[Trilug-ontopic] Wireless is dead after closing laptop lid

Brandon T Stone brandon.stone at duke.edu
Mon Jun 21 08:44:44 EDT 2010

a couple of things to try:
first run iwconfig from a terminal.  You should see a listing for your 
wireless, probably wlan0. 
If that works, try: iwlist scan this will find networks available for 

If now wireless shows up with iwconfig, run dmesg in a terminal.  There 
may be an error preventing your wireless driver from loading.  Some 
wireless drivers in linux conflict and you may have to blacklist one in 
order to get yours working.

Also try lsusb (if external usb dongle) or lspci (if internal card) to see 
if your network adapter is being seen at all.  These commands will give 
you better information about your wireless hardware, which you can search 

Brandon Stone
Web Applications Developer
Department of Web and Technology Solutions
Duke University School of Nursing
o. 919-668-2333
e. brandon.stone at duke.edu

Ivan Panarusky <panaruskyi at gmail.com> 
Sent by: trilug-ontopic-bounces at trilug.org
06/21/10 02:24 AM
Please respond to
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[Trilug-ontopic] Wireless is dead after closing laptop lid

So I had just gotten to my Grandma's house and booted up my laptop. Her 
wireless is setup with broadcast ssid, mac address filtering, and no 
encryption. (don't bug me about this, it's the best I could do to keep a 
squeezebox working) I logged into her router, and added my mac address to 
the allowed list and pulled up the list of wireless networks on my laptop. 
I noted that her network, and an additional encrypted one (neighbor) 
showed up on the list. I selected her network, and connected without a 

Shortly thereafter, I closed my laptop's lid. A minute or two later, I 
opened it again, but it didn't reconnect to wireless as it usually does. 
Instead, no wireless networks showed up whatsoever. I tried rebooting the 
computer multiple times, and reinstalling the broadcom driver, but I still 
can't get wireless to connect at all. It won't show the list of available 
networks, nor will it connect if you enter the ssid manually. (It appears 
to try though) The wired connection works fine though.

I know that I didn't accidentally disable the wireless card, because it 
clearly says when I do. I also don't believe that it's a problem with her 
router, because the squeezebox still works, and the neighbors connection 
should still be showing up anyway.

I'm not sure if this is a hardware failure, but that is unlikely as this 
laptop is about a week old. I have a Dell Studio 14z (1440) running Ubuntu 


Wake up and smell the ashes.
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