JOSM is unusable because text is too small

[anonymous]

What steps will reproduce the problem?

1. Install JOSM
2. Open JOSM

What is the expected result?

Have a usable UI.

What happens instead?

See a UI displaying text with a height of about 1 mm

Please provide any additional information below. Attach a screenshot if possible.

URL:https://josm.openstreetmap.de/svn/trunk
Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last:Changed Date: 2019-12-31 14:25:24 +0100 (Tue, 31 Dec 2019)
Build-Date:2019-12-31 13:27:22
Revision:15625
Relative:URL: ^/trunk

Identification: JOSM/1.5 (15625 de) Linux Ubuntu 19.10
Memory Usage: 544 MB / 1765 MB (385 MB allocated, but free)
Java version: 1.8.0_102-b14, Oracle Corporation, Java HotSpot(TM) 64-Bit Server VM
Screen: :0.0 3840x2160
Maximum Screen Size: 3840x2160
libcommons-compress-java: libcommons-compress-java:all-1.18-3
libcommons-logging-java: libcommons-logging-java:all-1.2-2
fonts-noto: fonts-noto:all-20181227-1
VM arguments: [-Djosm.restart=true, -Djava.net.useSystemProxies=true, -Dawt.useSystemAAFontSettings=lcd]

Last errors/warnings:
- W: No configuration settings found.  Using hardcoded default values for all pools.
- W: Region [TMS_BLOCK_v2] Resetting cache
- W: Region [WMS_BLOCK_v2] Resetting cache
- W: Region [WMTS_BLOCK_v2] Resetting cache

[anonymous]

Screenshot

[stoecker]

Please upgrade to at least Java 11 and tell results.

[mdk]

Perhaps showing a warning when starting JOSM with java 8 on a 4k display and suggest upgrading to Java 11.

[anonymous]

The same effect with OpenJDK Runtime Environment (build 11.0.5+10-post-Debian-1deb10u1)

Font too small.

[skyper]

Replying to anonymous:

The same effect with OpenJDK Runtime Environment (build 11.0.5+10-post-Debian-1deb10u1)

Font too small.

I remember, on debian, I had to set/pass a variable the last time I had access to a hidpi display. Think it was GDK_SCALE=2.

Best description I found for settings with hidpi was on the arch linux wiki page (​HiDPI). See section Java.

[Don-vip]

Closed as duplicate of #11806.