protonscr

Regression: Marvel Rivals Won't Launch [Proton 10/Experimental/Hotfix]

protonclosed
ValveSoftware/Proton#8661 · opened 2025-05-05 by abriasffxi · updated 2025-05-05 · 2 comments · github
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Aabriasffxi 2025-05-05 github

Compatibility Report

  • Name of the game with compatibility issues: Marvel Rivals
  • Steam AppID of the game: 2767030

System Information

I confirm:

  • [x] that I haven't found an existing compatibility report for this game.
  • [x] that I have checked whether there are updates for my system available.

Symptoms

Game fails to launch with C+ error. (error in loader.c)

Reproduction

Switch to experimental/hotfix and launch game. Launch options steamdeck=1 %command% to skip launcher.

Aabriasffxi 2025-05-05 github

steam-2767030.log

Kkisak-valve maintainer 2025-05-05 github

Hello @abriasffxi, we're using one issue report per unofficially supported game title, and usually I'd transfer this issue report to #8300, however, this is a mesa regression which was previously evaluated and a fix is queued for a future mesa release. (https://github.com/ValveSoftware/Proton/issues/8300#issuecomment-2847230138)

Launch lines

Upstream links