Bug 500300

Summary:	Night Light colors drastically different between X11 and Wayland
Product:	[Plasma] kwin	Reporter:	gudvinr+kde
Component:	night color	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED FIXED
Severity:	normal	CC:	nate, xaver.hugl
Priority:	NOR
Version:	6.3.0
Target Milestone:	---
Platform:	Arch Linux
OS:	Linux
Latest Commit:	https://invent.kde.org/plasma/kwin/-/commit/c523fce6c1792969fca36575a2ace43c75f69b8a	Version Fixed In:	6.3.1
Sentry Crash Report:
Attachments:	wayland (night light on) x11 (night light on) x11 (night light off)

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.