https://bugs.kde.org/show_bug.cgi?id=508138
Bug ID: 508138
Summary: Night light taints screen shots/recordings with heavy
purple/green tint.
Classification: Plasma
Product: kwin
Version First 6.3.5
Reported In:
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: night color
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
Created attachment 183971
--> https://bugs.kde.org/attachment.cgi?id=183971&action=edit
archive containing 6 picture files, 1 video file, and one text file
SUMMARY
Night light produces agreeable colors to my eyes on the screen; however any
video recording or screenshots done with any program done while night light is
active shows very tinted colors.
STEPS TO REPRODUCE
1. Activate Night Light.
2. Make a screenshot or screen recording.
3. Observe said image or video with Night Light disabled.
OBSERVED RESULT
I've attached some images:
-The first three are screenshot pairs taken with Spectacle (a screenshot of two
screenshots), the first of each pair was done with Night Light on, the second
with Night Light off.
-The second three have the same subject, but the images of the Spectacle
windows were taken while Night Light was on.
With the first three it's possible to observe the described tint. It looks like
the pictures are completely missing any yellow (awkward since it's not even an
RGB primary).
It's worth noting that while Night Light itself is active, it's impossible to
see any sign of this issue, that's why there is little to no difference between
the two sides of the second triad of attached photos.
-A screen recording (done with OBS' "Screen capture (PipeWire)") of the first
three photos is also attached
EXPECTED RESULT
Screenshots and screen recordings should bypass completely the Night Light
filter and their colors should not depend on whether Night Light is active or
not.
SOFTWARE/OS VERSIONS
Operating System: NixOS 25.11
KDE Plasma Version: 6.3.5
KDE Frameworks Version: 6.14.0
Qt Version: 6.9.0
Kernel Version: 6.14.8-xanmod1 (64-bit)
Graphics Platform: Wayland
Processors: 12 × AMD Ryzen 5 1600 Six-Core Processor
Memory: 15.5 GiB of RAM
Graphics Processor: NVIDIA GeForce GTX 1080
ADDITIONAL INFORMATION
Pictures were taken with Spectacle;
Video was taken with OBS;
gpu-screen-recorder recordings have the same issue, both when recording via DRM
and via the XDG portal.
HDR is not enabled. The issue appears both with the Built-in color profile and
with no color profile applied.
So far I've encountered this issue on three different monitors; I don't
currently have access to the other two.
Output of `drm_info` is attached.
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