https://bugs.kde.org/show_bug.cgi?id=523586
Bug ID: 523586
Summary: Night Light transition extremely slow on 6K screens
Classification: Plasma
Product: kwin
Version First unspecified
Reported In:
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: night color
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
Created attachment 194657
--> https://bugs.kde.org/attachment.cgi?id=194657&action=edit
Night Light settings
DESCRIPTION
Since upgrading from a 4K to a 6K external monitor (both 60Hz), I've noticed
that the transition to Night Light is painfully slow on the 6K display.
STEPS TO REPRODUCE
1. Set the Night Light transition time to 1 minute
2. Set the start time 1 minute from now
3. Observe the transition
OBSERVED RESULT
Reduced system responsiveness
EXPECTED RESULT
Smooth transition with near-zero CPU impact, because the machine can drive much
heavier graphics workloads (e.g.
https://webglsamples.org/aquarium/aquarium.html at 60 fps for 1000 objects).
SOFTWARE/OS VERSIONS
Operating System: Kubuntu 26.04 LTS
KDE Plasma Version: 6.6.5
KDE Frameworks Version: 6.24.0
Qt Version: 6.10.2
Kernel Version: 7.0.0-28-generic (64-bit)
Graphics Platform: Wayland
Processors: 20 × 12th Gen Intel® Core™ i7-12700H
Memory: 64 GiB of RAM (62.5 GiB usable)
Graphics Processor 1: Mesa Intel® Iris® Xe Graphics
Graphics Processor 2: NVIDIA GeForce RTX 3050 Ti Laptop GPU/PCIe/SSE2
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