Software & AppsOperating SystemLinux

How To Fix Snap Not Allowing Removal or Refresh of Applications

Ubuntu 12

Snap is a popular software packaging and deployment system developed by Canonical for operating systems that use the Linux kernel. While Snap provides a seamless way to install and update applications, you may sometimes encounter issues with removing or refreshing applications. This article will guide you through several solutions to tackle this issue.

Quick Answer

To fix Snap not allowing removal or refresh of applications, you can manually abort the ongoing refresh, change the schedule for automatic updates, use the --purge flag with the snap remove command, or revert to the previous version of the snap before removing it.

Understanding the Issue

Before diving into the solutions, it’s important to understand the root cause of the issue. When Snap is in the process of auto-refreshing, it doesn’t allow any other operations on the applications. This means you cannot remove or manually refresh a snap until the auto-refresh process is completed.

Solution 1: Manually Abort the Refresh

One of the most straightforward solutions is to manually abort the ongoing refresh. Here’s how you can do this:

  1. Check for Snap Changes First, you need to check for ongoing snap changes. This can be done by running the following command in your terminal:
    sudo snap changes
    This command lists all the changes that are in progress or recently completed. Each change has an associated ID.
  2. Abort the Refresh Once you have the ID for the refresh change, you can abort it using the following command:
    sudo snap abort <number>
    Replace <number> with the ID of the refresh change. This command sends a request to abort the ongoing refresh.
  3. Check the Changes Again After aborting the refresh, check the changes again using sudo snap changes. You might need to repeat this step a few times until the status of the refresh changes to “Error”. Once you see this status, you can proceed to remove the snap.
  4. Remove the Snap Finally, remove the snap using the following command:
    sudo snap remove <snap_program>
    Replace <snap_program> with the name of the snap you want to remove.

Please note that this solution has been tested with specific snaps on Ubuntu, and it may not work on other systems like Fedora.

Solution 2: Change the Schedule for Automatic Updates

Snap comes with a feature to schedule automatic updates. If you’re frequently encountering issues with removing or refreshing snaps, you might want to change the update schedule. Refer to the Snapcraft documentation on managing updates for detailed instructions.

Solution 3: Use the --purge Flag

If you want to remove a snap while a refresh is in process, you will need to wait until the refresh is finished. To speed up the removal process, you can use the --purge flag with the snap remove command. This command removes all data associated with the snap, which can make the removal process faster.

Solution 4: Revert to the Previous Version

If you want to downgrade to the previous version of a snap before removing it, you can use the snap revert command. This command reverts the snap to the previous version. After reverting, you can then remove the snap using the snap remove command.

Conclusion

While Snap provides a convenient way to manage applications on Linux, it can sometimes prevent the removal or manual refresh of applications. If you encounter this issue, the solutions provided in this article should help you resolve it. Remember, always ensure that you have the necessary permissions to perform these operations and be careful when removing snaps to avoid losing important data.

Can I remove a snap while it is being refreshed?

No, you cannot remove a snap while it is being refreshed. You will need to wait until the refresh process is completed before you can remove the snap.

How can I check for ongoing snap changes?

You can check for ongoing snap changes by running the command sudo snap changes in your terminal. This command will list all the changes that are in progress or recently completed.

What should I do if the refresh change does not abort?

If the refresh change does not abort after running the sudo snap abort <number> command, you may need to repeat the process a few times until the status of the refresh changes to "Error". Once you see this status, you can proceed to remove the snap.

How can I change the schedule for automatic updates in Snap?

You can change the schedule for automatic updates in Snap by referring to the Snapcraft documentation on managing updates. The documentation provides detailed instructions on how to modify the update schedule.

What does the `–purge` flag do when removing a snap?

When removing a snap with the snap remove command, the --purge flag can be used to remove all data associated with the snap. This can make the removal process faster but be cautious as it will delete all data related to the snap.

How can I revert to the previous version of a snap?

To revert to the previous version of a snap, you can use the snap revert command followed by the name of the snap. This command will revert the snap to the previous version, allowing you to then remove it using the snap remove command.

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