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How To Uninstall DKMS Modules When There are Multiple Versions?

Ubuntu 7

Dynamic Kernel Module Support (DKMS) is a system used to generate Linux kernel modules whose sources generally reside outside the kernel source tree. It allows for kernel drivers to be automatically rebuilt when new kernels are released. However, there are instances when you might need to uninstall a particular module, especially when there are multiple versions involved. This guide will walk you through the process of uninstalling DKMS modules when there are multiple versions.

Quick Answer

To uninstall DKMS modules when there are multiple versions, you can use the dkms uninstall command followed by the module name, version, and kernel version. However, it’s important to note that uninstalling a module for a specific kernel version may affect its functionality on that kernel. It’s recommended to troubleshoot any issues before uninstalling modules.

Understanding DKMS

Before diving into the uninstallation process, it’s crucial to understand what DKMS is and how it works. DKMS is a framework that allows kernel modules to be updated without changing the entire kernel. It is particularly useful for those modules that are not part of the official Linux distribution.

Checking Installed DKMS Modules

First, you need to check the DKMS modules installed on your system. You can do this by running the following command in your terminal:

dkms status

This command will list all the installed DKMS modules along with their versions and the kernel versions they are tied to.

Uninstalling DKMS Modules

Once you have identified the DKMS module you want to uninstall, you can do so by specifying the module name, version, and the kernel version. Here is the general syntax of the command:

dkms uninstall -k [kernel_version] [module_name]/[module_version]

In this command:

  • -k is used to specify the kernel version.
  • [kernel_version] is the version of the kernel for which you want to uninstall the module.
  • [module_name] is the name of the module you want to uninstall.
  • [module_version] is the version of the module you want to uninstall.

For example, to uninstall the module rtl8812AU with version 4.3.14 for the kernel version 4.4.0-45-generic, you would use the following command:

dkms uninstall -k 4.4.0-45-generic rtl8812AU/4.3.14

Considerations When Uninstalling DKMS Modules

Remember that uninstalling a DKMS module for a specific kernel version may affect the functionality of that module on that particular kernel. If you’re experiencing issues with your Wi-Fi adapter after updating the OS, it’s recommended to troubleshoot the issue rather than uninstalling the modules.

Conclusion

Uninstalling DKMS modules when there are multiple versions involved is a straightforward process once you understand the command syntax. However, it’s crucial to be aware of the implications of uninstalling these modules, as it can affect the functionality of your system. Always ensure you have a good reason for uninstalling a module and that you have taken the necessary precautions to prevent system issues.

How can I check if DKMS modules are installed on my system?

You can check the installed DKMS modules on your system by running the command dkms status in your terminal.

Can I uninstall DKMS modules for specific kernel versions?

Yes, you can uninstall DKMS modules for specific kernel versions. You need to specify the kernel version along with the module name and version when running the uninstall command using the syntax dkms uninstall -k [kernel_version] [module_name]/[module_version].

What happens if I uninstall a DKMS module for a specific kernel version?

Uninstalling a DKMS module for a specific kernel version may affect the functionality of that module on that particular kernel. It’s important to consider the implications before uninstalling and troubleshoot any issues you may be experiencing instead.

How can I uninstall a specific version of a DKMS module?

To uninstall a specific version of a DKMS module, you can use the command dkms uninstall -k [kernel_version] [module_name]/[module_version]. Replace [kernel_version] with the desired kernel version, [module_name] with the module name, and [module_version] with the specific version you want to uninstall.

Can I uninstall multiple versions of a DKMS module at once?

No, you need to uninstall each version of a DKMS module separately. The uninstall command needs to specify the kernel version, module name, and module version for each uninstallation.

What should I do if I encounter issues with my Wi-Fi adapter after uninstalling a DKMS module?

If you experience issues with your Wi-Fi adapter after uninstalling a DKMS module, it’s recommended to troubleshoot the issue rather than immediately uninstalling the module. There may be other factors causing the problem, and troubleshooting can help identify and resolve the underlying issue.

Are DKMS modules automatically rebuilt when new kernels are released?

Yes, that’s one of the main purposes of DKMS. It automatically rebuilds kernel modules when new kernels are released, ensuring compatibility between the modules and the updated kernel.

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