Dell Display Manager Application Will Not Work On A USB Only Connection
Summary: This article contains information regarding Dell Display Manager errors received when a USB-only monitor is connected to the computer.
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Symptoms
When a system is connected to a monitor via a USB connection only (instead of VGA, DVI, DisplayPort etc.), the following error will appear if the Dell Display Monitor (DDM) application is launched (Figure 1):
Figure 1: Dell Display Manager Error
Cause
The Dell Display Manager application relies on Display Data Channel (DDC) information. This information is not passed through a USB connection.
Resolution
In order to get the Dell Display Manager application to work correctly, the monitor must be connected a digital DDC-supported video cable like DVI-D, DVI-I, HDMI, DisplayPort (DP or mDP), or USB-C (that supports DisplayPort or Thunderbolt 3).
- Connect the monitor to the computer using a DVI-D, DVI-I, HDMI, DisplayPort (DP or mDP), or USB-C (that supports DisplayPort or Thunderbolt 3) cable.
- Download and install the latest device drivers. See the Dell knowledge base article How to Download and Install the drivers on a Dell Computer.
- If the above steps does not resolve the issue, contact Dell Technical Support for assistance.
Article Properties
Article Number: 000141892
Article Type: Solution
Last Modified: 04 Mar 2021
Version: 4
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