We're looking for a user researcher to understand the needs of developers and designers. Is this you or someone you know? Check out the post: https://mzl.la/2IGzdXS

PowerManager.cpuSleepAllowed Redirect 1

This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.

This API is available on Firefox OS for internal applications only.


The cpuSleepAllowed property determines if the device's CPU will sleep after the screen is disabled. Setting this attribute to false will prevent the device from entering the suspend state.


var isTheCPUAllowedToSleep = navigator.mozPower.cpuSleepAllowed


Return a boolean.


Not part of any specification.

See also

Document Tags and Contributors

Last updated by: Sheppy,