https://bugs.kde.org/show_bug.cgi?id=495268
Bug ID: 495268
Summary: Colours washed out in sdr and hdr mode
Classification: Plasma
Product: kwin
Version: 6.2.1
Platform: Fedora RPMs
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: colour-management
Assignee: kwin-bugs-n...@kde.org
Reporter: r.hessel....@gmail.com
Target Milestone: ---
Created attachment 175160
--> https://bugs.kde.org/attachment.cgi?id=175160&action=edit
Drm info hdr off
SUMMARY
Up until now things were working fine, so it might be a recent update or I
tripped something.
In sddm with hdr mode disabled, and a reboot, colours look fine. But the moment
I log into plasma all the colours are washed out, even though hdr is disabled.
Turning the TV off and on it seems to think it's still in hdr mode. Even
powering it off at the wall has no effect.
Same process, but hdr on, fresh reboot, sddm looks perfectly fine, log in,
colours are washed out, just not as badly. The funny thing is, this was
working. And I haven't adjusted hdr brightness offset at all (locked at 350%).
Kernel versions make no difference.
STEPS TO REPRODUCE
1. Have hdr screen connected. (hdr on or off)
2. Log in to plasma.
OBSERVED RESULT
Washed out colours regardless of hdr enabled, and regardless of fresh reboots
and screen power cycles.
EXPECTED RESULT
Colours should not be washed out, regardless of hdr mode.
Suspect: screen is not actually being switched out of hdr, and something else
as well, otherwise atleast hdr would look fine.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Fedora 40, kernel 6.11.4-201.fc40.x86_64
KDE Plasma Version: 6.2.1
KDE Frameworks Version: 6.7.0
Qt Version: 6.7.2
ADDITIONAL INFORMATION
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