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[Nehal Mistry <nehalmistry@xxxxxxxxx>]

wl driver supported devices:
http://www.broadcom.com/support/802.11/linux_sta.php

b43 driver supported devices:
http://wireless.kernel.org/en/users/Drivers/b43#Supported_devices

Both 4306 (Me) and 4318 (Todor) are listed for b43 but not wl.

When I first opened this bug, I contacted the support email listed on
the above Broadcom website and directed them here, but I have yet to
receive a reply.

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https://bugs.launchpad.net/bugs/1313221

Title:
  modprobe wl crashes with broadcom 4306

Status in “bcmwl” package in Ubuntu:
  Confirmed

Bug description:
  I was installing Xubuntu 14.04. It said 'Configuring bcmwl-kernel-
  source (amd64)' and in the details "DKMS: install completed." and it
  just froze there. To continue installation I had to open up a terminal
  and execute  'sudo killall -9 modprobe'

  After getting it installed, I found out that the 'wl' module causes
  problems with my broadcom 4306 wireless card. I had to add it to the
  module blacklist.

  When I load the 'b43' module first (which is the correct module for my
  card), it loads fine [dmesg-b43-first.txt, 134-136]. Then when I try
  to load the 'wl' module after that, it seems to fail gracefully
  [dmesg-b43-first.txt, 203-end]. This seems normal to me.

  However, when I load the 'wl' module first, I get a stack trace
  [dmesg-wl-first.txt, 62-end]. I cannot unload it after that as it says
  it's in use. If I try to load 'b43' after that, modprobe just freezes
  (which I assume is what happened during installation). The system also
  freezes during reboot and I need to hard reboot my system.

  Two issues here it seems:
  1. The wrong module is being automatically loaded for my card. It should be 'b43' not 'wl'.
  2. More importantly, 'wl' is causing a stack trace and causing the modprobe process to lock up when loading 'b43'.

  Please let me know if you need any more information and thank you for
  the assistance.

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