When using gamescope HDR colors are washed out

[Seimus]

The non git version of gamescope is working fine. I run it to have HDR enable for steam games as well GoG games using HGL.

gamescope --version
[gamescope] [Info]  console: gamescope version 3.16.3+ (gcc 14.2.1)

There is something wrong as well with you command.

gamescope -w 3840 -h 2160 -f -r 117.0 --expose-wayland --adaptive-sync --force-grab-cursor --hdr-enabled --mangoapp – %command%

@Stewe002

Monitor-1: HDMI-A-1 model: LG (GoldStar) TV SSCR2 serial: <filter>
built: 2022 res: mode: 3840x2160 hz: 120 scale: 100% (1) dpi: 61 gamma: 1.2
size: 1600x900mm (62.99x35.43") diag: 1836mm (72.3") ratio: 16:9 modes:
max: 3840x2160 min: 720x400

The freq should be set to 120, as is reported by your monitor and not 117, after the last gamescope option you need to put -- and not -

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Linux & HDR | KDE settings & Gaming experience

Hey all, After getting myself an AMD GPU, I felt more confident to try out HDR. And I was positively surprised, how good HDR is actually working on its current state on Linux. Saying that HDR on Linux has still a long way to go. BUT! Is totally usable and specifically on Desktop usage better than the Windows implementation from my view point. The point of this Topic is to discuss HDR experience and provide if so possible best settings for non-HDR + HDR settings in KDE. Keep in mind with bellow…

Are you sure HDR is really turned on in the GAME? And what game did you test with, what game has a problem for you?

Because this sounds to me HDR is not running and what you are seeing is just SDR content nested into HDR without any additional tuning.