Using Ectool

ectool is a utility that is used to interface with the ChromeOS Embedded Controller. It is used to communicate with the embedded controller from userspace and vice versa.



Run ectool help for a full list of commands.

Some common uses of ectool include:

  • Accessing the EC console: ectool console
  • Controlling the fan with ectool fanduty <percent>
  • Set the keyboard backlight in devices that have it: ectool pwmsetkblight <percent>
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