Software & AppsOperating SystemLinux

How To Fix Droidcam’s “Device not found” Error on Ubuntu 18.04.4 LTS

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If you’re using Droidcam on Ubuntu 18.04.4 LTS, you may have encountered the “Device not found” error. This issue typically arises when Droidcam can’t locate the /dev/video0 device after a system update. This article will guide you through several solutions to this problem.

Solution 1: Reinstall Droidcam

The first solution is to reinstall Droidcam. This can be done by following the steps provided on the Droidcam website for Linux installation. Here’s a quick rundown of the process:

  1. Download the latest version of Droidcam from the official website.
  2. Extract the downloaded file.
  3. Open terminal and navigate to the extracted Droidcam directory.
  4. Run the installation script with sudo privileges using the command sudo ./install.

This command will reinstall Droidcam and should fix the “Device not found” error if it was caused by a corrupted or outdated installation.

Solution 2: Check v4l2loopback Module

The next solution is to check if the v4l2loopback module is loaded. This module is required for Droidcam to function properly. You can check if it’s loaded by running the following command in the terminal:

sudo modprobe v4l2loopback

If this command returns an error like “Operation not permitted,” ensure you’re running the command with sudo privileges. If the module is not loaded, this command will load it.

Solution 3: Uninstall and Reinstall Droidcam

In some cases, the issue may be related to a kernel update. If Droidcam is looking for the v4l2loopback_dc module and it is no longer present in the current kernel folder, the solution is to uninstall and reinstall Droidcam. Here are the steps:

  1. Open terminal and navigate to the Droidcam directory.
  2. Run the uninstall script with sudo privileges using the command sudo ./uninstall.
  3. Once the uninstallation is complete, reinstall Droidcam by following the steps in Solution 1.

This process should ensure that Droidcam is compatible with the current kernel version.

Solution 4: Rebuild Dependencies and Build Droidcam from Source

If none of the above solutions work, it may be necessary to rebuild the required dependencies and build Droidcam from source. This involves installing the necessary packages, cloning the Droidcam repository, building the dependencies, and running the installation script. Here are the steps:

  1. Open terminal and install the necessary packages using the command sudo apt-get install linux-headers-$(uname -r) build-essential.
  2. Clone the Droidcam repository using the command git clone
  3. Navigate to the cloned Droidcam directory.
  4. Build the dependencies using the command make.
  5. Run the installation script with sudo privileges using the command sudo ./install.

This process should resolve any issues related to missing or outdated dependencies.


The “Device not found” error in Droidcam on Ubuntu 18.04.4 LTS can be frustrating, but it’s usually fixable with a bit of troubleshooting. By reinstalling Droidcam, checking the v4l2loopback module, uninstalling and reinstalling Droidcam, or rebuilding dependencies and building Droidcam from source, you should be able to resolve the issue. Remember to follow the instructions carefully and ask for help on relevant forums or communities if the issue persists.

What is Droidcam?

Droidcam is a tool that allows you to use your Android device as a wireless webcam for your computer. It is commonly used for video conferencing, live streaming, and other applications that require a webcam.

How can I download Droidcam for Ubuntu 18.04.4 LTS?

You can download Droidcam for Ubuntu 18.04.4 LTS by visiting the official Droidcam website ( They provide a Linux installation package that you can download and install on your system.

Can I use Droidcam with other Linux distributions?

Yes, Droidcam is compatible with other Linux distributions as well. However, the installation process may vary depending on the distribution. It’s always recommended to check the official Droidcam documentation or forums for specific instructions for your distribution.

How do I check the kernel version in Ubuntu?

You can check the kernel version in Ubuntu by opening a terminal and running the command uname -r. This will display the kernel version number.

Is it necessary to have the `v4l2loopback` module loaded for Droidcam to work?

Yes, the v4l2loopback module is required for Droidcam to function properly. It creates a virtual video device that Droidcam uses to transmit the video feed from your Android device to your computer.

Can I use Droidcam with multiple Android devices simultaneously?

Yes, Droidcam supports using multiple Android devices simultaneously. Each device will be assigned a different video device (e.g., /dev/video0, /dev/video1, etc.) that you can select in your video conferencing or streaming application.

What should I do if none of the provided solutions fix the “Device not found” error?

If none of the provided solutions work, it’s recommended to seek help on relevant forums or communities dedicated to Ubuntu or Droidcam. The community members may have encountered similar issues and can provide further assistance in troubleshooting the problem.

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