香橙派挂机开发的时候发现隔一段时间wifi自动掉线,不会重连

查看网卡状态

# sudo iwconfig wlan0
huiyi@orangepizeroplus2h5:~$ sudo iwconfig wlan0
[sudo] password for huiyi:
wlan0     IEEE 802.11  ESSID:"Huiyicc"
          Mode:Managed  Frequency:2.452 GHz  Access Point: 44:32:62:0E:DF:24
          Bit Rate=43.3 Mb/s   Tx-Power=31 dBm
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Encryption key:off
          Power Management:on
          Link Quality=70/70  Signal level=-17 dBm
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0

说明:
Power Management是电源管理模式,on是开off是关
这里是开启了

临时关闭

#关闭节能模式
sudo iwconfig wlan0 power off

检查

huiyi@orangepizeroplus2h5:~$ sudo iwconfig wlan0
wlan0     IEEE 802.11  ESSID:"Huiyicc"
          Mode:Managed  Frequency:2.452 GHz  Access Point: 44:32:62:0E:DF:24
          Bit Rate=21.6 Mb/s   Tx-Power=31 dBm
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Encryption key:off
          Power Management:off
          Link Quality=70/70  Signal level=-15 dBm
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0

永久关闭

vim /etc/NetworkManager/conf.d/default-wifi-powersave-on.conf

将wifi.powersave改为2

保存然后reboot