8.9.1 Wi-Fi Powersave

Wi-Fi Powersave state can be controlled by the kernel or the command line. To change the default Powersave state, CONFIG_CFG80211_DEFAULT_PS can be defined to enable Powersave while the WLAN interface is being initialized, or undefined to disable Powersave at initialization. To control Powersave manually after the WLAN interface is initialized, use the iw tool.

$ iw dev wlan0 set power_save on

Note: The Powersave mode is disabled by default for AP and P2P mode.

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