Bug 431486 - When changing the scaling back and forth some elements in the "screen kcm" become blurry
Summary: When changing the scaling back and forth some elements in the "screen kcm" be...
Status: RESOLVED UPSTREAM
Alias: None
Product: systemsettings
Classification: Applications
Component: kcm_kscreen (other bugs)
Version First Reported In: 5.20.5
Platform: Other Linux
: NOR normal
Target Milestone: ---
Assignee: kscreen-bugs-null@kde.org
URL: https://bugreports.qt.io/browse/QTBUG...
Keywords: wayland-only
Depends on:
Blocks:
 
Reported: 2021-01-12 11:22 UTC by postix
Modified: 2022-11-10 22:30 UTC (History)
4 users (show)

See Also:
Latest Commit:
Version Fixed/Implemented In:
Sentry Crash Report:

Attachments
Screenshot with blurry elements (2.92 MB, image/png)
2021-01-12 11:22 UTC, postix 		Details
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Description postix 2021-01-12 11:22:43 UTC 
Created attachment 134769 [details]
Screenshot with blurry elements

STEPS TO REPRODUCE
1. Start a plasma wayland session
2. Go to the system settings, screen kcm
3. Select 200% scaling and click apply
4. Select 100% scaling and click apply
5. Select 200% scaling and click apply
6. (optional after step 4 or 5) move the scaling slider

OBSERVED RESULT

The text in the input field for the scaling as well as the text in the combobox of the refresh rate become blurry.
On another system, the text in the resolution combobox was blurry instead.

If you go to another KCM and come back, everything looks fine again.


SOFTWARE/OS VERSIONS
Operating System: Manjaro Linux
KDE Plasma Version: 5.20.4
KDE Frameworks Version: 5.77.0
Qt Version: 5.15.2
Graphics Processor: Mesa Intel® HD Graphics 620

ADDITIONAL INFORMATION
HiDPI, Multi-Monitor (also happened on a single screen setup/different system)
Comment 1 Nate Graham 2022-11-10 22:30:42 UTC 
This is unfortunately a known Qt issue on Wayland: https://bugreports.qt.io/browse/QTBUG-78327