cancel
Showing results for 
Search instead for 
Did you mean: 
Reply
jeffpass
Fanfold Paper
Posts: 11
Registered: ‎02-20-2013
Location: Springfield, IL
Views: 1,066
Message 1 of 6

Lenovo T420 - wireless card keeps turning off / not recognized

Hi,

Have had this new Lenovo T420 laptop for several weeks now, and the wireless card which worked fine at first keeps deactivating.   The tiny switch on the lower right side of the laptop is turned on, and if I right-click the network icon on my taskbar 'Enable Wireless' shows checked.   But the card is obviously not activated.
Function-F5 also seems to make no difference.   Is this a faulty, dead card or some other setting I am missing?
Thanks much for any help.

Retired Support Specialist
Posts: 1,291
Registered: ‎12-06-2012
Location: Raleigh, NC
Views: 1,052
Message 2 of 6

Re: Lenovo T420 - wireless card keeps turning off / not recognized

Hi, jeffpass

 

I would check Device Manager and see if the card is recognized there when the card turns itself off. It should be under the Network Adapters tree. I would also recommend making sure the BIOS and wireless drivers are up to date just to be sure. Both of those can be found here. Also, one question: what operating system are you currently running?

 

Best,

Adam

______________________________________________________________________________________________________________
Did someone help you today? Press the star on the left to thank them with a Kudo!

If you find a post helpful and it answers your question, please mark it as an "Accepted Solution!" This will help the rest of the community with similar issues identify the verified solution and benefit from it.
Community SeniorMod
Community SeniorMod
Posts: 8,982
Registered: ‎01-01-2010
Location: US
Views: 1,034
Message 3 of 6

Re: Lenovo T420 - wireless card keeps turning off / not recognized

look in device manager. Select network adapters. Double-click the wireless card. Under the power management tab, unclick the option to allow the computer to turn off the device to save power.

Rich


I do not respond to requests for private, one-on-one help. Your questions should be posted in the appropriate forum where they may help others as well.

If a response answers your question, please mark it as the accepted solution.

I am not an employee or agent of Lenovo.
jeffpass
Fanfold Paper
Posts: 11
Registered: ‎02-20-2013
Location: Springfield, IL
Views: 1,023
Message 4 of 6

Re: Lenovo T420 - wireless card keeps turning off / not recognized

Hi, running Open Client Red Hat 64.    I've already ok'd to be moved to the Linux discussion forums if it helps, however, this looks like something to do with the hardware itself......as I've seen other reports of this happening on the web with Windows.

I do have Windows Virtual 7 running on the machine also, and do have Device Manager there.  It shows two adapters, AGN Virutal Network adapter and Red Hat VirtIO Ethernet Adapter.  Both are enabled and running.
Yet the icon in the lower right indicating signal strength that one was (when wireless was active) still not there, and if I unplug the landline, I lose network.   
Is there a way to turn it on in the BIOS maybe?  Thanks.

jeffpass
Fanfold Paper
Posts: 11
Registered: ‎02-20-2013
Location: Springfield, IL
Views: 1,021
Message 5 of 6

Re: Lenovo T420 - wireless card keeps turning off / not recognized

Hi,


I have looked in Virtual Windows 7 and there is no Power Management tab under Device Manager.
There is a Power Options item in the Control Panel but it only allows you to check or uncheck "High Performance".   HP is currently checked :/

Guru
Posts: 9,598
Registered: ‎12-26-2009
Location: CA
Views: 1,007
Message 6 of 6

Re: Lenovo T420 - wireless card keeps turning off / not recognized

Maybe the physical switch is just loose? =/

W520: 2960XM, Q2000M @ 1091/1380, 32GB RAM, 500GB&750GB HDD & 500GB SSD, FHD&MB168B+
X61T: L7500, 4GB RAM, 500GB HDD, XGA screen, Ultrabase
W550s: 5600U, K620M at 1164/1281, 16GB RAM, 512GB SSD, 3K touchscreen
X200s: SL9400, 6GB RAM, 64GB SD card, WXGA+ screen
TPT1: 1839-23U

Check out current deals!


Shop current deals

Top Kudoed Authors