Bug 438288

Summary:	Nigh Color is disabled when launching nvidia-settings
Product:	[Plasma] kwin	Reporter:	Oleksii Zolotarevskyi <rockingcat>
Component:	general	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED INTENTIONAL
Severity:	normal	CC:	kde, kwin-bugs-null, nate
Priority:	NOR
Version First Reported In:	5.21.5
Target Milestone:	---
Platform:	Neon
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description Oleksii Zolotarevskyi 2021-06-08 19:55:15 UTC

SUMMARY
When I launch nvidia-settings, Night Color on my external screen becomes inactive, although the status icon shows that it is active.
To enable it back again I have to disable and enable it by clicking twice on the status icon.


STEPS TO REPRODUCE
1. Enable Night Color in System Settings
2. Run nvidia-settings

OBSERVED RESULT
Night Color is becomes inactive

EXPECTED RESULT
Night Color keeps active

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: KDE Neon 5.21 User Edition 
KDE Plasma Version: 5.21.5
KDE Frameworks Version: 5.82.0
Qt Version: 5.15.2
Nvidia Driver Version: 460.80

ADDITIONAL INFORMATION
Laptop with Nvidia Optimus, with external screen connected using DisplayPort

Comment 1 David Edmundson 2021-06-12 12:45:39 UTC

Nvidia-settings contains it's own colour correction. It will fight with anything active. There is not much we can do

Comment 2 Oleksii Zolotarevskyi 2021-06-28 19:32:10 UTC

Why this doesn't happen with the internal laptop screen then?

Comment 3 Oleksii Zolotarevskyi 2021-07-03 22:43:13 UTC

There is inconsistency between behaviour on laptop's internal screen and external screen:
- On internal screen the Night Color stays active
- On external screen the Night Color becomes inactive

Moreover, the Night Color status icon in the tray doesn't change the state when the Night Color becomes inactive. This can be misleading.

Comment 4 David Edmundson 2023-11-15 12:26:53 UTC

See #1