Ask Ubuntu is a question and answer site for Ubuntu users and developers. It's 100% free.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

Possible Duplicate:
How to Install Broadcom / STA Wireless card (BCM43XX)
Can’t connect to any wireless connection after updating

I am using Ubuntu 12.10 64bit. It was just fine till linux kernel 3.5.0-19. But as soon as I upgraded my system to linux 3.5.0-20, it simply stopped identifying wireless networks in network drop down menu. It continued through -21 and -22. Today only I again installed the updates and linux kernel got upgraded to linux 3.5.0-23. But to my surprise the problem continues in -23 too. Whenever I boot linux 3.5.0-19 (from boot menu advanced options) then only my system identifies the surrounding wireless networks. Please help.
Output of lspci -nnk | grep -iEA3 "(wireless|network)" in linux 3.5.0-19 :

12:00.0 Network controller [0280]: Broadcom Corporation BCM4313 802.11b/g/n Wireless LAN Controller [14e4:4727] (rev 01)  
Subsystem: Dell Inspiron M5010 / XPS 8300 [1028:0010]  
Kernel driver in use: wl  
Kernel modules: wl, bcma

Output of the same script in -23 is :

12:00.0 Network controller [0280]: Broadcom Corporation BCM4313 802.11b/g/n Wireless LAN Controller [14e4:4727] (rev 01)  
Subsystem: Dell Inspiron M5010 / XPS 8300 [1028:0010]  
Kernel modules: bcma  
13:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller [10ec:8136] (rev 02)
share|improve this question

marked as duplicate by gertvdijk, Andrea Corbellini, Luis Alvarado, hhlp, belacqua Feb 5 '13 at 17:30

This question was marked as an exact duplicate of an existing question.

    
Welcome to Ask Ubuntu! Please provide more specific information about the wireless LAN hardware involved. For example, include the output of lspci -nnk | grep -iEA3 "(wireless|network)" run from a terminal. It's also very likely to be a bug. And bugs are off-topic here as per the FAQ. – gertvdijk Feb 5 '13 at 11:08
    
Hi @gertvdijk, I have included the output of above mentioned script. Please have a look. – rootkea Feb 5 '13 at 12:12
    
Good. Your question seems to be regarding the "famous" BCM4313 card which is being asked about very very regularly here. Let me find the right duplicate. – gertvdijk Feb 5 '13 at 12:15
    
This links provides more comprehensive answers and is protected and kept updated askubuntu.com/questions/55868/… – Chris Carter Feb 5 '13 at 13:54
    
@ChrisCarter No it isn't updated as that Q does not address the recent change in the kernel causing this. Moreover, that Q&A is a very long list of answers, of which a lot does not apply anymore or is for unrelated hardware. – gertvdijk Feb 5 '13 at 15:28