Dell Inspiron 1525 Wi-Fi card doesn't work. Broadcom BCM4312 802.11b/g LP-PHY (rev01) // Dell Wireless 1395 Wlan Mini-card

[[e-mail]]

After upgrade to the newest 4.2 kernel, wifi stopped and can't be turned on.

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: bcmwl-kernel-source 6.30.223.248+bdcom-0ubuntu2
Uname: Linux 4.2.0-040200-generic i686
ApportVersion: 2.17.2-0ubuntu1.4
Architecture: i386
CurrentDesktop: MATE
Date: Mon Sep 21 22:28:12 2015
InstallationDate: Installed on 2015-09-19 (2 days ago)
InstallationMedia: Ubuntu-MATE 15.04 "Vivid Vervet" - Release i386 (20150422.1)
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=bg_BG.UTF-8
 SHELL=/bin/bash
SourcePackage: bcmwl
UpgradeStatus: No upgrade log present (probably fresh install)

[[e-mail] (tivelinovramis)]

How to fix it guide!

Uninstall the bcmwl-kernel-source package by issuing the following command on a terminal:

sudo apt-get remove bcmwl-kernel-source
make sure that the firmware-b43-installer and the b43-fwcutter packages are installed (of course you will need internet by others means):

sudo apt-get install firmware-b43-installer b43-fwcutter
type into terminal:

cat /etc/modprobe.d/* | egrep 'bcm'
(you may want to copy this) and see if the term 'blacklist bcm43xx' is there

if it is, type cd /etc/modprobe.d/ and then sudo gedit blacklist.conf

put a # in front of the line: blacklist bcm43xx

reboot