Dell WD19 User Manual page 30

Symptoms
8. Cable LED is not ON after it is connected to your host.
9. USB port has no function in a pre-OS environment.
10. PXE boot on dock does not function.
11. USB Boot does not function.
12. AC Adapter is displayed as "Not Installed" in the Battery
Information page of the Dell BIOS Setup when the Type-C cable is
connected.
13. Peripherals connected to the docking station do not work in a
pre-OS environment.
14. Alert message "You have attached an undersized power adapter
to your system" is displayed when the docking station is connected
to your computer.
15. Undersized power adapter warning message displayed and cable
LED is off.
16. No external display. USB or data and cable LED is off.
17. When system or dock is moved the cable LED turns off.
18. With Ubuntu 18.04, WIFI will be turned off when the docking
station is connected to the system and the WIFI turns On again
after rebooting the system.
30 Troubleshooting the Dell Docking Station WD19
Suggested solutions
• Make sure the WD19 is connected to AC power.
• Make sure the laptop is connected with the docking station. Try
to disconnect and re-connect again with the docking station.
• If your BIOS has an USB Configuration page, please make sure
the following options are checked:
• 1. Enable USB Boot Support
• 2. Enable External USB Port
• If your BIOS has an integrated NIC page, please select Enabled
w/PXE.
• If your BIOS Setup on your computer has an USB Configuration
page, please make sure the following options are checked:
• 1. Enable USB Boot Support
• If your BIOS has an USB Configuration page, please make sure
the following options are checked:
• 1. Enable USB Boot Support
• 2. Enable External USB Port
• 1. Make sure the Dell Docking Station WD19 is connected
properly to its own adapter (130 W or 180 W).
• 2. Make sure the cable LED of your docking station is ON.
• 3. Disconnect and then re-connect the (Type-C) cable to your
computer.
• If the BIOS Setup on your computer has an USB Configuration
page, check the following option to enable docking station
function in a pre-OS environment:
• Enable External USB Port
• Make sure the docking station is connected properly to its own
power adapter. Computer requiring more than 130 W power
input must also be connected to their own power adapter for
charging and operating at full performance.
• First power off the docking station by disconnecting the Type-C
cable and then removing power adapter from the dock. Then,
power on the docking station by connecting the power adapter
to the dock before connecting the Type-C cable to your
computer.
• The docking connector has disconnected from the system's
USB ports. Please reconnect the docking cable from the
system, wait for 15 seconds or more, and then dock again.
• The docking connector has disconnected from the system's
USB ports. Please reconnect the docking connector.
• Undock and reboot the system if, the above steps do not work.
• Avoid moving the system/dock when the docking cable is
connected to the system.
• Please uncheck the option Control WLAN radio in BIOS.