this post was submitted on 19 Mar 2025
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Tried it again a few months ago when HDR support first dropped in KDE. It didn't work at all. Everything was desaturated and dim. Literally the opposite of what HDR is supposed to do.
I'm giving it another year before I try Linux again. Hopefully the bugs are sorted by then.
Yeah, HDR is one of my main hangups as well. Very interested in moving my living room gaming PC over (the only place I deal with Windows), but I need a lot of things to just work with little to no hassle, and also no hit to performance. I didn't build a very expensive PC for a compromised experience, as much as Windows is regularly a massive PITA.
I've been using Endeavour with KDE and HDR on for almost a year. I had to install the "vk-hdr-layer-kwin6-git" package and now HDR works on desktop and in mpv/smplayer/haruna for both hdr10 and DV content. Games also work, but they require some steam launch arguments which aren't exactly user friendly.
Ideally this will "just work" in The Futureโข...
I'm on EndeavourOS trying to get some Steam games to work with HDR, would you mind pointing me towards some information on these launch arguments you mentioned? I'd like to see if I can get it working. Thanks!
Absolutely! I recommend reading through wiki.archlinux.org/title/KDE#HDR and at the moment I am playing through The Witcher 3 with these launch options I got from someone in a review on protondb.com: "mangohud VKD3D_DISABLE_EXTENSIONS=VK_KHR_present_wait gamescope -f --force-grab-cursor --hdr-enabled -W 3840 -H 2160 -- %command% --launcher-skip". Not everything here is necessary, but AFAIK to get HDR support in Steam games you have to launch the game with gamescope. So be sure you have that installed as well. I played about half of Ghost of Tsushima without HDR before I got it working and noticed the difference right away, but Witcher 3 is a good test because of the in-game HDR settings menu. I'm guessing that menu is unavailable if you don't have HDR correctly configured, so it's easy to see if it works.
As I mentioned, not exactly user friendly! I also have a glitch that happens if my HDR monitor is turned on after boot, or has turned off bc of power saving and I turn it back on. I get artifacting when a program goes fullscreen. My fix is turning off and on HDR on that monitor. Good luck!