Bug 412118 - After I enable fractional display scaling on Wayland, Plasma and Qt5 apps already running become blurry until they are restarted
Summary: After I enable fractional display scaling on Wayland, Plasma and Qt5 apps alr...
Status: RESOLVED DUPLICATE of bug 433416
Alias: None
Product: KScreen
Classification: Plasma
Component: common (show other bugs)
Version: 5.20.90
Platform: Arch Linux Linux
: NOR normal
Target Milestone: ---
Assignee: kscreen-bugs-null@kde.org
URL:
Keywords: wayland
Depends on:
Blocks:
 
Reported: 2019-09-20 12:50 UTC by Patrick Silva
Modified: 2021-06-01 16:15 UTC (History)
3 users (show)

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Description Patrick Silva 2019-09-20 12:50:02 UTC 
STEPS TO REPRODUCE
1. start Wayland session
2. open any app that runs natively on Wayland, let's say Dolphin
3. search for "display configuration" KCM in the apps launcher and open it
4.. change display scale factor from 1 to 1.2

OBSERVED RESULT
Dolphin and Plasma look blurry. 
Dolphin is not blurry after you restart it and Plasma is not blurry after relogin.

EXPECTED RESULT
Apps and Plasma are crisp immediately after fractional display scaling to be enabled.

SOFTWARE/OS VERSIONS
Operating System: Arch Linux 
KDE Plasma Version: 5.16.90
KDE Frameworks Version: 5.62.0
Qt Version: 5.13.1
Comment 1 Patrick Silva 2020-05-15 14:17:19 UTC 
Operating System: Arch Linux 
KDE Plasma Version: 5.18.90
KDE Frameworks Version: 5.70.0
Qt Version: 5.15.0 rc2
Comment 2 Claudius Ellsel 2020-08-10 11:06:10 UTC 
Marking as confirmed. I think I experienced exactly the same behavior, also noticeable looking at the mouse cursor.
Comment 3 Nate Graham 2021-06-01 16:15:57 UTC 

*** This bug has been marked as a duplicate of bug 433416 ***