#1110373 openjdk-21-jre: font size issue with HiDPI screen - lack of documentation

Package:
openjdk-21-jre
Source:
openjdk-21-jre
Description:
OpenJDK Java runtime, using Hotspot JIT
Submitter:
Vincent Lefevre
Date:
2025-08-04 01:47:03 UTC
Severity:
normal
#1110373#5
Date:
2025-08-04 01:45:52 UTC
From:
To:
By default, text is too small with HiDPI screens, and I couldn't
find any documentation in Debian on how to change that.

I've eventually found

https://wiki.archlinux.org/title/HiDPI

which mentions the sun.java2d.uiScale property, e.g.

  java -Dsun.java2d.uiScale=2 ...

But it is not possible to choose a non-integer scale factor.

There should be proper documentation in the java(1) man page
and/or README.Debian file.