9.00: native Linux executable could hang at startup
The released 9.00 changelog fixes a startup hang under Linux with the non-Steam executable. A neighboring fix covers controllers supplying no input on some Linux setups; neither entry diagnoses every native Linux launch problem. [1]
Controller input has its own fix. [1]
9.00: gamepad map zoom and custom bindings failed
The update fixes map zoom using LT/RT in some gamepad profiles. It separately repairs custom Numpad +/- bindings in the cockpit and while walking. Compare the input and location with the specific repair. [1]
The keyboard repair names both cockpit and walking contexts. [1]
9.00: rare freeze with older saves
The Empire Update fixes a rare game freeze involving older savegames. The release does not identify a user-editable save field or prescribe deleting older saves. [1]
Linux saves need a local launch to migrate to the shared cloud location
Egosoft’s February 2026 cloud change can lose Linux desktop saves and settings if the local migration steps are skipped before playing on another machine. Its notice is updated to say the change has been applied. Restart Steam on the Linux machine, run X4 there, then exit so Steam uploads to the new location. [2]
Documented steps
- After preserving the local files, restart Steam on Linux, launch X4 and exit it so Steam updates the cloud files. [2]
Sources & verification
Platform and version details belong to the individual issue or guide section. A documented workaround may not resolve every case.
- X4: Foundations 9.00 "Empire Update" is Out Now! official-newsRetrieved
- Support for Cross-platform Cloud Saves official-newsRetrieved