Chapter 11: Troubleshooting The Dell Universal Dock Ud22; Symptoms And Solutions - Dell UD22 User Manual

Troubleshooting the Dell Universal Dock
UD22
Topics:
●

Symptoms and Solutions

Symptoms and Solutions
Table 12. Symptoms and solutions
Symptoms
1. No video on the monitors that are attached to the
HDMI or DisplayPort (DP) port on the docking station.
2. The video on the attached monitor is distorted or
flickering.
Suggested solutions
●
Ensure that the latest BIOS and drivers for your system and
the docking station are installed on your system.
● Ensure that your system is connected to the docking station
securely. Try to disconnect and reconnect the docking
station to the computer system.
●
Disconnect both ends of the video cable and check for
damaged/bent pins. Securely re-connect the cable to the
monitor and docking station.
●
Ensure the video cable HDMI, DisplayPort, or USB Type-C is
connected properly to the monitor and the docking station.
Ensure to select the correct video source on your monitor
(see your monitor's documentation for more information
about changing the video source).
●
Check the resolution settings on your system. Your monitor
may support higher resolutions than what the docking
station can support. See the Display Resolution Table for more
information about maximum resolution capacity.
●
If your monitor is connected to the docking station, the video
output on your system may be disabled. You can enable the video
output using the Windows Control Panel or see the User Guide of
your system.
●
If only one monitor is shown, while the other is not, go to Windows
Display Properties, and under Multiple Displays,
select the output for the second monitor.
●
Using Intel graphics and using the system LCD, only two additional
displays can be supported.
●
For NVIDIA or AMD discrete graphics, the dock supports three
external displays plus the system LCD.
●
Try with a different monitor and cable that is known to be good, if
possible.
●
Reset the monitor to Factory Defaults. See the User Guide
of your monitor for more information about how to reset the
monitor to factory defaults.
●
Ensure that the video cable HDMI, DisplayPort, or USB Type-C is
connected securely to the monitor and the docking station.
● Disconnect and reconnect the monitor/s from the docking
station.
●
First power off the docking station by disconnecting the
USB Type-C cable and then removing the power adapter from the
dock.
Troubleshooting the Dell Universal Dock UD22 26
11