Bug 484502

Summary: Application Color Ghosting Around Monitor Edge at Specific Scaling Percentages
Product: [Plasma] kwin Reporter: wilson_tyler57
Component: compositingAssignee: KWin default assignee <kwin-bugs-null>
Status: RESOLVED DUPLICATE    
Severity: minor CC: kde
Priority: NOR    
Version First Reported In: 6.0.2   
Target Milestone: ---   
Platform: Fedora RPMs   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:
Attachments: Screenshot of bottom edge of screen after launching pinned applications.

Description wilson_tyler57 2024-03-26 04:09:35 UTC
Created attachment 167777 [details]
Screenshot of bottom edge of screen after launching pinned applications.

SUMMARY
Color ghosting occurs around edges of monitor when hovering or dragging mouse across after launching new application (when the icon is bouncing next to the cursor). This seems to only happen when the display scaling is set to specific percentages (i.e. occurs at 130% but not at 125%). 

STEPS TO REPRODUCE
1. Launch any application from task bar.
2. Move mouse over edge of screen.

OBSERVED RESULT
Color "ghosting" around edges of screen when launching applications.
Also present around element borders of various applications, but less noticeable.

EXPECTED RESULT
Edges stay same color and do not persist icon colors.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Fedora 40 (Testing) 
(available in About System)
KDE Plasma Version: 6.0.2
KDE Frameworks Version: 6.0.0
Qt Version: 6.6.2

ADDITIONAL INFORMATION
Comment 1 wilson_tyler57 2024-03-26 04:12:32 UTC
I forgot to mention, this is an AMD based Framework 13 (ryzen 7 7840u).
Comment 2 David Edmundson 2024-04-15 15:59:30 UTC

*** This bug has been marked as a duplicate of bug 485561 ***