Linux Support

KSP2 Redux can run on Linux through Proton. This page focuses on launching and troubleshooting the game itself.

Steam Launch Required

If you are using the Linux version of the Updater, open Settings and enable Launch through Steam if you want to be able to launch the game from the Updater.

Recommended Setup

• Add or launch Redux through Steam.
• Force a Proton compatibility setup for the game.
• If the game is unstable at startup, start with windowed launch options first.

Reported working Proton versions include:

• GE-Proton
• GE-Proton 10-27
• Proton Experimental
• Proton 10

If one Proton version gives video or startup issues, try GE-Proton first.

Launch Options That Help

Some Linux users reported better stability when forcing windowed startup.

Recommended launch arguments to try:

-popupwindow

Other reported working options:

-window-mode exclusive -screen-fullscreen 0

Notes:

• -popupwindow was reported to reduce startup crashes on some systems.
• Some users needed the game to start windowed first, even if it later switched into fullscreen successfully.
• If the game crashes immediately or opens to a black screen, test one of the options above before changing anything else.

Known Working Reports

The following Linux environments were reported to work by community members:

• Arch Linux with Hyprland using GE-Proton
• Nobara using GE-Proton
• Bazzite / Fedora Atomic using Proton
• Linux Mint 22.3 using GE-Proton 10-27
• Pop!_OS 24 using Proton 10

Troubleshooting

Startup Crashes

Try these steps in order:

1. Force GE-Proton, for example GE-Proton 10-27.
2. Add -popupwindow to launch options.
3. If that does not help, try -window-mode exclusive -screen-fullscreen 0.

Videos or Intro Playback Issues

Some Linux users reported that default Proton builds had trouble with videos, while GE-Proton worked correctly. If the game launches poorly or hangs early, switch Proton versions before deeper troubleshooting.

Reporting Linux Issues

When reporting a Linux-specific problem, include:

• your distro
• desktop environment or window manager
• kernel version
• GPU and driver version
• Proton version
• launch options used