Dell U2724DE - Page 96

96 | Troubleshooting
Problem What you
experience
Possible solutions
Ethernet port
(RJ45) cannot
connect to
internet
Ethernet port
(RJ45) cannot
connect to
internet on Win
10 / Win 11
Change the LAN Controller Power Saving from
Enable to Disable
The LAN port is
not functioning
OS setting
or cable
connection
issue
•Ensure that the latest BIOS and drivers for your
computer are installed on your computer.
•Ensure that the RealTek 2.5 G Ethernet
Controller is installed in the Windows Device
Manager.
•If your BIOS Setup has a LAN/GBE Enabled/
Disabled option, make sure it is set to Enabled.
•Ensure that the Ethernet cable is connected
securely on the monitor and the hub/router/
rewall.
•Check the status LED of the Ethernet cable to
conrm connectivity. Re-connect both ends of
the Ethernet cable if the LED is not lit.
•First power o the Computer and unplug the
Thunderbolt
TM
4 cable and power cord of the
monitor. Then, power on the computer, plug in
the monitor power cord and Thunderbolt
TM
4
cable.
Ambient light
detection
anomaly
When Auto
Brightness is on,
the detected
ambient
light drops
significantly
•Check whether an object is obstructing the
sensor area.
•Ensure a webcam is not mounted over the
sensor area.
•Wipe clean any dust that may be covering the
sensor area.
•Ensure the display is not pivoted and placed to
another monitor side-by-side.