Software & AppsOperating SystemLinux

How To Fix Bluetooth 5.0 Dongle Firmware Issue on Ubuntu 21.04

Ubuntu 10

In this article, we will guide you through the process of fixing a common issue that users encounter with Bluetooth 5.0 dongles on Ubuntu 21.04. This issue is often characterized by an error message indicating that the required firmware is unavailable. We will teach you how to manually install the missing firmware for the rtl8761b chipset, which is commonly used in Bluetooth 5.0 dongles.

Quick Answer

To fix the Bluetooth 5.0 dongle firmware issue on Ubuntu 21.04, you can manually install the missing firmware for the rtl8761b chipset. This involves downloading the required firmware files, moving them to the appropriate directory, loading the firmware, and verifying the installation.

Identifying the Problem

The first step in troubleshooting any technical issue is to identify the problem. In this case, you may encounter an error message indicating that the required firmware is missing when you try to use your Bluetooth 5.0 dongle. This issue is typically caused by the absence of the necessary firmware for the rtl8761b chipset.

Downloading the Required Firmware

To resolve this issue, you need to manually download and install the missing firmware. You can do this by executing a series of commands in the terminal.

Here are the commands you need to execute:

cd /tmp
wget https://raw.githubusercontent.com/Realtek-OpenSource/android_hardware_realtek/rtk1395/bt/rtkbt/Firmware/BT/rtl8761b_config
wget https://raw.githubusercontent.com/Realtek-OpenSource/android_hardware_realtek/rtk1395/bt/rtkbt/Firmware/BT/rtl8761b_fw

These commands will navigate to the /tmp directory and download the necessary firmware files from the official Realtek GitHub repository.

Installing the Firmware

After downloading the firmware, the next step is to move these files to the appropriate directory and rename them. Execute the following commands to do this:

sudo mv rtl8761b_config /lib/firmware/rtl_bt/rtl8761b_config.bin
sudo mv rtl8761b_fw /lib/firmware/rtl_bt/rtl8761b_fw.bin

These commands move the downloaded firmware files to the /lib/firmware/rtl_bt/ directory and rename them to rtl8761b_config.bin and rtl8761b_fw.bin, respectively.

Loading the Firmware

The next step is to load the newly installed firmware. You can do this by executing the following commands:

sudo modprobe btusb
sudo systemctl start bluetooth.service

The modprobe command is used to add a module to the Linux kernel. In this case, we are adding the btusb module, which is necessary for the operation of USB Bluetooth devices. The systemctl start command is used to start the Bluetooth service.

Verifying the Installation

After loading the firmware, you should verify that the Bluetooth device is up and running. You can do this by executing the following command:

hciconfig -a

This command displays detailed information about all the Bluetooth devices on your system. If the installation was successful, your Bluetooth 5.0 dongle should be listed among these devices.

Conclusion

In this article, we have shown you how to manually install the missing firmware for a Bluetooth 5.0 dongle on Ubuntu 21.04. This process involves downloading the necessary firmware files, moving them to the appropriate directory, loading the firmware, and verifying the installation.

For a more automated solution, you can use a script-based approach mentioned in a comment on a Unix Stack Exchange post. The script automatically installs missing Bluetooth firmware, including rtl8761b. You can find the script at this link: Unix Stack Exchange

If you have any questions or run into any issues, feel free to leave a comment below. We are always here to help.

What is a Bluetooth 5.0 dongle?

A Bluetooth 5.0 dongle is a small device that connects to your computer via a USB port and allows you to wirelessly connect Bluetooth-enabled devices such as headphones, speakers, and keyboards to your computer.

Why am I getting a firmware issue with my Bluetooth 5.0 dongle on Ubuntu 21.04?

The firmware issue occurs because the necessary firmware for the rtl8761b chipset, which is commonly used in Bluetooth 5.0 dongles, is missing in Ubuntu 21.04.

How do I identify the firmware issue with my Bluetooth 5.0 dongle on Ubuntu 21.04?

You can identify the firmware issue when you receive an error message indicating that the required firmware is unavailable or missing when you try to use your Bluetooth 5.0 dongle on Ubuntu 21.04.

How can I manually download the missing firmware for my Bluetooth 5.0 dongle?

You can manually download the missing firmware for your Bluetooth 5.0 dongle by executing a series of commands in the terminal. Please refer to the steps mentioned in the article to download and install the firmware.

Can I automate the process of installing missing Bluetooth firmware on Ubuntu 21.04?

Yes, you can use a script-based approach mentioned in a comment on a Unix Stack Exchange post. The script automatically installs missing Bluetooth firmware, including rtl8761b. You can find the script at this link: Unix Stack Exchange

How do I verify if the firmware installation was successful?

After loading the firmware, you can verify the installation by executing the command hciconfig -a in the terminal. This command will display detailed information about all the Bluetooth devices on your system, and if the installation was successful, your Bluetooth 5.0 dongle should be listed among these devices.

What should I do if I encounter any issues or have further questions?

If you encounter any issues or have further questions, feel free to leave a comment below the article. We are always here to help and assist you.

Leave a Comment

Your email address will not be published. Required fields are marked *