https://bugs.kde.org/show_bug.cgi?id=442901
Bug ID: 442901
Summary: GTK4 apps have double scaling on hidpi
Product: plasmashell
Version: 5.22.5
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: k...@davidedmundson.co.uk
Reporter: el...@seznam.cz
CC: plasma-b...@kde.org
Target Milestone: 1.0
SUMMARY
I use Plasma on 4K display with scaling set to 200 %. PulseEffects (GTK3)
worked fine, however now with EasyEffects (renamed PulseEffects and ported
GTK4) installed, window is double scaled e.g. it is shown with scaling of 400
%. I tried running EasyEffects with variables GDK_SCALE and GDK_DPI_SCALE, but
it doesn't seem to have any effect. Already checked with EasyEffects developers
(https://github.com/wwmm/easyeffects/issues/1167) and it's not an issue with
EasyEffects, because same issue exists also with gtk4-demo application.
STEPS TO REPRODUCE
1. Have 4K display with 200 % scaling
2. Install gtk4-demos
3. Run gtk4-demo
OBSERVED RESULT
Application has 400 % scaling.
EXPECTED RESULT
Application has 200 % scaling as everything else.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Manjaro Testing
KDE Plasma Version: 5.22.5
KDE Frameworks Version: 5.86.0
Qt Version: 5.15.2
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