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Fixing Printing Service Issue on Ubuntu 18.04 LTS

Ubuntu 9

In this article, we will discuss how to troubleshoot and fix the printing service issue on Ubuntu 18.04 LTS. This issue can manifest in various ways, such as the printer not being recognized, print jobs not being processed, or the print service not being available at all.

Quick Answer

To fix printing service issues on Ubuntu 18.04 LTS, you can start by restarting the CUPS service using the command "sudo service cups restart". Check the status of the CUPS service using "systemctl status cups" to ensure it is running correctly. If the issue persists, you can try reinstalling the CUPS package with "sudo apt-get install –reinstall cups" or reset the startup applications with "sudo apt-get install –reinstall gnome-session". If none of these steps work, reinstalling Ubuntu 18.04 LTS may be necessary.

Understanding the Problem

The Common Unix Printing System (CUPS), which is the core of printing services in Ubuntu, may sometimes fail to start or function correctly. This could be due to various reasons such as system updates, accidental changes in system settings, or conflicts with other software.

Initial Troubleshooting Steps

Restarting the CUPS Service

The first step in troubleshooting the issue is to restart the CUPS service. This can be done by opening a terminal and running the following command:

sudo service cups restart

The sudo command is used to execute the following command with superuser privileges. service is a utility to start, stop, and manage services in Unix and Unix-like operating systems, and cups restart instructs the service utility to restart the CUPS service.

Checking the CUPS Service Status

After restarting the CUPS service, you should check its status to ensure it is running correctly. This can be done by running the following command in the terminal:

systemctl status cups

The systemctl command is used to control the systemd system and service manager, and status cups instructs it to display the status of the CUPS service. If the service is running correctly, you should see an output similar to Active: active (running).

If the output shows a “start-limit-hit” error, it means the service has failed to start multiple times.

Advanced Troubleshooting Steps

If the initial troubleshooting steps do not resolve the issue, you can try the following advanced steps.

Reinstalling the CUPS Package

To reinstall the CUPS package, run the following command in the terminal:

sudo apt-get install --reinstall cups

The apt-get command is the package handling utility in Ubuntu, install instructs it to install a package, --reinstall tells it to reinstall the package, and cups is the name of the package to be reinstalled.

After the reinstallation, restart your system and check if the printing service is now available.

Resetting Startup Applications

If you suspect that the issue is related to the accidental deletion of startup applications, you can reset them to their default settings. To do this, run the following command in the terminal:

sudo apt-get install --reinstall gnome-session

The gnome-session package contains the GNOME session manager, which is responsible for starting up the core components of the GNOME desktop and managing their lifecycle.

Conclusion

If none of the above steps resolve the issue, you may need to consider reinstalling Ubuntu 18.04 LTS. However, it is recommended to backup your important data before proceeding with the reinstallation.

Please note that the steps mentioned in this article are general troubleshooting steps and may not resolve all possible issues related to the printing service in Ubuntu 18.04 LTS. If you continue to experience issues, consider seeking help from the Ubuntu community or a professional service.

How can I check if the CUPS service is running correctly?

To check the status of the CUPS service, open a terminal and run the command systemctl status cups. If the service is running correctly, you should see an output similar to Active: active (running).

What should I do if the CUPS service fails to start multiple times?

If the CUPS service fails to start multiple times and you see a "start-limit-hit" error, you can try reinstalling the CUPS package. Run the command sudo apt-get install --reinstall cups in the terminal to reinstall the package. After reinstalling, restart your system and check if the printing service is now available.

How can I reset the startup applications in Ubuntu 18.04 LTS?

If you suspect that the issue is related to accidental deletion of startup applications, you can reset them to their default settings. Run the command sudo apt-get install --reinstall gnome-session in the terminal to reinstall the GNOME session manager, which is responsible for starting up the core components of the GNOME desktop and managing their lifecycle.

What should I do if none of the troubleshooting steps resolve the printing service issue?

If none of the troubleshooting steps mentioned in the article resolve the issue, you may need to consider reinstalling Ubuntu 18.04 LTS. However, it is recommended to backup your important data before proceeding with the reinstallation. Please note that this is a last resort option and you may want to seek help from the Ubuntu community or a professional service before taking this step.

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