https://bugs.kde.org/show_bug.cgi?id=483192
Bug ID: 483192
Summary: Text and images are not properly scaled at 150%
display scale
Classification: Applications
Product: Falkon
Version: 24.02.0
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: now...@gmail.com
Reporter: wks1...@gmail.com
Target Milestone: ---
Created attachment 166929
--> https://bugs.kde.org/attachment.cgi?id=166929&action=edit
Falkon browser at 150% display scale
SUMMARY
This happens after upgrading to KDE6. I set my monitor to 150% scale. But the
web content I see in the Falkon browser seems to be zoomed badly, with text and
image edges with uneven widths, as if it were zoomed using near-neighbour
interpolation.
STEPS TO REPRODUCE
1. Open System Settings, go to "Display & Monitor", and set "Scale" to 150%
2. Open the Falkon browser
3. Open any web page (such as the default page https://www.falkon.org/)
OBSERVED RESULT
See the attached screenshot. Characters are badly shaped, with unevenly thick
and thin strokes. The image is also a bit blurred.
EXPECTED RESULT
The text should have sharp edges, and the image should not be that blurred.
SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 6.0.1
KDE Frameworks Version: 6.0.0
Qt Version: 6.6.2
Kernel Version: 6.7.9-arch1-1 (64-bit)
Graphics Platform: Wayland
ADDITIONAL INFORMATION
If I set "Scale" to 100%, the problem disappears.
This same problem also appears in the Angelfish browser.
This problem does not appear in the Firefox browser (running natively as a
Wayland client) even if the "Scale" is set at 150%.
I am using the Plasma Wayland session. If I invoke "falkon --platform xcb" on
the command line, the text looks smoother. But I am not sure whether it is
aware of HiDPI and therefore renders directly at higher resolution, or it uses
a smoother scaling algorithm.
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