How to Fix: “Ubuntu No Wi-Fi Adapter Found” issue

Many Ubuntu users face hardware compatibility problems like being unable to detect a Wi-Fi adapter or unable to detect a graphics card. This is not a problem with any Linux distro; rather, it is a case of not having proper drivers installed on the system.

This can be fixed by either running some commands in the Terminal window or doing a Software Update using the Software Updater application. So, in this article, I’m going to show you both methods step-by-step to solve the issue of “No adapter found” in Ubuntu.

Using Software Updater

STEP 01: Before starting, make sure you have the Ubuntu installation ISO file saved in your home directory. Next, run the following commands in the Terminal window to mount the ISO:

$ sudo mkdir /media/cdrom

$ cd~

$ sudo mount – o loop [name of installation ISO file].iso

This method doesn’t require an internet connection. If you have an internet connection, then you can skip this step and head over to the next step.

STEP 02: Head over to the menu tray and search for Software & Update. Simply launch it by clicking on it, as shown in the screenshot below:

STEP 03:  On the next window, click on the first tab, i.e., the Ubuntu Software tab. Now, check the checkbox just below Installable from CD-ROM/DVD.

STEP 04: Next, head over to the Additional Drivers tab. Here, check Using Broadcom 802.11 LinuxSTA wireless driver source from bcmwl-kernel-source (proprietary), and then click on Apply Changes.

This will start the installation process. Once it is finished, your Wi-Fi card should start working properly.

Using the Broadcom wireless drivers

STEP 01: First of all, remove existing Broadcom drivers by running the following commands in the Terminal:

$ sudo apt remove broadcom-sta-dkms bcmwl-kernel-source 

STEP 02: Now, it’s time to install Broadcom wireless drivers by running the following command in the terminal:

$ sudo apt install firmware-b43-installer

Once the installation is complete, you will notice that the Wi-Fi adapter is now working properly, and the “No Wi-Fi adapter found” issue is fixed successfully.


This article discussed using two methods to fix the “Ubuntu No Wi-Fi Adapter Found” issue. These methods use the Software Updater and the Broadcom wireless drivers. We hope you found this article helpful. Check the other Linux Hint articles for more tips and tutorials.

About the author

Swapnil Tirthakar

A Software Engineer who loves football and passionate about traveling. I often spend my free time playing with gadgets and exploring new possibilities in tech world. I am Linux enthusiast and have about 6 years of experience in web development. I have good command on Python, Java, SQL and system security.