Edit /etc/network/interfaces
sudo nano /etc/network/interfaces
Add the following
auto lo iface lo inet loopback iface eth0 inet dhcp allow-hotplug wlan0 auto wlan0 iface wlan0 inet dhcp wpa-ssid "ssid" wpa-psk "password"
I was finding that my Pi was seemingly going to “sleep” and would stop responding
Although the Pi itself doesn’t have a sleep mode, individual devices in Linux (including the network adapters) can
I ran the following to check the WiFI power save mode:
iw wlan0 get power_save
That confirmed power_save mode was indeed turned on for my WiFi so I did the following:
Edited /etc/network/interfaces
sudo nano /etc/network/interfaces
Added wireless-power off after iface wlan0 inet dhcp
Saved, exited and issued the following command
sudo ifdown wlan0 && sudo ifup wlan0
Since then, everything is fine and the network connection stays active, and I’m able to ssh into my Pi after it’s been idle for a while
thingsIforget 