The community-made compatibility layer Proton-CachyOS has a new release out with more advancements for running Windows games on Linux / SteamOS.
Since Valve’s Proton is open source, anyone can spin their own version of it.
Confused? Check out the GamingOnLinux Guide to all the different Proton versions.
Proton-CachyOS includes a lot of extras on top of Valve’s Proton, based on their testing code and various patches (so in some ways it can be more unstable).
You don’t need to be using CachyOS for it either.
A big one for this update is automatic HDR detection and enablement.
No more needing to use various launch options across different games.
Proton-CachyOS version 11.0-20260601 full changelog:
Source: GitHub
Want to grab it? Follow all the same steps as in the GE-Proton guide here on GamingOnLinux, you just pick Proton-CachyOS instead.
It’s really that simple!
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**📚 Original Source:**
[Proton-CachyOS update brings automatic HDR, Wayland improvements and more bug fixes](https://www.gamingonlinux.com/2026/06/proton-cachyos-update-brings-automatic-hdr-wayland-improvements-and-more-bug-fixes/)
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