Settings has three displays when an external monitor is connected to a Dell Pro 7-in-1 USB-C Travel Hub DA310 via HDMI or Type-C to DisplayPort dongle

Summary: This article provides information about Display settings showing three monitors when using a Dell Pro 7-in-1 USB-C Travel Hub DA310 with an HDMI connection or a Type-C to DisplayPort (DP) dongle in nVidia GPU only mode. ...

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Symptoms

External monitor cannot show video when the Display setting shows an extra monitor.

Affected Models:

  • Alienware m15 R7
  • Dell G15 5520
  • Dell G15 5521 Special Edition
  • Dell G16 7620

Cause

The computer BIOS and Thunderbolt controller send the Hot Plug Detect (HPD) notification/assertion in this condition to the graphics card for headset display detection when the issue occurs.

Resolution

NVIDIA Video Driver

To resolve this issue, update the NVIDIA video driver to version 528.79 or newer.

Workarounds

If you are unable to update the video driver, the following workarounds can be used to solve this behavior.

  1. Unplug then re-plug in the external monitor.
  2. Change the display mode to "Automatic Select" or "Optimus" mode in the NVIDIA control panel.
    NVIDIA Control Panel

Affected Products

Alienware m15 R7, Dell G15 5520, Dell G15 5521 Special Edition, Dell G16 7620, Dell Pro 7-in-1 USB-C Travel Hub DA310
Article Properties
Article Number: 000202099
Article Type: Solution
Last Modified: 15 May 2026
Version:  6
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