I’m so done with win11, and currently 12 of my 15 machines are linux anyway, but AFAIK HDR (on nvidia gpu) is still impossible? Are you guys all on AMD or just not using hdr for gaming/media? So instead of relying on outdated info, just asking the pros :)
https://wiki.archlinux.org/title/HDR
Arch wiki says NVIDIA should now work, too.
As of Mesa 25 it should just work. Even if you’re on a distro that doesn’t have it working yet, seems HDR on NVIDIA is not far off, and can be made to work right now if you know how with arch.
For my setup, I literally just enable the setting in the KDE display settings.