Bug 501901 - Display Configuration KCM flickers while screen brightness is adjusted via systray applet
Summary: Display Configuration KCM flickers while screen brightness is adjusted via sy...
Status: CONFIRMED
Alias: None
Product: systemsettings
Classification: Applications
Component: kcm_kscreen (other bugs)
Version First Reported In: 6.3.3
Platform: Arch Linux Linux
: NOR minor
Target Milestone: ---
Assignee: kscreen-bugs-null@kde.org
URL:
Keywords: regression
Depends on:
Blocks:
 
Reported: 2025-03-23 11:36 UTC by Patrick Silva
Modified: 2025-06-05 11:37 UTC (History)
4 users (show)

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

Attachments
screen recording (557.76 KB, video/webm)
2025-03-23 11:36 UTC, Patrick Silva 		Details
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Description Patrick Silva 2025-03-23 11:36:39 UTC 
Created attachment 179665 [details]
screen recording

STEPS TO REPRODUCE
1. open Display Configuration KCM
2. hover over Brightness and Color applet in the system tray and scroll down/up
3. 

OBSERVED RESULT
Display Configuration KCM flickers during step 2. Please watch the attached screen recording.

EXPECTED RESULT


SOFTWARE/OS VERSIONS
Operating System: Arch Linux 
KDE Plasma Version: 6.3.3
KDE Frameworks Version: 6.12.0
Qt Version: 6.8.2
Graphics Platform: Wayland
Comment 1 Patrick Silva 2025-03-23 11:37:22 UTC 
EXPECTED RESULT
the observed result should not occur
Comment 2 Nate Graham 2025-03-25 22:59:16 UTC 
Hah, can reproduce, and I know why: because the KCM updates the brightness slider in real-time as the brightness is changed, and to do so, it reloads everything on the page, which causes the flicker.
Comment 3 Akseli Lahtinen 2025-06-05 11:37:29 UTC 
Can confirm also this still happens, it should only reload the values, not the whole page.

Operating System: Fedora Linux 42
KDE Plasma Version: 6.4.80
KDE Frameworks Version: 6.15.0
Qt Version: 6.9.0
Kernel Version: 6.15.0-61.fc43.x86_64 (64-bit)
Graphics Platform: Wayland
Processors: 12 × AMD Ryzen 5 3600 6-Core Processor
Memory: 16 GiB of RAM (15.5 GiB usable)
Graphics Processor: AMD Radeon RX 6600