FSR working on CoI on Linux ?

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jerome · 17 days ago

Hi all,

I've been trying to get FSR upscaling working cleanly for CoI on Linux (Arch/Hyprland via Omarchy, RX 9070 XT, output at 3840x2160 on a 4K TV) and wanted to check if anyone has cracked this, or if a dev could weigh in.

Setup: Running through Steam + gamescope as the compositor, GE-Proton.

What I've tried:

  1. Gamescope's own FSR (-w 2560 -h 1440 -W 3840 -H 2160 -F fsr): works technically, but the whole composited frame — game world and UI/text — gets upscaled together as one flat image. Result: 3D scenery looks fine, but menus/text/icons get visibly blurry and artifact-y. This seems to be an inherent limitation of compositor-level FSR 1.0 on a UI-heavy management game like this one, rather than a bug.
  2. Wine-level FSR (WINE_FULLSCREEN_FSR + WINE_FULLSCREEN_FSR_CUSTOM_MODE, which is supposed to let DXVK upscale independently of the compositor): this never activates under gamescope. Checked via DXVK_LOG_LEVEL=info — DXVK reports extFullScreenExclusive: 0 and uses the [Gamescope WSI] swapchain path instead of the standard presenter, so the exclusive-fullscreen transition that triggers the Wine FSR hack never happens. Confirmed via logs, not a guess.
  3. Running without gamescope (to let DXVK do a real exclusive fullscreen switch): the game fails to launch — logs show xalia.exe initializing a Vulkan device, then the whole process tree just gets torn down before Captain of Industry.exe itself ever starts. No crash dump, no Wine exception logged.

Question: Is there a known way to get FSR (or any upscaler) working on CoI on Linux without this UI-artifact tradeoff — e.g. does the engine have any native/in-game upscaling option on the roadmap, or has anyone found a launch config that avoids the gamescope-vs-Wine-FSR conflict? Happy to share full logs if useful.

Thanks!

Jérôme

JustADragon · 2 days ago

oh hey, another linux user

so, as far as i know, no. Though it's to be expected since there's like, 5 people on the forums that are running linux, and that includes me. linux specific documentation is basically nonexistant no matter the topic

you might have better luck checking guides for other games, COI runs on unity i think

Alternately, lead the charge here. run your own experiments and community research programs! i mean, why not? considering the hub is basically all mods and bug reports rn it's practically a freebee to become a community fegure

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