How to change the screen resolution in CentOS?

1 year ago
Isabella Edwards
2 minutes

To adjust the screen resolution of CentOS, you can follow these steps:

  1. Open the terminal window.
  2. Use the following command to check the available display resolution options in the system:
  3. xrandr stands for X Resize, Rotate and Reflection and it is a command-line tool used for configuring monitors and screens in Unix-like operating systems.
  4. Choose a resolution that best fits your device, such as 1920×1080.
  5. Change the screen resolution using the following command:
  6. Set the resolution of the display named to using xrandr.
  7. The is the name of the monitor you want to change the resolution for, which can be found in the output of the xrandr command. The resolution you choose goes after the -mode parameter.
  8. For example, to change the resolution to 1920×1080:
  9. Set the HDMI-1 output resolution to 1920×1080 using xrandr.
  10. The name of the monitor here is HDMI-1, with 1920×1080 being the resolution to be set.
  11. Check if the new resolution is in effect:
  12. adjusts the screen resolution and orientation on a computer.
  13. If the resolution has been successfully changed, you will see the new resolution settings in the output.
  14. If the resolution change is successful, you can add the above command to the system startup script so that the new resolution settings are automatically applied every time the system starts up.
  15. Commands can be added to the /etc/rc.local file, making sure they are added before the “exit 0” line. For example:
  16. Edit the file /etc/rc.local using the command sudo nano.
  17. Add the following content to the file (replace and with your settings):
  18. xrandr –output –mode
  19. Save the file and exit.
  20. Make the rc.local file executable by using the following command:
  21. Give executable permissions to the file located at /etc/rc.local by using the command “sudo chmod +x /etc/rc.local”.
  22. Now, the new resolution settings will be automatically applied every time the system starts up.

Please note that the above steps may vary depending on the actual circumstances. You may need to adjust according to your system configuration and display settings.

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