Flickering Screen On Ubuntu 24.04 On Only One Monitor

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Flickering Screen on Ubuntu 24.04: A Troubleshooting Guide for One Monitor

Are you experiencing a flickering screen on Ubuntu 24.04, but only on one of your monitors? You're not alone. This issue can be frustrating, especially when you're trying to work or enjoy your favorite content. In this article, we'll delve into the possible causes and solutions for a flickering screen on Ubuntu 24.04, specifically on one monitor.

Before we dive into the troubleshooting process, let's take a look at your system configuration:

  • Operating System: Ubuntu 24.04
  • Graphics Card: NVIDIA GeForce RTX 3080
  • Driver Version: NVIDIA Driver Version 550.120
  • NVML Version: 12.550.120
  • Monitors:
    • 1080p Dell
    • 4k Samsung

The flickering issue is only occurring on the 4k Samsung monitor. This suggests that the problem might be related to the graphics driver or the monitor's settings.

Based on your system configuration and the symptoms, here are some possible causes for the flickering screen:

  • Graphics Driver Issues: Outdated or corrupted graphics drivers can cause display problems, including flickering.
  • Monitor Settings: Incorrect or incompatible monitor settings can lead to display issues.
  • DisplayPort Version: If your monitor is connected using DisplayPort, ensure that the version is compatible with your graphics card.
  • Refresh Rate: A mismatched refresh rate between the monitor and the graphics card can cause flickering.

To resolve the flickering screen issue, follow these troubleshooting steps:

Step 1: Update NVIDIA Drivers

Ensure that your NVIDIA drivers are up-to-date. You can check for updates by running the following command in the terminal:

sudo apt update
sudo apt full-upgrade

After updating the drivers, restart your system and check if the issue persists.

Step 2: Disable NVIDIA PRIME

PRIME is a feature that allows you to use both the NVIDIA and Intel graphics cards simultaneously. However, it can sometimes cause display issues. To disable PRIME, follow these steps:

  1. Open the NVIDIA X Server Settings application.
  2. Go to the "PRIME" tab.
  3. Uncheck the box next to "Use NVIDIA PRIME for displays connected to this X screen."
  4. Click "Apply" and then "OK."

Step 3: Adjust Monitor Settings

Try adjusting the monitor settings to see if it resolves the issue:

  1. Open the NVIDIA X Server Settings application.
  2. Go to the "Display" tab.
  3. Select the 4k Samsung monitor.
  4. Adjust the refresh rate, resolution, and other settings as needed.
  5. Click "Apply" and then "OK."

Step 4: Check DisplayPort Version

If your monitor is connected using DisplayPort, ensure that the version is compatible with your graphics card:

  1. Open the NVIDIA X Server Settings application.
  2. Go to the "Display" tab.
  3. Select the 4k Samsung monitor.
  4. Check the DisplayPort version.
  5. If necessary, update the DisplayPort version to a compatible version.

Step 5: Adjust Refresh Rate

A mismatched refresh rate between the monitor and the graphics card can cause flickering. Try adjusting the refresh rate:

  1. Open the NVIDIA X Server Settings application.
  2. Go to the "Display" tab.
  3. Select the 4k Samsung monitor.
  4. Adjust the refresh rate to a compatible value.
  5. Click "Apply" and then "OK."

A flickering screen on Ubuntu 24.04 can be frustrating, especially when it's only occurring on one monitor. By following the troubleshooting steps outlined in this article, you should be able to resolve the issue. Remember to update your NVIDIA drivers, disable PRIME, adjust monitor settings, check DisplayPort version, and adjust refresh rate. If the issue persists, consider seeking further assistance from the Ubuntu community or NVIDIA support.

In our previous article, we explored the possible causes and solutions for a flickering screen on Ubuntu 24.04, specifically on one monitor. However, we understand that sometimes, a simple troubleshooting guide may not be enough to resolve the issue. That's why we've put together a Q&A guide to help you address some of the most common questions related to this issue.

Q: What are the most common causes of a flickering screen on Ubuntu 24.04?

A: The most common causes of a flickering screen on Ubuntu 24.04 include:

  • Graphics Driver Issues: Outdated or corrupted graphics drivers can cause display problems, including flickering.
  • Monitor Settings: Incorrect or incompatible monitor settings can lead to display issues.
  • DisplayPort Version: If your monitor is connected using DisplayPort, ensure that the version is compatible with your graphics card.
  • Refresh Rate: A mismatched refresh rate between the monitor and the graphics card can cause flickering.

Q: How do I update my NVIDIA drivers on Ubuntu 24.04?

A: To update your NVIDIA drivers on Ubuntu 24.04, follow these steps:

  1. Open the terminal and run the following command: sudo apt update
  2. Run the following command to upgrade all packages: sudo apt full-upgrade
  3. Restart your system and check if the issue persists.

Q: What is PRIME, and how do I disable it on Ubuntu 24.04?

A: PRIME is a feature that allows you to use both the NVIDIA and Intel graphics cards simultaneously. To disable PRIME on Ubuntu 24.04, follow these steps:

  1. Open the NVIDIA X Server Settings application.
  2. Go to the "PRIME" tab.
  3. Uncheck the box next to "Use NVIDIA PRIME for displays connected to this X screen."
  4. Click "Apply" and then "OK."

Q: How do I adjust my monitor settings on Ubuntu 24.04?

A: To adjust your monitor settings on Ubuntu 24.04, follow these steps:

  1. Open the NVIDIA X Server Settings application.
  2. Go to the "Display" tab.
  3. Select the monitor you want to adjust.
  4. Adjust the refresh rate, resolution, and other settings as needed.
  5. Click "Apply" and then "OK."

Q: What is the DisplayPort version, and how do I check it on Ubuntu 24.04?

A: The DisplayPort version is the version of the DisplayPort interface used by your monitor. To check the DisplayPort version on Ubuntu 24.04, follow these steps:

  1. Open the NVIDIA X Server Settings application.
  2. Go to the "Display" tab.
  3. Select the monitor you want to check.
  4. Check the DisplayPort version.
  5. If necessary, update the DisplayPort version to a compatible version.

Q: How do I adjust the refresh rate on Ubuntu 24.04?

A: To adjust the refresh rate on Ubuntu 24.04, follow these steps:

  1. Open the NVIDIA X Server Settings application.
  2. Go to the "Display" tab.
  3. Select the monitor you want to adjust.
  4. Adjust the refresh rate to a compatible value.
  5. Click "Apply" and then "OK."

Q: What if I've tried all the troubleshooting steps and the issue persists?

A: If you've tried all the troubleshooting steps and the issue persists, consider seeking further assistance from the Ubuntu community or NVIDIA support. You can also try resetting your system to its default settings or reinstalling the NVIDIA drivers.

We hope this Q&A guide has helped you address some of the most common questions related to a flickering screen on Ubuntu 24.04. Remember to always update your NVIDIA drivers, disable PRIME, adjust monitor settings, check DisplayPort version, and adjust refresh rate. If the issue persists, don't hesitate to seek further assistance.