If deleting the file does not work, or if you prefer to keep your other settings, you can manually edit the file to match your monitor's resolution.
Force windowed mode through Steam to see if the game launches. Right-click the game in your Steam Library Properties Launch Options +fullscreen 0 Technical Troubleshooting Serious Sam 3 - Cannot set display mode : r/linux_gaming
The settings file might have corrupt or incompatible video parameters.
The story will resume once the display mode issue is resolved, and Sam can get back to what he does best: kicking alien butt!
Serious Sam 3 Cannot Set Display Mode _verified_ Jun 2026
If deleting the file does not work, or if you prefer to keep your other settings, you can manually edit the file to match your monitor's resolution.
Force windowed mode through Steam to see if the game launches. Right-click the game in your Steam Library Properties Launch Options +fullscreen 0 Technical Troubleshooting Serious Sam 3 - Cannot set display mode : r/linux_gaming serious sam 3 cannot set display mode
The settings file might have corrupt or incompatible video parameters. If deleting the file does not work, or
The story will resume once the display mode issue is resolved, and Sam can get back to what he does best: kicking alien butt! serious sam 3 cannot set display mode