Troubleshooting “xrandr: failed to get size of gamma for output default” in Linux Mint 18.03
Summary: Learn how to address the “xrandr: failed to get size of gamma for output default” error on Linux Mint 18.03. Understand the possible causes and follow step-by-step solutions to resolve this display-related issue connected via HDMI.
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If you’re a Linux Mint 18.03 user and have encountered the error message “xrandr: failed to get size of gamma for output default” when dealing with display configurations, don’t worry – you’re not alone. This error often occurs when attempting to use the xrandr tool to manage screen settings, especially when connected via HDMI. In this guide, we’ll explore the potential causes of this issue and provide step-by-step solutions to help you resolve it.
Understanding the Error Message
The “xrandr: failed to get size of gamma for output default” error typically indicates a problem with the xrandr utility, which is used to configure screen settings in X Window System. The error message specifically mentions an issue related to the size of gamma for the default output, which is connected via HDMI.
Possible Causes
Driver Issues:
Outdated or incompatible graphics drivers may be causing conflicts with xrandr.
Check for driver updates and ensure compatibility with your graphics hardware.
Incorrect Configuration:
Incorrect display configurations in your Xorg settings could lead to this error.
Verify your Xorg configuration files for any discrepancies.
HDMI Connection:
The error mentions HDMI, so it’s crucial to check the physical HDMI connection.
Ensure the cable is securely connected and functioning properly.
Step-by-Step Solutions
Update Graphics Drivers
Ensure your graphics drivers are up to date. You can use the package manager or visit the official website of your graphics card manufacturer to download and install the latest drivers.
Example for NVIDIA graphics cards (replace with appropriate driver)
sudo apt-get update
sudo apt-get install nvidia-driver
Check Xorg Configuration
Verify your Xorg configuration files for any errors or inconsistencies. The primary configuration file is usually located at /etc/X11/xorg.conf. Edit the file as needed:
sudo nano /etc/X11/xorg.conf
Make sure that the settings, especially those related to your display, are correctly configured.
Verify HDMI Connection
Inspect the physical HDMI connection. Try using a different HDMI cable or connecting to a different HDMI port on your device. Ensure that the HDMI cable and ports are in good condition.
Conclusion
Resolving the “xrandr: failed to get size of gamma for output default” error in Linux Mint 18.03 involves a systematic approach. By addressing potential driver issues, checking and updating Xorg configurations, and verifying the HDMI connection, you can troubleshoot and resolve this display-related problem.
Remember to restart your system after making changes to see if the issue persists. If the problem persists, you may want to seek assistance from Linux Mint forums or relevant support channels.
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