package openjdk-9-jdk (not installed) failed to install/upgrade: trying to overwrite '/usr/lib/jvm/java-9-openjdk-amd64/include/linux/jawt_md.h', which is also in package openjdk-9-jdk-headless:amd64 9~b114-0ubuntu1 -- this happens when I first log in from lightdm to xubuntu

[Jon Woffenden]

Hi. You're my hero because you work for canonical.

Anyway I get this issue with openjdk9 when I first log in to xubuntu from lightdm. I had openjdk8 installed, switched to 9, then switched back and this has happened since.

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: openjdk-9-jdk (not installed)
ProcVersionSignature: Ubuntu 4.4.0-31.50-generic 4.4.13
Uname: Linux 4.4.0-31-generic x86_64
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
Date: Sun Jul 17 00:14:27 2016
ErrorMessage: trying to overwrite '/usr/lib/jvm/java-9-openjdk-amd64/include/linux/jawt_md.h', which is also in package openjdk-9-jdk-headless:amd64 9~b114-0ubuntu1
InstallationDate: Installed on 2016-05-24 (57 days ago)
InstallationMedia: Xubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1
 apt 1.2.10ubuntu1
SourcePackage: openjdk-9
Title: package openjdk-9-jdk (not installed) failed to install/upgrade: trying to overwrite '/usr/lib/jvm/java-9-openjdk-amd64/include/linux/jawt_md.h', which is also in package openjdk-9-jdk-headless:amd64 9~b114-0ubuntu1
UpgradeStatus: No upgrade log present (probably fresh install)

[Jon Woffenden (jwoffenden)]

I've been too lazy/busy to even attempt to look into this, so I wouldn't be surprised if it's something simple, stupid, and/or my fault. Feel free to close as ID10t error.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Tiago Stürmer Daitx (tdaitx)]

Thank you for taking the time to report this bug and helping to make Ubuntu better.

Until this bug is fixed, please uninstall OpenJDK 9 completely and keep using OpenJDK 8.