Latitude E6540/E6440 will not restore the Enable Wireless Radio setting if rebooted with Ethernet connected

The Dell Latitude E6540/E6440 not restoring the Enable Wireless Radio setting if rebooted with Ethernet connected. Follow the steps outlined in this article to resolve the issue.

Latitude E6540/E6440 will not restore the Enable Wireless Radio setting if rebooted with Ethernet connected

If the Latitude E6540/E6440 has the Ethernet cable plugged in while either docked or undocked, the Enable wireless radio setting may not restore when the laptop is rebooted and the Ethernet cable is removed. If the Unified Wireless Application panel is loaded before disconnecting the Ethernet or undocking, or if the system is rebooted while connected to a wireless network, then the Enable wireless radio setting will remain checked.

On Latitude E6540 and E6440 laptops with the DW1506 wireless adapter installed, the Dell Unified Wireless application manages wireless functionality whenever the system is connected to an Ethernet connection. The Enable wireless radio and Disable wireless LAN when LAN is connected settings should automatically reset whenever an Ethernet cable is connected or disconnected to the laptop.

Dell Unified Wireless Application settings:

Install the latest Dell Wireless 1506 WiFi driver to resolve the issue

To resolve this issue and ensure the wireless network settings function normally, follow the steps below to install the latest Dell Wireless 1506 WiFi driver:

1. Browse to the Drivers and Downloads site for your system.
2. Select Network from the Category list.
3. Click the Download File link under Dell Wireless 1506 WiFi Driver to download and install the updated driver. Version 10.0.0.315,A03 or later contains the fix for the wireless LAN settings.

If the issue still isn't resolved, contact Dell Technical Support using the following link: Dell Technical Support Contact.