Linux Coop Fix

Fixes co-op multiplayer issues for Linux players caused by a broken Galaxy SDK initialization.

The Problem

On Linux systems running glibc 2.41+ (common on newer distros like Ubuntu 24.10, Arch, etc.), Stardew Valley fails to load the Galaxy SDK on startup. This causes the game to hang on "Connecting to online services..." and makes co-op completely unavailable — even via Steam.

The root cause is that the Galaxy .so files ship with an executable GNU_STACK header, which glibc 2.41 no longer allows.

What This Mod Does

On first launch, the mod patches the Galaxy .so files directly to remove the executable stack flag. After a restart, the Galaxy SDK loads correctly and co-op works again.

No external tools required (no patchelf needed)
The patch is only applied once and remembered
On Windows and macOS the mod does nothing

Requirements

SMAPI 4.0.0 or later
Stardew Valley 1.6+
Linux with glibc 2.41+ (the mod has no effect on other systems)

Installation

Install SMAPI
Download this mod and unzip it
Place the LinuxCoopFix folder into your Mods folder
Launch the game via SMAPI
Restart the game once after the first launch

Notes

If co-op still does not work after restarting, check your SMAPI log for errors from [Linux Coop Fix]
Your SMAPI log is located at ~/.config/StardewValley/ErrorLogs/SMAPI-latest.txt
You can upload your log at smapi.io/log for easier reading

LinuxCoopFix