https://bugs.kde.org/show_bug.cgi?id=508350
Bug ID: 508350
Summary: With HDR enabled switching to a TTY and back makes
colors saturate and crush
Classification: Plasma
Product: kwin
Version First 6.4.4
Reported In:
Platform: Neon
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: platform-drm
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Target Milestone: ---
Created attachment 184150
--> https://bugs.kde.org/attachment.cgi?id=184150&action=edit
phone photos of the screen hopefully showing the colors before and after
reproducing the bug
SUMMARY
With HDR enabled colors look wrong in that they heavily saturate and crush. I
first noticed this on my Arch linux system where I routinely run kscreen-doctor
--dpms off and occasionally I would wake the display up and see saturated and
crushed colors. However, switching to TTY and back looks like the same issue
and is easier to reproduce. I've also been able to reproduce on Neon.
STEPS TO REPRODUCE
1. Boot Neon Testing edition live cd
2. Enable HDR in display settings
3. Switch to a tty and back
OBSERVED RESULT
Colors crush and saturate
EXPECTED RESULT
Colors stay the same
SOFTWARE/OS VERSIONS
KDE Plasma Version: 6.4.80
KDE Frameworks Version: 6.18.0
Qt Version: 6.9.1
ADDITIONAL INFORMATION
I am also able to reproduce on my archlinux system
KDE Plasma Version: 6.4.4
KDE Frameworks Version: 6.17.0
Qt Version: 6.9.1
But was not able to reproduce on Neon User edition
KDE Plasma Version: 6.4.3
KDE Frameworks Version: 6.16.0
Qt Version: 6.9.1
Screenshots taken while the bug is active look fine. To put colors back to
normal just toggle HDR off and on.
kscreen-doctor -o
Output: 1 DP-1 81a767ee-6d32-4beb-9768-8e23cb774ec2
enabled
connected
priority 1
DisplayPort
replication source:0
Modes: 1:2560x1440@144*! 2:2560x1440@120 3:2560x1440@100
4:2560x1440@60 5:1920x1200@144 6:1920x1080@75 7:1920x1080@60 8:1920x1080@60
9:1920x1080@60 10:1920x1080@50 11:1600x1200@144 12:1680x1050@60
13:1600x900@60 14:1280x1024@75 15:1280x1024@60 16:1440x900@144
17:1280x800@60 18:1152x864@60 19:1280x720@60 20:1280x720@60 21:1280x720@60
22:1280x720@50 23:1024x768@75 24:1024x768@60 25:800x600@75 26:800x600@60
27:720x480@60 28:720x480@60 29:640x480@75 30:640x480@60 31:640x480@60
32:640x480@60 33:1600x1200@60 34:1280x1024@144 35:1024x768@144
36:1920x1200@60 37:1280x800@144 38:1920x1080@144 39:1600x900@144
40:1368x768@60 41:1368x768@144 42:1280x720@144
Geometry: 0,0 2560x1440
Scale: 1
Rotation: 1
Overscan: 0
Vrr: Automatic
RgbRange: Automatic
HDR: enabled
SDR brightness: 343 nits
SDR gamut wideness: 30%
Peak brightness: 400 nits, overridden with: 400 nits
Max average brightness: 344 nits
Min brightness: 0.0984 nits
Wide Color Gamut: enabled
ICC profile: none
Color profile source: sRGB
Color power preference: prefer efficiency and performance
Brightness control: supported, set to 100% and dimming to 100%
DDC/CI: allowed
Color resolution: automatic (10), range: [8; 16] bits per color
Allow EDR: unsupported
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