Raspberry Pi 3關閉Wifi省電模式

樹莓派Raspberry Pi 3預設開啟Wifi的省電模式。手動關閉方式如下：

sudo /sbin/iwconfig wlan0 power off
iw wlan0 get power_save

Power save: off

手動開啟Wifi的省電模式方式如下：

sudo /sbin/iwconfig wlan0 power on
iw wlan0 get power_save

Power save: on

檢查開啟與關閉的時間點可用dmesg：

dmesg | grep -i "power save"

[62292.801398] brcmfmac: brcmf_cfg80211_set_power_mgmt: power save enabled
[62462.349761] brcmfmac: brcmf_cfg80211_set_power_mgmt: power save disabled

參考資料

• Problem: Rpi4 wifi going to sleep mode

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