Fix Unknown Error During Ubuntu Touch Install On Xiaomi Mi A2

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Experiencing issues while installing Ubuntu Touch on your Xiaomi Mi A2 (jasmine_sprout) can be frustrating. This article breaks down a common unknown error encountered during the installation process using the UBports Installer. We'll analyze the error logs, pinpoint the cause, and discuss the solution.

Understanding the Problem: A Deep Dive into the Error Log

The error log provided reveals a specific issue encountered while using the UBports Installer version 0.11.2 on a Windows 10 Pro system. Let's dissect the log to understand what went wrong.

error: Error: core:manual_download: TypeError [ERR_INVALID_ARG_TYPE]: The "src" argument must be of type string or an instance of Buffer or URL. Received undefined
stack trace: TypeError [ERR_INVALID_ARG_TYPE]: The "src" argument must be of type string or an instance of Buffer or URL. Received undefined
    at copyFile (node:fs:3011:9)
    at t.<computed> (node:electron/js2c/node_init:2:2955)
    at go$copyFile (C:\Users\lukin\AppData\Local\Temp\2zH15Mn5JzNTJumOuB378BJAJzP\resources\app.asar\node_modules\graceful-fs\graceful-fs.js:181:14)
    at Object.copyFile (C:\Users\lukin\AppData\Local\Temp\2zH15Mn5JzNTJumOuB378BJAJzP\resources\app.asar\node_modules\graceful-fs\graceful-fs.js:178:12)
    at C:\Users\lukin\AppData\Local\Temp\2zH15Mn5JzNTJumOuB378BJAJzP\resources\app.asar\node_modules\universalify\index.js:9:12
    at new Promise (<anonymous>)
    at Object.copyFile (C:\Users\lukin\AppData\Local\Temp\2zH15Mn5JzNTJumOuB378BJAJzP\resources\app.asar\node_modules\universalify\index.js:7:14)
    at C:\Users\lukin\AppData\Local\Temp\2zH15Mn5JzNTJumOuB378BJAJzP\resources\app.asar\src\core\plugins\core\plugin.js:292:22

The core issue is a TypeError with the message: "The 'src' argument must be of type string or an instance of Buffer or URL. Received undefined." This error occurs within the core:manual_download action, specifically during the attempt to copy a file. This indicates that the installer is trying to download a file, but the source (src) of the file is undefined.

Identifying the Root Cause

Looking further into the log, we see that the error happens during the download of vendor.img, a crucial firmware component for the Xiaomi Mi A2. The installer attempts to download this file from a specific URL:

"url":"https://github.com/ubports-xiaomi-sdm660/artifacts/releases/download/v0.1/vendor.img"

The error message suggests that the URL or the downloaded file itself might be missing or inaccessible. This could be due to a temporary network issue, a problem with the URL in the installer's configuration, or an issue with the file on the server.

Why This Happens: Understanding the Technical Details

The UBports Installer uses a series of actions defined in its configuration files to guide the installation process. One of these actions is core:manual_download, which is responsible for downloading specific files required for the installation. The error we see occurs when this action fails to retrieve the file because the src (source) argument, which should be the URL of the file, is undefined.

This can happen for a few reasons:

  1. Incorrect URL: The URL specified in the installer's configuration file might be incorrect or outdated. This could be due to changes in the file's location on the server or a typo in the configuration.
  2. Network Issues: A temporary network problem could prevent the installer from accessing the URL and downloading the file.
  3. Server Issues: The server hosting the file might be temporarily unavailable or experiencing issues, preventing the download.
  4. Installer Bug: In some cases, a bug in the installer itself might cause the URL to be parsed incorrectly, leading to the src argument being undefined.

The Solution: How to Fix the Error

Fortunately, this particular unknown error has a known solution. The issue was identified and resolved in a specific pull request on the UBports Installer's GitHub repository. This means that a fix has been implemented in a newer version of the installer.

Upgrading the UBports Installer: The Key to Resolution

The most effective way to resolve this error is to upgrade your UBports Installer to a version that includes the fix. The error log itself mentions that the fix was implemented in https://github.com/ubports/ubports-installer/pull/4077. This indicates that any version of the installer released after this pull request was merged should contain the fix.

Steps to Upgrade the UBports Installer

  1. Download the Latest Version: Visit the official UBports Installer download page (https://devices.ubuntu-touch.io/) and download the latest version of the installer for your operating system (Windows in this case).
  2. Uninstall the Old Version: Before installing the new version, it's recommended to uninstall the existing UBports Installer from your system. This ensures a clean installation and prevents potential conflicts.
  3. Install the New Version: Run the downloaded installer and follow the on-screen instructions to install the latest version of the UBports Installer.
  4. Retry the Installation: Once the new version is installed, try running the Ubuntu Touch installation process again for your Xiaomi Mi A2 (jasmine_sprout).

Alternative Solutions (If Upgrading Doesn't Immediately Work)

While upgrading the installer is the primary solution, here are a few additional steps you can try if you still encounter the error:

  1. Check Your Internet Connection: Ensure you have a stable and active internet connection. A temporary network outage can prevent the installer from downloading the necessary files.
  2. Temporarily Disable Antivirus/Firewall: In rare cases, antivirus software or firewalls might interfere with the installer's ability to download files. Try temporarily disabling them and retrying the installation. Remember to re-enable them after the installation is complete.
  3. Verify the Downloaded File (If Possible): If the installer allows manual download of the vendor.img file, try downloading it manually and verifying its checksum. This can help rule out issues with the downloaded file itself.

Preventing Future Issues: Best Practices for UBports Installation

To minimize the chances of encountering errors during future Ubuntu Touch installations, consider these best practices:

  1. Always Use the Latest Installer: Regularly check for updates to the UBports Installer and use the latest version. This ensures you have the latest bug fixes and improvements.
  2. Follow Official Instructions: Carefully follow the official installation instructions for your device. This includes ensuring your device is in the correct mode (e.g., Fastboot) and that you have the necessary drivers installed.
  3. Check Device Compatibility: Before starting the installation, verify that your device is officially supported by Ubuntu Touch. You can find a list of supported devices on the Ubuntu Touch website.
  4. Backup Your Data: Before making any changes to your device's operating system, always back up your important data. This protects you from data loss in case something goes wrong during the installation process.

Conclusion: Overcoming the Unknown Error

The "TypeError: The 'src' argument must be of type string or an instance of Buffer or URL. Received undefined" unknown error during Ubuntu Touch installation on the Xiaomi Mi A2 (jasmine_sprout) can be frustrating, but it's often easily resolved. By understanding the error log, identifying the root cause, and upgrading the UBports Installer, you can overcome this hurdle and successfully install Ubuntu Touch on your device. Remember to follow best practices for UBports installation to prevent future issues and enjoy the world of mobile Linux!

By upgrading to the latest version of the UBports Installer, users can seamlessly install Ubuntu Touch on their Xiaomi Mi A2 devices, ensuring a smooth and successful transition to the open-source mobile operating system.

Remember, troubleshooting technical issues can sometimes feel daunting, but by breaking down the problem into smaller parts and following a systematic approach, you can often find a solution. Don't hesitate to consult online resources, forums, and the UBports community for assistance if you encounter further challenges.

Happy flashing, folks! Let's get those Xiaomi Mi A2s running Ubuntu Touch!