https://bugs.kde.org/show_bug.cgi?id=512496
Bug ID: 512496
Summary: sRGB Colour Intensity seems to be inverted
Classification: Plasma
Product: kwin
Version First 6.5.2
Reported In:
Platform: Kubuntu
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: colour-management
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
I had a look around and couldn't find anything existing that's related.
I mainly use Kubuntu LTS on my more capable machines (so still on Plasma 5),
but for a few machines I'm using Plasma 6 from non-LTS Kubuntu. I recently
noticed the 'sRGB colour intensity' slider in the Display Configuration.
I calibrate all my displays, so in each case a colour profile is used. When the
'sRGB colour intensity' slider is set to 100%, it seems noticeable _less_
intense/saturated than when the slider is set to 0%, which seems back-to-front
to me.
Selecting 'Prefer colour accuracy' or 'Prefer efficiency' appears to make no
difference.
I'm observing this on a variety of systems:
* Intel Alder Lake iGPU with built-in screen.
* AMD Stoney Ridge with Vega iGPU on built-in screen.
* AMD Barts (Radeon HD 6870) desktop GPU on desktop monitor.
I don't think any of these displays are HDR-capable. Is it the case that not
many people use colour profiles?
1. Enter Display Configuration settings
2. Use a colour profile
3. Observe sRGB colour intensity/saturation at 0% is greater than at 100%
Linux/KDE Plasma:
KDE Plasma Version: Currently Plasma 6.5.2 and 6.5.3, but possibly since
whenever this slider was introduced.
KDE Frameworks Version: 6.20.0
Qt Version: 6.9.2
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