https://bugs.kde.org/show_bug.cgi?id=505875
Bug ID: 505875
Summary: ICC color profile is applied incorrectly, screen is
tinted red
Classification: Plasma
Product: kwin
Version First 6.4.0
Reported In:
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: colour-management
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
SUMMARY
The ICC color profile I use for my laptop looks wrong on KDE Wayland when
compared to KDE X11 (with xcalib) and GNOME Wayland. The screen looks to be
tinted red and is most noticeable looking at black colors.
STEPS TO REPRODUCE
1. Launch a Plasma Wayland session.
2. Open Display Configuration.
3. Set Color profile to ICC profile with an user provided ICC profile.
4. Set Color accuracy to Prefer Accuracy.
5. Apply changes.
OBSERVED RESULT
The monitor is tinted red which is not very apparent on first glance but can be
seen and becomes most noticeable on darker images, especially on pure black
backgrounds.
EXPECTED RESULT
The monitor is calibrated fine like how it is on Plasma X11 (with xcalib) and
Gnome Wayland. Pure blacks do not have a red tint.
SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 6.4.0
KDE Frameworks Version: 6.15.0
Qt Version: 6.9.1
Kernel Version: 6.15.2-arch1-1 (64-bit)
Graphics Platform: Wayland
Processors: 12 × Intel® Core™ i7-8750H CPU @ 2.20GHz
Memory: 16 GiB of RAM (15.5 GiB usable)
Graphics Processor 1: Intel® UHD Graphics 630
Graphics Processor 2: NVIDIA GeForce GTX 1050 Ti
Manufacturer: ASUSTeK COMPUTER INC.
Product Name: Strix 17 GL703GE
System Version: 1.0
ADDITIONAL INFORMATION
1. I first noticed this issue when switching to the Plasma 6.0 release. Pre-6.0
Wayland with colord used to color manage properly.
2. Night light is disabled.
3. Red tint becomes less visible (but still exists) when lowering the color
resolution to 6 bits per color.
4. Red tint becomes more noticeable when using prefer efficiency.
5. Color intensity works but doesn't remove the tint at any position.
EDID information
# card0-eDP-1 #######################
Block 0, Base EDID:
EDID Structure Version & Revision: 1.4
Vendor & Product Identification:
Manufacturer: CMN
Model: 5959
Made in: week 16 of 2016
Basic Display Parameters & Features:
Digital display
Bits per primary color channel: 8
DisplayPort interface
Maximum image size: 38 cm x 21 cm
Gamma: 2.20
Supported color formats: RGB 4:4:4
First detailed timing includes the native pixel format and preferred
refresh rate
Color Characteristics:
Red : 0.6777, 0.3085
Green: 0.2636, 0.6777
Blue : 0.1513, 0.0595
White: 0.3134, 0.3291
Established Timings I & II: none
Standard Timings: none
Detailed Timing Descriptors:
DTD 1: 1920x1080 120.000000 Hz 16:9 135.840 kHz 305.640000 MHz
(381 mm x 214 mm)
Hfront 100 Hsync 66 Hback 164 Hpol N
Vfront 6 Vsync 10 Vback 36 Vpol N
Alphanumeric Data String: 'N173HHE-G32'
Alphanumeric Data String: 'CMN'
Alphanumeric Data String: 'N173HHE-G32'
Checksum: 0x5f
----------------
EDID conformity: PASS
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