https://bugs.kde.org/show_bug.cgi?id=482780

Dāvis <davis...@gmail.com> changed:

           What    |Removed                     |Added
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                 CC|                            |davis...@gmail.com

--- Comment #1 from Dāvis <davis...@gmail.com> ---
Created attachment 166726
  --> https://bugs.kde.org/attachment.cgi?id=166726&action=edit
HDR example with washed out colors

I have very similar issue but I'm using AMD Vega 64 with Acer PREDATOR X34
monitor.

When I set HDR mode in monitor settings and check "Enable HDR" in Display
Configuration then all colors look washed out like missing saturation. This is
most noticeable in System Setting icons on right side. When looking at
photos/videos then it's not really that noticeable. YouTube videos look fine
but it could be it's just not noticable due to not having a reference. Not sure
if there is some test for this other than eyeballing :D I attached photos with
HDR on and HDR off and while not that noticeable in photos you can kinda see it
looks worse with HDR. For example put both images next to each other and look
at wallpaper red cloud color at top.

I'm using Display Port and linux kernel 6.7.8 so it shouldn't be this issue
https://gitlab.freedesktop.org/drm/amd/-/issues/3079 which is claimed to be
fixed.

Also for me that SDR Color Intensity slider doesn't work at all, it does
nothing - no visual change between 0% and 100%.

I also tried mpv --target-prim=bt.709 but didn't see any difference either.

Here's some info:

> $ kscreen-doctor -o
> Output: 1 DP-2
>         enabled
>         connected
>         priority 1
>         DisplayPort
>         Modes:  0:3440x1440@180*!  1:3440x1440@144  2:3440x1440@60  
> 3:3840x2160@60  4:3840x2160@60  5:3840x2160@30  6:3840x2160@30  
> 7:3840x2160@25  8:3840x2160@24  9:3840x2160@24  10:3440x1440@120  
> 11:3440x1440@100  12:3440x1440@96  13:3440x1440@85  14:3440x1440@75  
> 15:3440x1440@72  16:3440x1440@60  17:2560x1080@60  18:2560x1080@60  
> 19:2560x1080@50  20:1920x1200@180  21:1920x1080@60  22:1920x1080@60  
> 23:1920x1080@60  24:1920x1080@50  25:1920x1080@30  26:1920x1080@30  
> 27:1920x1080@25  28:1920x1080@24  29:1920x1080@24  30:1600x1200@180  
> 31:1680x1050@60  32:1280x1024@75  33:1280x1024@60  34:1440x900@60  
> 35:1280x960@60  36:1280x800@60  37:1152x864@75  38:1280x720@60  
> 39:1280x720@60  40:1280x720@60  41:1280x720@50  42:1024x768@75  
> 43:1024x768@70  44:1024x768@60  45:832x624@75  46:800x600@75  47:800x600@72  
> 48:800x600@60  49:800x600@56  50:720x576@50  51:720x576@50  52:720x480@60  
> 53:720x480@60  54:720x480@60  55:720x480@60  56:640x480@75  57:640x480@73  
> 58:640x480@67  59:640x480@60  60:640x480@60  61:640x480@60  62:720x400@70  
> 63:1600x1200@60  64:1280x1024@60  65:1024x768@60  66:1920x1200@60  
> 67:2560x1440@60  68:1920x1080@60  69:1600x900@60  70:1368x768@60  
> 71:1280x720@60
>         Geometry: 0,0 2294x960
>         Scale: 1.5
>         Rotation: 1
>         Overscan: 0
>         Vrr: Never
>         RgbRange: unknown
>         HDR: enabled
>                 SDR brightness: 250 nits
>                 SDR gamut wideness: 100%
>                 Peak brightness: 542 nits
>                 Max average brightness: 400 nits
>                 Min brightness: 0 nits
>         Wide Color Gamut: enabled
>         ICC profile: none


> # cat /sys/kernel/debug/dri/1/crtc-0/amdgpu_current_colorspace
> BT2020_RGB

> # cat /sys/kernel/debug/dri/1/crtc-0/amdgpu_current_bpc
> Current: 8


> Block 0, Base EDID:
>   EDID Structure Version & Revision: 1.4
>   Vendor & Product Identification:
>     Manufacturer: ACR
>     Model: 2223
>     Serial Number: 277881511
>     Made in: week 9 of 2021
>   Basic Display Parameters & Features:
>     Digital display
>     Bits per primary color channel: 10
>     DisplayPort interface
>     Maximum image size: 80 cm x 35 cm
>     Gamma: 2.20
>     DPMS levels: Off
>     Supported color formats: RGB 4:4:4, YCrCb 4:4:4, YCrCb 4:2:2
>     First detailed timing includes the native pixel format and preferred 
> refresh rate
>     Display is continuous frequency
>   Color Characteristics:
>     Red  : 0.6884, 0.3095
>     Green: 0.2578, 0.6699
>     Blue : 0.1474, 0.0615
>     White: 0.3134, 0.3291

> Block 1, CTA-861 Extension Block:
>   Revision: 3
>   Underscans IT Video Formats by default
>   Basic audio support
>   Supports YCbCr 4:4:4
>   Supports YCbCr 4:2:2
>   Native detailed modes: 1
>   Video Data Block:
> ...
> Colorimetry Data Block:
>     xvYCC601
>     xvYCC709
>     BT2020YCC
>     BT2020RGB
>   HDR Static Metadata Data Block:
>     Electro optical transfer functions:
>       Traditional gamma - SDR luminance range
>       SMPTE ST2084
>     Supported static metadata descriptors:
>       Static metadata type 1
>     Desired content max luminance: 110 (541.702 cd/m^2)
>     Desired content max frame-average luminance: 96 (400.000 cd/m^2)
>   Video Capability Data Block:
>     YCbCr quantization: Selectable (via AVI YQ)
>     RGB quantization: Selectable (via AVI Q)
>     PT scan behavior: Always Overscanned
>     IT scan behavior: Always Overscanned
>     CE scan behavior: Always Overscanned

> Failures:
>  Block 1, CTA-861 Extension Block:
>   Colorimetry Data Block: Reserved bits MD0-MD3 must be 0.
>   Video Capability Data Block: IT video formats are always overscanned, but 
> bit 7 of Byte 3 of the CTA-861 Extension header is set to underscanned.
> EDID conformity: FAIL


SOFTWARE/OS VERSIONS
KDE Plasma Version: 6.0.1
KDE Frameworks Version: 6.0.0
Qt Version: 6.6.2

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