Bug 431486

Summary: When changing the scaling back and forth some elements in the "screen kcm" become blurry
Product: [Applications] systemsettings Reporter: postix <postix>
Component: kcm_kscreenAssignee: kscreen-bugs-null <kscreen-bugs-null>
Status: RESOLVED UPSTREAM    
Severity: normal CC: nate, null, plasma-bugs-null, postix
Priority: NOR Keywords: wayland-only
Version First Reported In: 5.20.5   
Target Milestone: ---   
Platform: Other   
OS: Linux   
URL: https://bugreports.qt.io/browse/QTBUG-78327
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:
Attachments: Screenshot with blurry elements

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 IntelĀ® 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