Skip to main content
Sign Out

Welcome to Dell

My Account
  • Place orders quickly and easily
  • View orders and track your shipping status
  • Create and access a list of your products
  • Manage your Dell EMC sites, products, and product-level contacts using Company Administration.
Sign In Create an Account Premier Sign In Partner Program Sign In
Contact Us

Your Dell.com Carts

Article Number: 000222086

Abnormal Monitor Video Caused by Ubuntu

Summary: Information about external monitor video issues when using Ubuntu version 20.04 LTS.

This article may have been automatically translated. If you have any feedback regarding its quality, please let us know using the form at the bottom of this page.

Article Content

Symptoms

You may see dual mouse pointers, split mouse pointers, or no display while moving the mouse to a certain position (Figure 1 and 2).
Ubuntu Version 20.04 LTS Dual Mouse Pointer
Figure 1

Ubuntu Version 20.04 LTS No Mouse Pointer Display
Figure 2

Affected Systems:

  • Latitude 5430
  • Latitude 5440
  • Dell U3224KB Monitor

Cause

This happens because Ubuntu version 20.04 LTS does not support a refresh rate above 5120x2160 120 Hz.

Resolution

Resolution and Refresh Rate

To resolve this behavior, update to Ubuntu version 22.04 LTS. If you are unable to update to version 22.04 LTS, change the resolution and refresh rate to 5120x2160 60 Hz or below.


Back to Top

Article Properties

Affected Product

Latitude 5440, Latitude 5430, Dell U3224KB

Last Published Date

20 Feb 2024

Version

1

Article Type

Solution

Back to Top