I have quite a few Lenovo ThinkPad X1 Carbon laptops connected to Thunderbolt 3 Docking Stations running Windows 10 Pro Version 1803 (OS Build 17134.285).
When powered on with no Ethernet cable attached to the docking station the WiFi starts perfectly. When connected to the Lan at startup no WiFi is connected as desired. Disconnecting and reconnecting the Lan cable causes the WiFi connection to behave properly – on or off as it should be. However, after a period of time while connected to the Lan, the WiFi connects again so that both Lan and Wan are connected simultaneously.
Steps taken so far:
Went in to ThinkPad Bios and Enabled Wireless Auto Disconnection and set Thunderbolt Security to No Security
Set Network Provider Order as follows :
Microsoft Windows Network
Web Client Network
Microsoft Remote Desktop Session Host Server Network Provider
Updated to the latest firmware/drivers:
Lenovo ThinkPad X1 Carbon 6th Generation System Firmware 1.37 – Driver 220.127.116.11 – Date 2/19/2019
Intel® Dual Band Wireless-AC 8265 - Driver 18.104.22.168 – Date 6/1/2017
ThinkPad TBT 3 Dock Ethernet - Driver 10,30.116.2019 – Date 1/16/2019
Tried turning off TCP/IP v4 (not using v6) Automatic metric and manually setting to 5 for Lan and 35 for Wi-Fi.
Any other ideas?
Thanks Leonardo, The connection is set to connect automatically. When I set it to manual it only connects when they connect it. We are a hospital and many users use both connections through out the course of the day. It would be nice, for ease of use, for it to be able sense what connection to use. I see that some Nics have a setting to only connect when not connected to the Lan. When set to automatically connect it behaves that way for a while. Only after a while do both connections remain active.
I got my re-imaged Lenovo laptop back this morning. I installed the ThunderBolt software and I downloaded the latest updates for the laptop via Microsoft Updates. I have the latest WiFi driver we spoke about (22.214.171.124) installed. I updated to the latest firmware and/or drivers available for the Laptop, Thunderbolt docking station, Ethernet, and WiFi. I ran another SSU report after all of this was done (see attached). I’ve connected and disconnected the LAN Ethernet cable several time and the WiFi connected and disconnected as desired. The problem occurs after its connected to the Lan for a while and the WiFi automatically fires back up. I am monitoring today to see if that happens.