# steamosctl > Control the SteamOS system. > More information: . - Change to desktop mode: `steamosctl switch-to-desktop-mode` - Change to gamemode: `steamosctl switch-to-game-mode` - Change whether the system opens gamemode or desktop during login: `steamosctl set-default-login-mode {{game|desktop}}` - Get currently used CPU scheduler: `steamosctl get-cpu-scheduler` - Set the system to use a specific CPU scheduler: `steamosctl set-cpu-scheduler {{none|lavd|...}}` - Display available desktop sessions: `steamosctl get-valid-desktop-sessions` - Set the the default desktop session: `steamosctl set-default-desktop-session {{plasma.desktop|plasmax11.desktop|...}}` - Display help: `steamosctl`