No Video During BitLocker Pin Screen Using a WD19 or WD22 Dock with a Belkin UN-3 KVM

Summary: Learn to resolve no video on a BitLocker pin screen when using a WD19 or WD22 dock and a Belkin UN-3 KVM (keyboard, video, mouse) device.

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Symptoms

The BitLocker pin screen may not display on a full high-definition (FHD) external display that is connected to a Belkin KVM while using a DisplayPort (DP) cable from the docking station with the laptop lid closed. This affects Belkin devices in the UN-3 family.

Affected Platforms:

  • Latitude 5320
  • Latitude 5430
  • Latitude 9420
  • Precision 3470
  • XPS 17 9700

Affected Docks:

  • WD19DCS - Dell Performance Dock
  • WD22TB4 - Dell Thunderbolt Dock

The FHD external displays show the BitLocker pin screen if either the docking station or the Belkin UN-3 KVM is disconnected. The BitLocker pin screen also displays if an FHD monitor is directly connected to the computer.

Cause

This is expected behavior due to a KVM limitation.

Resolution

There are several possible resolutions for this.

  • Type in the PIN for BitLocker during the blank screen and then press Enter.
  • When using FHD external display connected to the KVM Console Out, connect the dock to the Belkin KVM UN-3 using HDMI instead of DP.
  • Use monitors with a display resolution that is greater than 1920x1080.

Affected Products

Dell Performance Dock – WD19DCS, Latitude 5320, Latitude 9420, Latitude 5430, Precision 3470, Dell Thunderbolt Dock – WD22TB4, XPS 17 9700
Article Properties
Article Number: 000206493
Article Type: Solution
Last Modified: 05 May 2025
Version:  6
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