Wifi Configuration for Raspberry Pi 2 + RTL8192SU (DWA-131) with Octoprint 0.18

 I used the Raspberry Pi Imager (https://www.raspberrypi.com/software/) to install the newest version of Octoprint (https://octoprint.org/). The new version of Octoprint recommends Python 3.6, but after the re-image of the SD Card, I encountered an issue with WiFi (again...)

This is what I did to resolve it:

 Environment:

  • Raspberry Pi 2 Model B Rev 1.1
  • D-Link System DWA-131 802.11n Wireless N Nano Adapter(rev.A1) [Realtek RTL8192SU]
  • Octoprint version of OctoPi

Symptoms:

After configuring the WiFi network interface, the interface would not come up by itself.

Cause:

It looks like even though the card was configured correctly, it was not starting up on it's own

Resolution:

1) Modify the /boot/octopi-wpa-supplicant.txt

network={
  ssid="SecretNetwork"
  psk="SecretPassword"
}
country=CA # Canada

For some reason, the network wasn't coming online by itself even with the correct PSK, however, because of a lack of logging (or, me finding that logging) I decided to add it the /etc/network/interfaces.d/wlan0 file

In the /etc/network/interfaces.d/wlan0 file

auto wlan0
allow-hotplug wlan0
iface wlan0 inet dhcp


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