Bug 482329

Summary:	On X11, Force Font DPI setting now affects more than just the font size
Product:	[Applications] systemsettings	Reporter:	popov895 <popov895>
Component:	kcm_fonts	Assignee:	Plasma Bugs List <plasma-bugs-null>
Status:	RESOLVED INTENTIONAL
Severity:	normal	CC:	dougshaw77, kde, kishore96, nate, nicolas.fella, popov895, sannythebest95
Priority:	NOR	Keywords:	qt6
Version First Reported In:	6.0.0
Target Milestone:	---
Platform:	Other
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description popov895 2024-03-03 17:54:46 UTC

SUMMARY

In Plasma 5, the Force Font DPI option only affects the font size (which is expected and consistent with its name). In Plasma 6, this option affects the entire UI and has the same effect as Global Scale on the Display Configuration page. It would be wise to bring back its behavior as in Plasma 5.

SOFTWARE/OS VERSIONS

Operating System: KDE neon 6.0
KDE Plasma Version: 6.0.0
KDE Frameworks Version: 6.0.0
KDE Gear Version: 24.02.0
Qt Version: 6.6.2
Kernel Version: 6.5.0-21-generic (64-bit)
Graphics Platform: X11
Graphics Processor: Mesa Intel® UHD Graphics 620

Comment 1 Doug 2024-03-04 06:06:09 UTC

Can reproduce.

Operating System: KDE neon Testing Edition
KDE Plasma Version: 6.0.0
KDE Frameworks Version: 6.0.0
Qt Version: 6.6.2
Kernel Version: 6.5.0-21-generic (64-bit)
Graphics Platform: Wayland
Processors: 12 × Intel® Core™ i7-9750H CPU @ 2.60GHz
Memory: 15.4 GiB of RAM
Graphics Processor: AMD Radeon Pro WX 3200 Series

Comment 2 Doug 2024-03-06 04:43:12 UTC

I can reproduce this on Wayland, too.

Comment 3 Nate Graham 2024-03-06 05:27:00 UTC

There is no Force Font DPI setting on Wayland in Plasma 6, and the value set for it on X11 is ignored on Wayland. So what you're seeing is something else.

Comment 4 Kishore Gopalakrishnan 2024-03-10 10:26:44 UTC

I find that with the 'force fonts DPI' setting disabled and Display scaling set to 150% on X11,

1. Qt5 applications are not scaled (checked with Cantor and Kile)
2. The titlebars of all windows are unscaled

Nevertheless, gtk3 applications (gedit) and Qt6 applications (System Settings and Dolphin) have their content scaled correctly.

Comment 5 David Edmundson 2025-01-13 12:21:13 UTC

This all works as intended.