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Article Number: 000133016

Garbled characters on Monitor screen when resuming from sleep using the HDMI and Dell Docking Station TB16 / TB18DC / WD19TB / WD19DC / WD19TBS / WD19DCS

Summary: Monitor connected to HDMI port on Dell TB16 Dock experiences distortion after resuming from sleep.

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

On systems with KabyLake (KBL) processors, when you connect a Dell Docking Station TB16 / TB18DC / WD19TB / WD19DC / WD19TBS / WD19DCS to a monitor using the HDMI port, the monitor may display garbled characters randomly on the left of the Dell splash screen within 2 s when system resumes from an S4/S5 power state.

The issue is related to a Dynamic CD clock implementation change that causes the issue.

Cause

NA

Resolution

Workaround Solution

Workaround: You can work around the issue by unplugging then reconnecting either the TB16 / TB18DC / WD19TB / WD19DC / WD19TBS / WD19DCS USB Type-C connection to the system, or the HDMI monitor cable connection to the TB16 / TB18DC / WD19TB / WD19DC / WD19TBS / WD19DCS dock.

You can resolve this issue by updating the system BIOS to the most current version available from Dell Support/Drivers & Downloads. Make sure your system model and operating system are correct, choose BIOS from the Category drop-down menu, and download and install the latest available BIOS update that appears.

Article Properties

Affected Product

Dell Thunderbolt Dock TB16, Dell Performance Dock - WD19DC

Product

Dell Precision Dual USB-C Thunderbolt Dock - TB18DC, Dell Performance Dock – WD19DCS, Dell Thunderbolt Dock - WD19TB, Dell Thunderbolt Dock – WD19TBS

Last Published Date

16 feb. 2024

Version

6

Article Type

Solution

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