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Solving TP-Link Archer T4U(EU) v2.0 Connectivity Issues on Ubuntu 18.04.1

Ubuntu 2


Ubuntu 18.04.1 is a popular choice for many users due to its stability and robustness. However, some users may encounter connectivity issues when using the TP-Link Archer T4U(EU) v2.0 USB WiFi adapter. This article aims to provide a comprehensive guide to troubleshoot and resolve these connectivity issues.

Understanding the Problem

The TP-Link Archer T4U(EU) v2.0 USB WiFi adapter can sometimes fail to connect to certain networks on Ubuntu 18.04.1. This issue can persist even after trying various drivers, including those from TP-Link, the rtl8812AU driver included in Ubuntu, and community forks. The adapter may connect to one network but fail to connect to another. Once it fails to connect, it may also fail to reconnect until the adapter is unplugged and replugged.

Possible Solutions

1. Using gnab’s rtl8812au Repository

One potential solution is to use the driver from gnab’s rtl8812au repository. This repository forks Realtek’s open source driver 4.2.2. Follow the steps below to install this driver:

# Clone the repository
git clone

# Navigate into the cloned directory
cd rtl8812au

# Compile and install the driver
sudo make
sudo make install

In the above commands, git clone is used to clone or download the repository from GitHub. cd is used to change the current directory to the cloned repository. sudo make compiles the driver and sudo make install installs the driver.

2. Using the TP-Link Archer T4U v3 Repository

Another potential solution is to use a repository specifically designed for the v3 version of the adapter and Linux kernel 5. While this might not directly apply to the v2.0 adapter, it could be worth exploring if other options fail. You can find this repository here.

3. Revisiting Ask Ubuntu Solutions

Ask Ubuntu is a community-driven platform where users share solutions to common Ubuntu-related issues. It might be worth revisiting this platform to find more recent solutions or workarounds. You can find relevant solutions here.

4. Google Search

You can try searching for the error message “wpa_supplicant Association request to the driver failed” on Google. This can provide more information, including potential solutions or workarounds.


While these solutions might not guarantee a resolution to the specific issue, they provide a starting point for troubleshooting. It could be a compatibility problem with your hardware or a deeper underlying problem. If none of the suggestions work, you may need to consider alternative WiFi adapters or seek further assistance from the Ubuntu community or TP-Link support.

Remember, troubleshooting is a process of elimination. It’s crucial to be patient and persistent. Good luck!

Can I use the TP-Link Archer T4U(EU) v2.0 USB WiFi adapter on other Linux distributions?

While this article focuses on Ubuntu 18.04.1, the TP-Link Archer T4U(EU) v2.0 USB WiFi adapter should be compatible with other Linux distributions as well. However, the steps and solutions mentioned in this article may not apply directly to other distributions. It is recommended to search for specific guides or resources for your particular distribution to troubleshoot any connectivity issues.

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