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Wireless doesn't work on a Broadcom BCM4312

I have a problem connecting my Dell Vostro 1520 to the Internet by Wireless. The output of rfkill list is

0: hci0: Bluetooth Soft blocked: no Hard blocked: no 1: brcmwl-0: Wireless LAN Soft blocked: no Hard blocked: no 2: dell-wifi: Wireless LAN Soft blocked: yes Hard blocked: yes 3: dell-bluetooth: Bluetooth Soft blocked: no Hard blocked: no

I've tried other solutions like /etc/modprobe.d$ sudo gedit blacklist.conf and blcklisting the 43xx part, also tried getting sudo apt-get install firmware-b43-installer and sudo apt-get install b43-fwcutter and at last I've tried installing th privative(?) drivers for the Wireless Card. (Broadcom STA Wireless Driver). The result of lspci is 0e:00.0 Network controller: Broadcom Corporation BCM4312 802.11b/g LP-PHY (rev 01)

It's obvious I've the switch turned on, but it says that wireless is disabled by harware switch and when I enter System Settings/Network/ the Airplane Mode is turned on and when I turn it off and try to turn on the Wireless button, it goes to the "off" position automatically. Thanks for the help.

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Please see - askubuntu.com/q/125529/35775 –  Web-E Jun 20 '12 at 15:02
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marked as duplicate by fossfreedom Jun 20 '12 at 20:45

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1 Answer

You need to install either "b43-fwcutter/firmware-b43-installer" or "Broadcom STA proprietary restricted driver).

Try the first response in the link : How do I get a Broadcom BCM4313 wireless card working? Make sure Broadcom STA restricted driver is purged => "sudo apt-get purge bcmwl-kernel-source broadcom-sta-common broadcom-sta-source".

I had the same issue, and in my case the Broadcom card is 4327, which is troublesome and works only with Broadcom restricted driver. The broadcom restricted driver is buggy , and freezes the screen. I wouldn't recommend this approach.

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