Raspberry pi wifi troubleshooting

For the changes to take effect, reboot your Raspberry Pi with the following command:

Once your Raspberry Pi boots, it should automatically connect to your desired Wi-Fi network and configure itself via DHCP as you can see in the screenshot below.

Incorrect Country Code in wpa_supplicant.conf File

If you’re configuring Wi-Fi on your Raspberry Pi using wpa_supplicant, then you have to define a 2-letter country code on your wpa_supplicant.conf configuration file.

For example, if you’re living in the United States of America (USA), then the 2-letter country code is the US. If you’re living outside the US, then you can find the 2-letter country code for your country in the link List of country codes by alpha-2, alpha-3 code (ISO 3166).

Sometimes your Raspberry Pi may fail to connect to your Wi-Fi network if you have incorrect country code in the wpa_supplicant.conf file even when everything else if correct.

So, make sure to set the correct 2-letter country code in the wpa_supplicant.conf file if you’re having Wi-Fi connectivity issues in your Raspberry Pi.

Using Invalid Group in the wpa_supplicant.conf File

You will need operating-system-level privileges to be able to connect to a Wi-Fi network and configure the Wi-Fi interface. The root user can do anything. No problems here. But, if you want to make system-level changes (like configuring the Wi-Fi network interface) as an ordinary user, you may need to be a member of some pre-defined groups.

On Raspberry Pi OS or Debian, the group you need to be a member of to configure the Wi-Fi network interface is netdev.

On Ubuntu, the group is called the wheel.

If you’re having Wi-Fi connectivity issues, make sure that you have the right GROUP (depending on your operating system) in the wpa_supplicant.conf file.

wlan0 Not Getting IP Address Automatically via DHCP

At times, your Raspberry Pi will connect to your desired Wi-Fi network but won’t get any IP addresses. Without an IP address assigned to your Wi-Fi network interface, you won’t be able to connect to the internet.

If for some reason the DHCP client program on your Raspberry Pi is not working correctly, this may happen.

To solve this problem, you can manually ask the DHCP client program to request IP address information from the Wi-Fi router your Raspberry Pi is connected to.

To do that, run the following command:

The Wi-Fi network interface should configure itself using the IP address information from the DHCP server running on your Wi-Fi router.

Wi-Fi Not Connecting Automatically

At times, your Raspberry Pi may not connect to the Wi-Fi network automatically on boot.

If you’re facing that problem, I would suggest you check whether you have the correct Wi-Fi SSID and password in your Wi-Fi network configuration files wpa_supplicant.conf or /etc/netplan/50-cloud-init.yaml or /etc/network/interfaces.d/wlan0. You or your neighbor or your ISP may change the SSID or password of the Wi-Fi router or access point. Make sure to keep your Wi-Fi network configuration files up to date.

If you’re using wpa_supplicant for Wi-Fi network configuration on Raspberry Pi OS, Debian, or Ubuntu, this may happen if you any syntax error in the wpa_supplicant.conf file.

If you’re using Cloud-Init on Ubuntu for configuring the Wi-Fi network interface, make sure you have the correct indentation on each line of the /etc/netplan/50-cloud-init.yaml file. Incorrect indentations in the YAML configuration file is one of the most common reasons for these problems.

Raspberry Pi is Out of Wi-Fi Range

Every Wi-Fi network device has a range of limitations. If you have kept the Raspberry Pi too far away from the Wi-Fi router or the access point, due to a weak network, your Raspberry Pi may get a disconnect.

To solve this problem, make sure your Raspberry Pi is not too far away from your Wi-Fi router or access point. If the distance is too long for your Raspberry Pi, consider using a wired Ethernet network instead of Wi-Fi.

Conclusion

In this article, I have discussed the common Wi-Fi network connectivity issues of Raspberry Pi as well as how to solve these. This article will help you to diagnose Wi-Fi connectivity issues for your Raspberry Pi.

About the author

Shahriar Shovon

Freelancer & Linux System Administrator. Also loves Web API development with Node.js and JavaScript. I was born in Bangladesh. I am currently studying Electronics and Communication Engineering at Khulna University of Engineering & Technology (KUET), one of the demanding public engineering universities of Bangladesh.

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How to Fix Raspberry Pi Not Connecting to WiFi? [4 Solutions]

Lots of users complain that Raspberry Pi won’t connect to WiFi. What causes Raspberry Pi not connecting to WiFi? How to fix the issue? Now, let’s explore these questions together with MiniTool.

After analyzing many user reports and posts, we find the Raspberry Pi not connecting to WiFi issue is mainly caused by the issues with SSID. Moreover, network inconsistency, incorrect network configuration, corrupt Ethernet cable, and even hardware issues are responsible for Raspberry Pi 3 won’t connect to WiFi. Don’t worry. Here are 5 applicable ways to fix it.

A great many people don’t know how to set up a Raspberry Pi Plex server. Are you also trying to figure it out? This post provides you with a full guide.

Solution 1. Restart Your WiFi Router

An inconsistent network connection is the main reason you can’t find Raspberry Pi on network. Resetting the WiFi router can remove all the internet cache and help improve the internet speed, which may fix the issue. Let’s have a try.

Step 1. Turn off the router and unplug the power cable from the wall socket.

Step 2. Hold the Power button on the back of your router for about 15 seconds until the router is turned off completely. Or, you can disconnect the Ethernet cable from your modem.

Step 3. Then wait for about 5 minutes, and plug the power cable into the socket again and press the Power button to restart it.

After that, you can check if the “Raspberry Pi not showing up on network” problem is fixed.

Solution 2. Check the Ethernet Port and Cable

You also need to check if the connection is loosened or the Ethernet cable is unplugged by mistake or damaged. To do so, you can try using a different Ethernet cable on the router or connect it to another port. If you still can’t find Raspberry Pi on network, you can try updating the router’s firmware or move down to the following potential fixes.

Solution 3. Check SSID for Issues

As mentioned above, the improper SSID settings can cause the “Raspberry Pi not connecting to WiFi” issue. To check it, open your Wireless Settings window, and then go to the SSID/Wireless Network Name (SSID) section and make sure your name doesn’t have any underscores or other invalid characters. If there is an underscore, remove it and connect your Raspberry Pi to WiFi again, and see if the issue gets fixed.

Solution 4. Reinstall Raspbian

Sometimes the Raspberry Pi can’t connect to WiFi when your Raspbian image gets corrupted. In this case, you can try reinstalling Raspbain by the following steps.

Step 1. Click here to download the latest version of Raspberry Pi Imager.

Step 2. Launch the installer to install the imager. Once installed, connect your SD card to the Raspberry Pi.

Step 3. Run the Raspberry Pi Imager and select the required OS from the drop-down menu.

Step 4. Select the SD card and click on Write to start installing the OS on the SD card.

Once done, you can restart your Raspberry Pi using the SD card and check if the “Raspberry Pi won’t connect to WiFi” problem is resolved. If the “Raspberry Pi 3 won’t connect to WiFi” issue still occurs, you can try downgrading to an earlier version of Raspbain to see if it works.

A great many people want to install Windows 10 on Raspberry Pi 4. It is a relatively long process, but this post guides you through the whole installation.

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