Software & AppsOperating SystemLinux

How To Fix the NMI Watchdog Soft Lockup Error on Ubuntu

Ubuntu 11

In the world of Ubuntu, encountering an error message such as “NMI watchdog: BUG: soft lockup – CPU#2 stuck for 23s! [plymouthd:305]” can be quite daunting. This error indicates a CPU problem during startup, often linked to hardware or driver issues. This article will guide you through several potential solutions to resolve this error.

Understanding the NMI Watchdog Soft Lockup Error

The NMI (Non-Maskable Interrupt) Watchdog is a debugging tool built into the Linux kernel. It’s designed to detect and report instances where the system becomes unresponsive due to the CPU being stuck in a particular operation. When this happens, the system throws the ‘soft lockup’ error.

Solution 1: Install Appropriate Nvidia Drivers

If your machine is equipped with an Nvidia GPU, the error could be due to missing or outdated drivers.

Step 1: Check for Additional Drivers

Open the “Software & Updates” settings and navigate to the “Additional Drivers” tab. Ubuntu will automatically search for proprietary drivers for your hardware.

Step 2: Install Nvidia Drivers

If any Nvidia drivers are listed, select the recommended driver and click “Apply Changes”. You’ll need to enter your password and wait for the installation to complete.

Step 3: Reboot Your System

After the installation, reboot your system to ensure the new driver is correctly loaded.

Solution 2: Replace the Power Supply

In some cases, users have reported that replacing the power supply unit (PSU) resolved the issue. This is a more drastic measure and should be considered only if other solutions fail.

Solution 3: Check for Hardware Upgrades

Upgrading your hardware, including your CPU, GPU, or RAM, could potentially resolve the issue. This solution, however, may not be feasible for everyone due to cost and technical expertise required.

Solution 4: Update BIOS Firmware

Updating your BIOS firmware can also help resolve the issue. However, this process can be risky and should only be performed by experienced users or under the guidance of a professional.

Seeking Further Assistance

If none of the above solutions work, it might be necessary to seek further assistance. You can reach out to the Ubuntu community through forums or seek technical support. Remember to provide detailed information about your system and the steps you’ve already taken to resolve the issue.

Conclusion

Resolving the NMI Watchdog Soft Lockup Error on Ubuntu can be a complex process, but with patience and a systematic approach, it’s certainly achievable. Remember to always back up your data before making any significant changes to your system. Good luck!

What does the NMI Watchdog Soft Lockup Error on Ubuntu mean?

The NMI Watchdog Soft Lockup Error on Ubuntu indicates a CPU problem during startup, often linked to hardware or driver issues.

How can I fix the NMI Watchdog Soft Lockup Error on Ubuntu?

There are several potential solutions to fix the NMI Watchdog Soft Lockup Error on Ubuntu. These include installing appropriate Nvidia drivers, replacing the power supply, checking for hardware upgrades, and updating the BIOS firmware.

How do I check for additional drivers on Ubuntu?

To check for additional drivers on Ubuntu, open the "Software & Updates" settings and navigate to the "Additional Drivers" tab. Ubuntu will automatically search for proprietary drivers for your hardware.

How do I install Nvidia drivers on Ubuntu?

If any Nvidia drivers are listed in the "Additional Drivers" tab, select the recommended driver and click "Apply Changes". Enter your password and wait for the installation to complete. Afterward, reboot your system to ensure the new driver is correctly loaded.

What should I do if the NMI Watchdog Soft Lockup Error persists after trying the solutions?

If the error persists after trying the suggested solutions, it is recommended to seek further assistance. You can reach out to the Ubuntu community through forums or seek technical support. Provide detailed information about your system and the steps you’ve already taken to resolve the issue.

Leave a Comment

Your email address will not be published. Required fields are marked *