed them completely, but one was still checked. I also had to follow the instructions in the first answer to the question:
https://askubuntu.com/questions/56104/how-can-i-install-sun-oracles- proprietary-java-jdk-6-7-8-or-jre I followed the manual download and install steps, plus the steps for NetBeans which failed. I rebuilt my cache using the commandline in Terminal: > sudo apt --fix-broken install Conclusion: I think that other developers and/or users will experience this area and be similarly frustrated in finding the answer. Perhaps it could in part be addressed by updating the WEB UPD8 blog referenced below with a 2019 date in the uri. It would also be nice to have it support HTTPS Everywhere as it doesn't convert to an https:// address on my web browsers (Chromium or Firefox): http://www.webupd8.org/2012/09/install-oracle-java-8-in-ubuntu-via- ppa.html For my system you can consider this issue resolved. Feel free to contact me if you have any questions: <gnace(at)ieee.org> -- You received this bug notification because you are a member of OpenJDK, which is subscribed to openjdk-8 in Ubuntu. https://bugs.launchpad.net/bugs/1806265 Title: package openjdk-8-jre-headless 8u181-b13-1ubuntu0.18.04.1 failed to install/upgrade: trying to overwrite shared '/etc/java-8-openjdk/security/java.security', which is different from other instances of package openjdk-8-jre-headless:amd64 Status in openjdk-8 package in Ubuntu: New Bug description: Package crash on automated install. ProblemType: Package DistroRelease: Ubuntu 18.04 Package: openjdk-8-jre-headless 8u181-b13-1ubuntu0.18.04.1 ProcVersionSignature: Ubuntu 4.15.0-42.45-generic 4.15.18 Uname: Linux 4.15.0-42-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.20.9-0ubuntu7.5 AptOrdering: openjdk-8-jdk:amd64: Install openjdk-8-jdk-headless:amd64: Install openjdk-8-jre:amd64: Install openjdk-8-jre-headless:amd64: Install NULL: ConfigurePending Architecture: amd64 Date: Wed Nov 28 06:37:25 2018 DuplicateSignature: package:openjdk-8-jre-headless:8u181-b13-1ubuntu0.18.04.1 Unpacking openjdk-8-jre-headless:amd64 (8u191-b12-0ubuntu0.18.04.1) over (8u181-b13-1ubuntu0.18.04.1) ... dpkg: error processing archive /var/cache/apt/archives/openjdk-8-jre-headless_8u191-b12-0ubuntu0.18.04.1_amd64.deb (--unpack): trying to overwrite shared '/etc/java-8-openjdk/security/java.security', which is different from other instances of package openjdk-8-jre-headless:amd64 ErrorMessage: trying to overwrite shared '/etc/java-8-openjdk/security/java.security', which is different from other instances of package openjdk-8-jre-headless:amd64 Python3Details: /usr/bin/python3.6, Python 3.6.7, python3-minimal, 3.6.7-1~18.04 PythonDetails: /usr/bin/python2.7, Python 2.7.15rc1, python-minimal, 2.7.15~rc1-1 RelatedPackageVersions: dpkg 1.19.0.5ubuntu2.1 apt 1.6.6 SourcePackage: openjdk-8 Title: package openjdk-8-jre-headless 8u181-b13-1ubuntu0.18.04.1 failed to install/upgrade: trying to overwrite shared '/etc/java-8-openjdk/security/java.security', which is different from other instances of package openjdk-8-jre-headless:amd64 UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/openjdk-8/+bug/1806265/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~openjdk Post to : openjdk@lists.launchpad.net Unsubscribe : https://launchpad.net/~openjdk More help : https://help.launchpad.net/ListHelp
