4.10 Enabling the Power Save Mode

Wi-Fi® Power Save mode can be controlled either by the kernel or through the command line. To change the default Power Save mode, follow any of the following:

• Define CONFIG_CFG80211_DEFAULT_PS to enable power save during WLAN interface initialization.
• Undefine CONFIG_CFG80211_DEFAULT_PS to disable power save during initialization.

Wi-Fi® Power Save mode can be controlled either by the kernel configuration or through the command line. Follow these steps to change the default Power Save mode or to manually control it:

• Define CONFIG_CFG80211_DEFAULT_PS in the kernel configuration to enable Power Save mode during WLAN interface initialization.
• Undefine CONFIG_CFG80211_DEFAULT_PS in the kernel configuration to disable Power Save mode during WLAN interface initialization.

To manually control the Power Save mode after initializing the WLAN interface, use the iw tool with the following command:

iw dev wlan0 set power_save on