[HP Elitebook 8540p] Disabling LAN/WLAN switching in BIOS doesn't work

[Hoffelhas]

Hello all, I have a very annoying issue.

First of all, I have a HP Elitebook 8540p running on windows 7. I noticed that every time a wired connection was made, my wireless connection stopped working. If I removed the wired connection, my wireless came back to life again.

Now (after a lot of time) I know that this is an in-built feature apparantly to save battery life. However, my problem is that even if I go into the BIOS (latest version F.21) and I uncheck LAN/WLAN switching it STILL doesn't work. 

At the moment, LAN/WLAN switching has been unchecked in my BIOS, but if I make a wired connection my wireless still dies. 

I have spent too much hours on this problem and I stil have no clue whatsoever what I have to do. I would like your help very much.

[Paul_Tikkanen]

Hi:

Are you making sure you hit the F10 key to save the changes both at the point where you made the change, and when you exited the BIOS to save your settings and exit? 

You need to save any changes in both places.

If you are doing that, then I have no idea why the changes aren't being saved.

Paul

[Mark_De_R]

Hi,

Sorry to revive this thread, but I am having the same problem: LAN/WLAN switching is off in the BIOS (saved, verified) but still the WLAN connection drops when LAN is connected.

When LAN is connected, the HP Connection Assistant still says WLAN is on (when LAN/WLAN switching is enabled, it says WLAN is disabled by that).

I have an Elitebook 8560w with latest BIOS (F.28) running Windows 7 Home Premium. Network hardware is: Intel 82579LM (LAN) and Intel Centrino Advanced-N 6205 (WLAN). I have installed the latest drivers from the HP website.

Also for me this has taken too many hours by now, so please help.

Regards,

Mark

(post edit) Forgot to mention: I have checked the settings under the 'Advanced'-tab in the Windows device manager for both interfaces, but there is no option to influence this behaviour. Also various driver versions don't have any effect on the behaviour nor the availability of a setting for this.

[Mark_De_R]

With the help of the supplier of my notebook the issue has been resolved.

The software SecureW2, which is used for authentication on the WLAN at my university, caused the problem. Apparently it's background service turned the wireless network off when a wired network was connected. Disabling the service fixed the issue and I'm still able to use the university WLAN.

Hope this info helps others with the same issue.

[Hemsoe]

Hi..

A small note...

I had some issues connection to wireless after installing the Intel Proset wifi appl.

Uninstalling it helped with that..

Both I still can't use dual network.

Dan Hemsoe

[techmi26]

I know this is an old forum but I wanted to chime in and let others know what solved the issue I was having.

When I was connected to a wireless network and then plugged in a network cable it would disable the wireless adapter. The fix was to go into the Power Options in Control Panel and change the plan from the HP optimized plan to the default Windows "balanced" plan.

[rhillman]

Hello,
This is a shot in the dark but I will throw this out there. We too use 1040 G1's in our company with a custom image using Win7 Enterprise. The issue we have been having is switching from LAN to WLAN and then back to LAN via the docking station. When the user is at a meeting on the WLAN and then comes back to the office to dock the laptop, they do not get an address via DHCP off the LAN. They would always get a 169 address.
What I discovered was that the Power Management feature within the NIC properties was checked. In other words: Network and Sharing-Change adapter settings-Properties (Local Area Connection or Wireless)-Configure-Power Management-Allow the computer to turn off this device to save power
I unchecked that feature and it allowed the switching to take place from LAN to WLAN and back again. It appears that this feature puts the NIC to sleep and does not wake back up without manual intervention.
Let me know if this helps you or perhaps puts you on a path that could lead to some clues.
Bob

[Djake101]

I tried disabling LAN/WLAN switching in the BIOS but its not possible, since the box is permanently checked and can't be unchecked.

How do I go about this because I want to make my laptop a hotspot with my LAN connection.

Thanks.