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[Tiago Stürmer Daitx <1765914@xxxxxxxxxxxxxxxxxx>]

** Also affects: unity-settings-daemon (Ubuntu)
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1765914

Title:
  Java windows and fonts are huge running in openjdk-11-jre

Status in openjdk-lts package in Ubuntu:
  New
Status in unity-settings-daemon package in Ubuntu:
  New

Bug description:
  If I run a Java application with oracle-java-8 in an X session, the
  windows and fonts are all normal size. When I run the same application
  with openjdk-11-jre, everything is scaled up to double size (see
  attached image, which shows an application on the left running in Java
  8 and the same application on the right running in Java 10 (from the
  package openjdk-11, not openjdk-10 for some reason).

  My normal screen layout is 1920x1080 with two screens, so the command
  "xrandr -q | awk -F'current' -F',' 'NR==1 {gsub("(
  |current)","");print $2}'" shows 1920x2160.

  One of the screens is 4K, so presumably Java *might* be detecting this
  and deciding it needs to double everything in size, but this is
  clearly an error since I'm not even using this mode.

  If I set the laptop to use a single external 1920x1080 monitor, it
  makes no difference - the Java applications are still double the size
  that they should be.

  There's no problem if I run in a Wayland session - the app windows run
  at a normal size whether in java 10 or 8.

  
  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: openjdk-11-jre 10.0.1+10-1ubuntu2
  Uname: Linux 4.17.0-041700rc1-generic x86_64
  ApportVersion: 2.20.9-0ubuntu6
  Architecture: amd64
  CurrentDesktop: ubuntu:GNOME
  Date: Sat Apr 21 14:12:39 2018
  InstallationDate: Installed on 2017-08-16 (247 days ago)
  InstallationMedia: Ubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412)
  SourcePackage: openjdk-lts
  UpgradeStatus: Upgraded to bionic on 2017-11-17 (154 days ago)

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