Bug 453594

Summary:	RGB range setting missing
Product:	[Applications] systemsettings	Reporter:	Ovear <ovearj>
Component:	kcm_kscreen	Assignee:	kscreen-bugs-null <kscreen-bugs-null>
Status:	RESOLVED WORKSFORME
Severity:	normal	CC:	nate, plasma-bugs
Priority:	NOR
Version First Reported In:	5.24.5
Target Milestone:	---
Platform:	Arch Linux
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:

Description Ovear 2022-05-09 19:03:02 UTC

SUMMARY
***
Hi,
I am using KDE 5.24.5(x11) with sddm, but "RGB range" is missing in screen settings which seems support by KDE a years ago.

The intel drvier misconfig RGB range and needs to set manually, and "xrandr --set "Broadcast RGB"" workaround confirms works.

Thanks
*** 


STEPS TO REPRODUCE
1. Open screen setting
2. No "RGB range" option
3. xrandr quirk to set "RGB range" works.

OBSERVED RESULT
"RGB range" option missing


EXPECTED RESULT
"RGB range" option exist

SOFTWARE/OS VERSIONS
KDE Plasma Version: 5.24.5
KDE Frameworks Version: 5.93.0
Qt Version: 5.15.3
Kernel Version: 5.17.5-arch1-1 (64-bit)
Graphics Platform: X11
Graphics Processor: Mesa Intel® UHD Graphics 630

Comment 1 Nate Graham 2022-05-10 15:44:01 UTC

Does it work on Wayland? I believe this is a Wayland-only feature.

Comment 2 Ovear 2022-05-11 11:22:55 UTC

Hi,
Oh, i didn't notice this is a wayland only feature. Tested on wayland session, and perform as excpeted. 
Is that possible to support this feature on X11 session too? It's really helpful when grphic card drvier choose wrong rgb range.
Thanks

Comment 3 Nate Graham 2022-05-11 12:49:44 UTC

I don't think so, sorry. It's one of those things that really only works well on Wayland. Give the Wayland session a try, you may find that it works well and there are other goodies too!