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

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new 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

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