I have a laptop ThinkPad Edge E430, with Xubuntu 12.04.4 LTS installed on it. I'm using wicd to manage my networks. My wired network works just fine, but I can't detect any wireless network ("no wireless networks found") although I've checked that there were several wireless networks available nearby (I have a dualboot with windows).

I've reinstalled the wicd, just for case:

sudo apt-get install --reinstall wicd

I've tried this great AskUbuntu troubleshooting answer [My WiFi adapter is not working at all, how to troubleshoot?]:

I've installed all updates. I've checked my network with lshw:

sudo lshw -C network



*-network               

   description:   Wireless interface

   product:       BCM4313 802.11bgn Wireless Network Adapter

   vendor:        Broadcom Corporation

   physical id:   0

   bus info:      pci@0000:03:00.0

   logical name:  eth2

   version:       01

   serial:        08:3e:8e:a2:91:9f

   width:         64 bits

   clock:         33MHz

   capabilities:  pm msi pciexpress bus_master cap_list ethernet physical wireless

   configuration: broadcast=yes driver=wl0 driverversion=6.20.155.1 (r326264)

                  latency=0 multicast=yes wireless=IEEE 802.11abg

   resources:     irq:17 memory:f2d00000-f2d03fff

I ran rfkill for possible software and hardware switches:

rfkill list



0: tpacpi_bluetooth_sw: Bluetooth

   Soft blocked: no

   Hard blocked: no

1: phy0: Wireless LAN

   Soft blocked: no

   Hard blocked: no

2: brcmwl-0: Wireless LAN

   Soft blocked: no

   Hard blocked: no

I figured out that I have "hardware requiring special care" as mentioned at the bottom of the post so I followed attached link [Installing Broadcom Wireless Drivers].

My wireless card is:

lspci -nn -d 14e4:



Broadcom Corporation BCM4313 802.11bgn Wireless Network Adapter [14e4:4727] (rev 01)

So the table suggested me to install bcmwl since my kernel version is 3.2.0-67-generic.

sudo apt-get install bcmwl-kernel-source



bcmwl-kernel-source is already the newest version.

I've rebooted my PC.

And now I'm stuck.
Can you help me solve the wireless network issue or at least locate the problem? Is it driver issue? Is it wicd issue? Is it bfu user issue?