Bug 500300 - Night Light colors drastically different between X11 and Wayland
Summary: Night Light colors drastically different between X11 and Wayland
Status: RESOLVED FIXED
Alias: None
Product: kwin
Classification: Plasma
Component: night color (show other bugs)
Version: 6.3.0
Platform: Arch Linux Linux
: NOR normal
Target Milestone: ---
Assignee: KWin default assignee
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2025-02-18 06:32 UTC by gudvinr+kde
Modified: 2025-02-18 16:07 UTC (History)
2 users (show)

See Also:
Latest Commit: https://invent.kde.org/plasma/kwin/-/commit/c523fce6c1792969fca36575a2ace43c75f69b8a
Version Fixed In: 6.3.1
Sentry Crash Report:

Attachments
wayland (night light on) (2.04 MB, image/jpeg)
2025-02-18 06:32 UTC, gudvinr+kde 		Details
x11 (night light on) (2.23 MB, image/jpeg)
2025-02-18 06:33 UTC, gudvinr+kde 		Details
x11 (night light off) (2.97 MB, image/jpeg)
2025-02-18 06:33 UTC, gudvinr+kde 		Details
View All Add an attachment

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Description gudvinr+kde 2025-02-18 06:32:18 UTC 
SUMMARY

When Night Light kicks in, it is noticeably different on Wayland than on X11.

I don't care which one is "correct" but I expect at least some resemblance of similarity.
Compared to MR#6358 (https://invent.kde.org/plasma/kwin/-/merge_requests/6358), where difference is subtle, I am having extreme difference.


STEPS TO REPRODUCE
1. Turn on night color
2. Switch session

OBSERVED RESULT

Colors have much more deeper red tint on wayland.

EXPECTED RESULT

Colors have similar temperature when night light temperature is the same.

SOFTWARE/OS VERSIONS
Operating System: Arch Linux 
KDE Plasma Version: 6.3.0
KDE Frameworks Version: 6.11.0
Qt Version: 6.8.2
Kernel Version: 6.13.2-arch1-1 (64-bit)
Graphics Platform: X11
Graphics Processor 1: AMD Radeon RX Vega M GL Graphics
Comment 1 gudvinr+kde 2025-02-18 06:32:42 UTC 
Created attachment 178505 [details]
wayland (night light on)
Comment 2 gudvinr+kde 2025-02-18 06:33:00 UTC 
Created attachment 178506 [details]
x11 (night light on)
Comment 3 gudvinr+kde 2025-02-18 06:33:16 UTC 
Created attachment 178507 [details]
x11 (night light off)
Comment 4 Zamundaaa 2025-02-18 15:21:10 UTC 
This should be fixed in 6.3.1 with https://invent.kde.org/plasma/kwin/-/merge_requests/7157
Comment 5 gudvinr+kde 2025-02-18 15:25:32 UTC 
(In reply to Zamundaaa from comment #4)
> This should be fixed in 6.3.1 with
> https://invent.kde.org/plasma/kwin/-/merge_requests/7157

I don't use ICC nor HDR. Does MR cover this too?
Comment 6 Zamundaaa 2025-02-18 16:07:05 UTC 
Yes, it does. Without a color profile at all, it was applied far too strong.