# envycontrol > GPU switching utility for Nvidia Optimus laptops. > More information: . - Switch between different GPU modes: `sudo envycontrol {{[-s|--switch]}} {{nvidia|integrated|hybrid}}` - Specify your display manager manually: `envycontrol --dm` - Check current GPU mode: `sudo envycontrol {{[-q|--query]}}` - Reset settings: `sudo envycontrol --reset` - Display help: `envycontrol {{[-h|--help]}}` - Display version: `envycontrol {{[-v|--version]}}`