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I know there are a lot of posts like this one, but I have not succeeded yet!

I just installed 12.04. At the beginning, the network manager was not showing the wireless networks. The output of lspci -vvnn | grep 14e4 is the following:

02:00.0 Network controller [0280]: Broadcom Corporation BCM4313 802.11b/g/n Wireless LAN Controller [14e4:4727] (rev 01)

After reading some posts in this forum, I did this:

  1. Removed "bcmwl-kernel-source" using Synaptic Package Manager;
  2. installed "firmware-b43-installer" and "b43-fwcutter" again by Synaptic Package Manager.

Now, I am able to see all available wireless networks, but it never connects successfully. The wireless icon stays blinking for awhile before saying "Wireless Network - Disconnected".

Also, I never could do the thing with "Additional Drivers". I always get an error. This is the log:

FATAL: Module wl not found.
update-initramfs: deferring update (trigger activated)
Processing triggers for initramfs-tools ...
update-initramfs: Generating /boot/initrd.img-3.8.0-29-generic

2013-08-28 21:50:55,489 WARNING: modinfo for module wl failed: ERROR: modinfo: could not find module wl

2013-08-28 21:50:55,490 WARNING: /sys/module/wl/drivers does not exist, cannot rebind wl driver
2013-08-28 21:50:55,532 DEBUG: BroadcomWLHandler enabled(): kmod disabled, bcm43xx: blacklisted, b43: blacklisted, b43legacy: blacklisted
2013-08-28 21:51:20,917 DEBUG: BroadcomWLHandler enabled(): kmod disabled, bcm43xx: blacklisted, b43: blacklisted, b43legacy: blacklisted
2013-08-28 21:51:20,942 DEBUG: BroadcomWLHandler enabled(): kmod disabled, bcm43xx: blacklisted, b43: blacklisted, b43legacy: blacklisted
2013-08-28 21:51:20,974 DEBUG: BroadcomWLHandler enabled(): kmod disabled, bcm43xx: blacklisted, b43: blacklisted, b43legacy: blacklisted

I don't know anymore if I am supposed to install the module wl or not.

Thank you for your thoughts.

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1 Answer 1

up vote 2 down vote accepted

Getting this device 14e4:4727 working properly in 12.04 is indeed challenging. I recommend you do not install the STA driver from 'Additional Drivers' and if it is installed now, remove it:

sudo apt-get remove --purge bcmwl-kernel source
sudo modprobe -r wl
sudo rm /etc/modprobe.d/blacklist-bcm43.conf

If that file doesn't exist, that's fine, just proceed.

sudo modprobe brcmsmac

Now does your wireless work as expected? If not, let's try a newer driver. With a temporary wired ethernet connection,do:

sudo apt-get install linux-backports-modules-cw-3.3-precise-generic

Detach the ethernet and reboot.

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Thank you. It is actually working. –  Rafael Angarita Arocha-Lessman Aug 28 '13 at 21:39
1  
With or without istalling backports?? –  chili555 Aug 28 '13 at 21:45
    
I installed backports. I did everything you said and it started working :) however, sometimes it disconnects and I have to click again my wireless network to make it work. It was already like that when I had Debian, so I am kind of used to it –  Rafael Angarita Arocha-Lessman Sep 1 '13 at 10:31

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