Quote:
Originally Posted by John F
Isn't there a similar method used for "automatically sleep/shutdown after X minutes"?
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Yes, but in that situation the cpu is already running.
When the reader is asleep then the cpu is not running. Or perhaps more properly, it's semi running in a low power mode where it's not doing all of the regular stuff like paying attention to the page turn buttons or taps and swipes on the screen, but it does wake up when the power button is pressed or the magnet sensor senses the cover has been opened.