Bug 488351 - Strange distortion under centred panel in KDE 6.0.5/Fedora 40
Summary: Strange distortion under centred panel in KDE 6.0.5/Fedora 40
Status: RESOLVED DUPLICATE of bug 488295
Alias: None
Product: plasmashell
Classification: Plasma
Component: Panel (show other bugs)
Version: 6.0.5
Platform: Other Linux
: NOR normal
Target Milestone: 1.0
Assignee: Plasma Bugs List
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2024-06-11 13:24 UTC by Dave Thompson
Modified: 2024-06-11 20:42 UTC (History)
2 users (show)

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

Attachments
Screen capture of the panel with artefacts (62.07 KB, image/png)
2024-06-11 13:24 UTC, Dave Thompson 		Details
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Description Dave Thompson 2024-06-11 13:24:21 UTC 
Created attachment 170370 [details]
Screen capture of the panel with artefacts

SUMMARY

Seeing strange artefacts around the KDE panel when it's in centred mode floating at the bottom of the screen. See screenshot that's attached to the report.

This is a fresh installation of KDE 6.0.5 on Fedora 40 using the Breeze Dark theme and a standard wallpaper.

Do note that this is an external screen connected to a (closed) laptop.

It appears the code that draws the shadow around the panel is not using the correct background to render the alpha-blended shadows on.

System details:
Operating System: Fedora Linux 40
KDE Plasma Version: 6.0.5
KDE Frameworks Version: 6.3.0
Qt Version: 6.7.1
Kernel Version: 6.8.11-300.fc40.x86_64 (64-bit)
Graphics Platform: Wayland
Processors: 22 × Intel® Core™ Ultra 7 155H
Memory: 30.8 GiB of RAM
Graphics Processor: Mesa Intel® Arc
Manufacturer: LG Electronics
Product Name: 17Z90SP-E.ADB9U1
System Version: 0.1
Comment 1 Dave Thompson 2024-06-11 13:26:38 UTC 
What's also interesting is that changing the wallpaper doesn't remove the artefact, nor does changing the size of the panel.
Comment 2 Dave Thompson 2024-06-11 15:44:53 UTC 
Also, happens on all panels, not just the panel with the Task Manager on...
Comment 3 Dave Thompson 2024-06-11 17:48:21 UTC 
Only happens when the panel is set to be transparent/translucent. If it's opaque the error is not seen.
Comment 4 Dave Thompson 2024-06-11 18:08:58 UTC 
Ignore above - also happens on Opaque mode!
Comment 5 duha.bugs 2024-06-11 20:42:45 UTC 

*** This bug has been marked as a duplicate of bug 488295 ***