WIFI keeps turning off/forgetting its settings

[rapidfire]

quite simple problem.
i setup the wifi and everything works fine.
but if it isnt used for a while it disconnects and never reconnects even after a reboot.

if i go back into the wifi settings after this has happened, its all blank as if ive never entered any settings before.

how can i solve this issue please?

retropie 4.2
pi3 b
using internal wifi on the pi
connected to netgear nighthawk router
using wpa2 psk
hidden ssid

[backstander]

@rapidfire
I believe the WiFi connection information is stored in /etc/wpa_supplicant/wpa_supplicant.conf

# RETROPIE CONFIG START
network={
        ssid="???"
        psk="password"
}

You might have to add more information about this "hidden ssid" like described here:
https://www.thehecklers.org/2015/02/27/how-to-connect-raspberry-pi-to-hidden-ssid/

[backstander]

Actually, have a look at this document:
https://retropie.org.uk/docs/Wifi/#hidden-ssid

I think you need to add wpa-scan-ssid 1