Dell UltraSharp 27 User Manual page 96

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