Bug 508645

Summary: segments of digikam window are repeated on screen
Product: [Applications] digikam Reporter: willem <whobers>
Component: Usability-ThemesAssignee: Digikam Developers <digikam-bugs-null>
Status: REOPENED ---    
Severity: normal CC: caulier.gilles, metzpinguin
Priority: NOR    
Version First Reported In: 8.7.0   
Target Milestone: ---   
Platform: EndeavourOS   
OS: Linux   
Latest Commit: Version Fixed/Implemented In: 8.8.0
Sentry Crash Report:
Attachments: screen print showing doubled segments

Description willem 2025-08-23 13:58:20 UTC 
SUMMARY
When using digikam it will happen that suddenly parts/segments of the digikam window get repeated/displaced. 

STEPS TO REPRODUCE
1. Use digikam
2. suddenly segments of the window are shown double
3. 

OBSERVED RESULT
window segments appear double
clicking the mouse anywhere in the window "clicks" somewhere else than where the mouse pointer actually appears to be
minimizing/maximizing does not resolver the issue.
moving the window to another monitor does not resolve the issue

EXPECTED RESULT
no doubling of segments of the window

SOFTWARE/OS VERSIONS
MESA-INTEL: warning: Haswell Vulkan support is incomplete
Operating System: EndeavourOS (= arch)
KDE Plasma Version: 6.4.4
KDE Frameworks Version: 6.17.0
Qt Version: 6.9.1
Kernel Version: 6.12.43-1-lts (64-bit)
Graphics Platform: Wayland
Processors: 4 × Intel® Core™ i5-4570R CPU @ 2.70GHz
Memory: 8 GiB of RAM (7.7 GiB usable)
Graphics Processor: Intel® Iris® Pro Graphics 5200

ADDITIONAL INFORMATION
I can't find what triggers this doubling effect.
The segments that double don't seem to be the same each time.
Comment 1 willem 2025-08-23 13:59:59 UTC 
Created attachment 184380 [details]
screen print showing doubled segments
Comment 2 Maik Qualmann 2025-08-23 14:18:17 UTC 
Probably poor OpenGL support in your system, activate the enforcement of software OpenGL in the digiKam settings under Miscellaneous->System and restart digiKam.

Maik
Comment 3 willem 2025-08-24 08:04:30 UTC 
(In reply to Maik Qualmann from comment #2)
> Probably poor OpenGL support in your system, activate the enforcement of
> software OpenGL in the digiKam settings under Miscellaneous->System and
> restart digiKam.
> 
> Maik

Thanks! Have adjusted the settings and will report back.
Comment 4 willem 2025-08-24 18:36:23 UTC 
(In reply to Maik Qualmann from comment #2)
> Probably poor OpenGL support in your system, activate the enforcement of
> software OpenGL in the digiKam settings under Miscellaneous->System and
> restart digiKam.
> 
> Maik

Problem solved with this adjustment. Thank you.
Comment 5 willem 2025-08-27 08:21:47 UTC 
Despite the suggested adjustments in digikam config this issue still occurs, though not as often as before. Therefore I am reopening this issue.

Looked at the logs (journalctl) but can´t really find anything there that seems related.
Please let me know what I can do to provide more useful info.
Comment 6 caulier.gilles 2025-12-09 03:30:35 UTC 
Can you check with the Linux AppImage bundle that we provide ? Try the current 8.9.0 pre-release available here :

https://files.kde.org/digikam/