Graphics Issue on Precision Xeon Mobile Workstations Connected to a WD19TB or WD19TBS Dock

Using 4K graphics through a Thunderbolt dock is a problem on Precision laptops with Intel Xeon CPUs. Precision laptops may see video issues when configuring the laptop for an attached 4K screen.

Precision laptops that use the Intel Xeon Processor may experience limitations with the total display output available using a thunderbolt docking station. This only occurs when trying to drive high display resolutions. (For example: 4K.)

Affected Platforms:

• Any Precision Mobile Workstation that ships with an Intel Xeon Processor.

Affected Dell Peripheral Devices:

• Dell Performance Dock: WD19DC and WD19TBS
• Dell Precision Dual USB-C Thunderbolt Dock: TB18DC
• Any Dell 4K Monitor

As the Intel Xeon Processor does not include integrated graphics. Issues are experienced when raising the display resolution to 4K, without specifying discrete graphics support.

Change from using Switchable Graphics to the Discrete Graphics Controller Output Mode under the video settings in the system BIOS:

1. Restart the laptop and tap rapidly on the F2 or F12 key when the Dell Splash Screen appears:

   • F2 should open the BIOS setup screens.

   • F12 should open a boot once menu to select BIOS Setup from the on-screen menu.

2. Navigate down to Video.

3. Select Switchable Graphics.

4. Change the tick mark from Switchable Graphics to Discrete Graphics Controller Output Mode.

5. Click Apply and Save Changes and Exit.

6. The laptop starts booting to the operating system.

If experiencing a different Graphics issue, use the following link to troubleshoot the problem further:

• Monitors and Screens