I would like to connect my RPi3 with wifi attached. I can scan all APs in my office using command "iwlist wlan0 scan". But I can't find IP address at response of ifconfig wlan0. I can connect to an AP using name/password at Windows. How can I connect to that AP and get IP address using DHCP. I set my /etc/network/interfaces:

auto wlan0
allow-hotplug wlan0
iface wlan0 inet dhcp
sudo wpa_supplicant /etc/wpa_supplicant/wpa_supplicant.conf
iface default inet dhcp

content of /etc/wpa_supplicant/wpa_supplicant.conf



I doesn't work. How should I do with it?

  • Add country=TW as the third line in your supplicant config.
    – Dougie
    Jun 9, 2020 at 11:34
  • What operating system do you use? Raspberry Pi OS Buster?
    – Ingo
    Jun 18, 2020 at 9:30
  • GNU/Linux with kernel (4.19.57-V7+) Jun 18, 2020 at 10:16
  • GNU/Linux are all Linux operating systems: Debian, Fedora, Suse, Slackware etc. They all behave different. Again: are you using GNU/Linux Raspberry Pi OS Buster?
    – Ingo
    Jun 18, 2020 at 10:46
  • My OS should be Raspberry Pi OS Jun 19, 2020 at 4:03

1 Answer 1


You are using old deprecated settings for WiFi. I don't know where do you get this. With Raspberry Pi OS, WiFi is working out of the box. You only have to use the right settings. I suggest you start over again with a fresh flashed Raspberry Pi OS image of your choice. Then follow the official documentation for Wireless connectivity in the Raspberry Pi Desktop or Setting up a wireless LAN via the command line.

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