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How To Install Backported iwlwifi Driver on Kubuntu 18.04 LTS for Wireless Compatibility

Ubuntu 1

In this article, we will guide you through the process of installing the backported iwlwifi driver on Kubuntu 18.04 LTS. This is particularly useful for those who are experiencing wireless compatibility issues on their systems.

Prerequisites

Before we begin, ensure that you have the following:

  • A system running Kubuntu 18.04 LTS
  • An internet connection
  • Sudo or root privileges

Step 1: Installing Necessary Packages

First, we need to install some necessary packages. Open a terminal and run the following command:

sudo apt-get install git build-essential

This command installs git, which we will use to clone the backport-iwlwifi repository, and build-essential, which contains a list of packages essential for building Ubuntu packages including gcc compiler, make and more.

Step 2: Cloning the Backport-iwlwifi Repository

Next, we will clone the backport-iwlwifi repository by running the following command:

git clone https://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/backport-iwlwifi.git

This command uses git to clone the repository from the given URL.

Step 3: Navigating to the Backport-iwlwifi Directory

After cloning the repository, navigate to the backport-iwlwifi directory by running:

cd backport-iwlwifi

This command changes the current directory to the backport-iwlwifi directory.

Step 4: Configuring the Driver

Next, we need to configure the driver. Run the following command:

make defconfig-iwlwifi-public

The make command is used to build and install packages from source. Here, it’s used to configure the iwlwifi driver.

Step 5: Disabling a Specific Option in the Configuration File

We need to disable a specific option in the configuration file. Run the following command:

sed -i 's/CPTCFG_IWLMVM_VENDOR_CMDS=y/# CPTCFG_IWLMVM_VENDOR_CMDS is not set/' .config

This command uses sed, a stream editor for filtering and transforming text. It replaces the line CPTCFG_IWLMVM_VENDOR_CMDS=y with # CPTCFG_IWLMVM_VENDOR_CMDS is not set in the .config file.

Step 6: Building the Driver

Now, we can build the driver by running the following command:

make -j4

The -j4 option specifies the number of jobs (commands) to run simultaneously. If you have a multi-core processor, you can increase this number to speed up the building process.

Step 7: Installing the Driver

Once the driver is built, we can install it by running the following command:

sudo make install

This command installs the driver using make.

Step 8: Rebooting the System

Finally, reboot your system to ensure the changes take effect.

sudo reboot

Verifying the Installation

After the reboot, you can check if the firmware is loaded by running the following command:

dmesg | grep iwl

The dmesg command is used to print and control kernel ring buffer. This command will print all the messages related to iwlwifi driver.

Conclusion

By following these steps, you should have successfully installed the backported iwlwifi driver on your Kubuntu 18.04 LTS system. This should help in resolving any wireless compatibility issues you were experiencing. If you need to find the firmware, you can visit the Linux Kernel’s firmware git tree.

Remember, if you are using a newer version of Linux (version 5 or above), backporting iwlwifi may not be necessary and could potentially cause conflicts with other network adapters. Always check the compatibility of your system before proceeding with any driver installations.

What is the purpose of installing the backported iwlwifi driver?

The backported iwlwifi driver is installed to resolve wireless compatibility issues on systems running Kubuntu 18.04 LTS.

What are the prerequisites for installing the backported iwlwifi driver?

The prerequisites for installing the backported iwlwifi driver are a system running Kubuntu 18.04 LTS, an internet connection, and sudo or root privileges.

How do I install the necessary packages for the backported iwlwifi driver?

You can install the necessary packages by running the command sudo apt-get install git build-essential in the terminal.

How do I clone the backport-iwlwifi repository?

You can clone the backport-iwlwifi repository by running the command git clone https://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/backport-iwlwifi.git in the terminal.

How do I navigate to the backport-iwlwifi directory?

You can navigate to the backport-iwlwifi directory by running the command cd backport-iwlwifi in the terminal.

What is the purpose of configuring the driver?

Configuring the driver is necessary to set up the iwlwifi driver for installation.

How do I build the driver?

You can build the driver by running the command make -j4 in the backport-iwlwifi directory.

How do I install the driver?

You can install the driver by running the command sudo make install in the backport-iwlwifi directory.

Why do I need to reboot the system after installing the driver?

Rebooting the system is necessary for the changes to take effect and for the driver to be properly loaded.

How can I verify if the driver is installed correctly?

You can verify the installation by running the command dmesg | grep iwl in the terminal to check for any iwlwifi-related messages.

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