Bug 499101 - KDE settings open scaled up for a split second
Summary: KDE settings open scaled up for a split second
Status: CONFIRMED
Alias: None
Product: systemsettings
Classification: Applications
Component: general (show other bugs)
Version: 6.2.5
Platform: Arch Linux Linux
: NOR minor
Target Milestone: ---
Assignee: Plasma Bugs List
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2025-01-24 18:56 UTC by Anton Ždanov
Modified: 2025-03-13 19:48 UTC (History)
6 users (show)

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


Attachments
Video (2.27 MB, video/mp4)
2025-01-24 18:56 UTC, Anton Ždanov
Details

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Description Anton Ždanov 2025-01-24 18:56:17 UTC
Created attachment 177650 [details]
Video

SUMMARY
When I open the KDE settings, the window is scaled very large for a split second, then it goes back to normal.

STEPS TO REPRODUCE
1. Right click on desktop
2. Click display configuration

OBSERVED RESULT
See how window is scaled up for a second then scales down to normal.

Video: https://streamable.com/d02llb
Forum post: https://forum.endeavouros.com/t/kde-settings-open-scaled-up-for-a-split-second/66685

EXPECTED RESULT
Should open without scaling up and down.

SOFTWARE/OS VERSIONS
Windows: 
macOS: 
(available in the Info Center app, or by running `kinfo` in a terminal window)
Linux/KDE Plasma: 6.12.10-arch1-1 (64-bit)
KDE Plasma Version:  6.2.5
KDE Frameworks Version: 6.10.0
Qt Version: 6.8.1

ADDITIONAL INFORMATION
Several people could reproduce this
Comment 1 David Edmundson 2025-01-27 14:25:23 UTC
Can you confirm if this is X or Wayland?

I cannot reproduce with Wayland + Qt 6.9
Comment 2 Anton Ždanov 2025-01-27 15:38:25 UTC
(In reply to David Edmundson from comment #1)
> Can you confirm if this is X or Wayland?
> 
> I cannot reproduce with Wayland + Qt 6.9

It is Wayland. Someone from the forum link that I posted mentioned that it was not reproducible on KDE Plasma 6.3 beta.
Comment 3 Bug Janitor Service 2025-02-11 03:46:49 UTC
🐛🧹 ⚠️ This bug has been in NEEDSINFO status with no change for at least 15 days. Please provide the requested information, then set the bug status to REPORTED. If there is no change for at least 30 days, it will be automatically closed as RESOLVED WORKSFORME.

For more information about our bug triaging procedures, please read https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging.

Thank you for helping us make KDE software even better for everyone!
Comment 4 Anton Ždanov 2025-02-12 03:55:12 UTC
(In reply to David Edmundson from comment #1)
> Can you confirm if this is X or Wayland?
> 
> I cannot reproduce with Wayland + Qt 6.9

Any other info I can provide to help?
Comment 5 Adam Fontenot 2025-02-12 22:54:26 UTC
I confirm this immediately after upgrading to 6.3 on Wayland. My screen is at 1:1 pixel ratio. I wonder if the application initially assumes that the screen "ought" to use a different pixel ratio, before loading the setting.
Comment 6 Adam Fontenot 2025-02-12 23:00:59 UTC
I just noticed that this only seems to happen for me when opening the "Display Configuration" KCM. Opening other KCMs or the main application directly doesn't show this issue for me. Do you see this as well Anton?

Operating System: Arch Linux 
KDE Plasma Version: 6.3.0
KDE Frameworks Version: 6.10.0
Qt Version: 6.8.2
Kernel Version: 6.13.2-arch1-1 (64-bit)
Graphics Platform: Wayland
Comment 7 Anton Ždanov 2025-02-13 06:12:18 UTC
(In reply to Adam Fontenot from comment #6)
> I just noticed that this only seems to happen for me when opening the
> "Display Configuration" KCM. Opening other KCMs or the main application
> directly doesn't show this issue for me. Do you see this as well Anton?
> 
> Operating System: Arch Linux 
> KDE Plasma Version: 6.3.0
> KDE Frameworks Version: 6.10.0
> Qt Version: 6.8.2
> Kernel Version: 6.13.2-arch1-1 (64-bit)
> Graphics Platform: Wayland

I think it's Display and Configuration only. Either from right mouse button click menu, or if searching in the application launcher and opening there. I don't remember encountering similar issue for anything else.
Comment 8 Patrick Silva 2025-03-13 13:47:54 UTC
Can reproduce with Display Configuration KCM.

Operating System: Arch Linux 
KDE Plasma Version: 6.3.3
KDE Frameworks Version: 6.11.0
Qt Version: 6.8.2
Graphics Platform: Wayland