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raspberry pi 3 wifi のpower management について

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rasberry pi 3 でのwifi power managementの表示

$ iw wlan0 get power_save #power managementの状態表示
$ iw wlan0 set power_save off #power managementをオフにする

OS起動時に wifiのpower managementをoffにする

/etc/rc.local
iw wlan0 set power_save off # exit 0の前に挿入
exit 0

raspi-configの設定

sudo raspi-config
"Wait for Network at Boot" -> " Slow Wait for network connection before completing boot"
にしないと/etc/rc.localは動作しない。
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