Summary: Learn how to address the “Fails to Get Size of Gamma” error when attempting to set resolution in Ubuntu. Explore common causes and effective solutions to resolve this display issue on your Linux system.
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Troubleshooting “Fails to Get Size of Gamma” Error in Ubuntu
If you’re an Ubuntu user trying to set the resolution on your system and encountering the “Fails to Get Size of Gamma” error, you’re not alone. This issue can be frustrating, but fortunately, there are ways to address it. In this guide, we’ll explore the common causes of this error and provide you with effective solutions to resolve it.
Understanding the Error
The “Fails to Get Size of Gamma” error typically occurs when you attempt to change the screen resolution using tools like xrandr or through the display settings in Ubuntu. The error message suggests that the system is encountering difficulties in determining the gamma size, leading to a failure in adjusting the resolution.
Common Causes
Several factors could contribute to the “Fails to Get Size of Gamma” error. Here are some common causes:
Graphics Driver Issues: Outdated or incompatible graphics drivers may hinder the system’s ability to retrieve the gamma size information.
Xorg Configuration: Incorrect configurations in the Xorg server settings can lead to issues with resolution adjustments.
Permissions: Insufficient permissions might prevent the system from accessing the necessary information to set the resolution.
Solutions
Update Graphics Drivers
Ensure that your graphics drivers are up-to-date. You can use the following commands to update your drivers:
sudo apt-get update
sudo apt-get upgrade
Additionally, consider installing the latest proprietary drivers for your graphics card.
Reset Xorg Configuration
Resetting the Xorg configuration files to their default settings might resolve the issue. Use the following commands:
sudo mv /etc/X11/xorg.conf /etc/X11/xorg.conf.backup
sudo service lightdm restart
This will move the existing Xorg configuration file and restart the display manager.
Adjust Permissions
Ensure that your user has the necessary permissions to make changes to the display settings. You can add your user to the “video” group using:
sudo usermod -aG video $USER
After making these changes, restart your system and attempt to adjust the resolution again.
Conclusion
Encountering the “Fails to Get Size of Gamma” error in Ubuntu can be frustrating, but with the right troubleshooting steps, you can resolve the issue and set the desired resolution. By updating graphics drivers, resetting Xorg configurations, and adjusting permissions, you increase the chances of successfully configuring your display settings.
Remember that these solutions are general guidelines, and your specific case might require additional steps. Experiment with the suggested solutions and explore related community forums for more insights into your unique situation.
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