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[Rostislav Kandilarov <rostislav.kandilarov@xxxxxxxxx>]

Done. Same problem.

After installing bcmwl-kernel-source in practice laptop is without any
internet connection for not a-bit-more  experienced user as modprobe wl
will try to remove the NIC driver b44 and then trough "modprobe ignore
install b44" wich due to the broken module/kernel state cannot be
undone, process hangs. After reboot if wl is not explicitly blacklisted
it will trigger the same events and prevent WIFI or LAN driver to work
at all on the machine... really annoing... Good that Unity did not
suggest me to install bcmwl as KDE did on 14.10 and 14.04 :)...

Some technical information
daily build of 15.04 from 06.01.2015
 
lsb_release -rd
Description:	Ubuntu Vivid Vervet (development branch)
Release:	15.04

uname -a
Linux ubuntu 3.16.0-28-generic #38-Ubuntu SMP Fri Dec 12 17:37:40 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux

apt-cache policy bcmwl-kernel-source
bcmwl-kernel-source:
  Installed: 6.30.223.248+bdcom-0ubuntu2
  Candidate: 6.30.223.248+bdcom-0ubuntu2
  Version table:
 *** 6.30.223.248+bdcom-0ubuntu2 0
        500 cdrom://Ubuntu 15.04 _Vivid Vervet_ - Alpha amd64 (20150106)/ vivid/restricted amd64 Packages
        500 http://archive.ubuntu.com/ubuntu/ vivid/restricted amd64 Packages
        100 /var/lib/dpkg/status

Jan  6 10:44:58 ubuntu kernel: [ 3042.972927] malloc in abgphy done
Jan  6 10:44:58 ubuntu kernel: [ 3042.973350] wl driver 6.30.223.248 (r487574) failed with code 21
Jan  6 10:44:58 ubuntu kernel: [ 3042.973384] ------------[ cut here ]------------
Jan  6 10:44:58 ubuntu kernel: [ 3042.974356] kernel BUG at include/net/cfg80211.h:3343!
Jan  6 10:44:58 ubuntu kernel: [ 3042.975276] invalid opcode: 0000 [#1] SMP 


** Attachment added: "syslog output"
   https://bugs.launchpad.net/ubuntu/+source/bcmwl/+bug/1407522/+attachment/4292893/+files/syslog

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to bcmwl in Ubuntu.
https://bugs.launchpad.net/bugs/1407522

Title:
  bcmwl package was sugested by KDE driver manager but broke the system

Status in bcmwl package in Ubuntu:
  Incomplete

Bug description:
  On fresh 14.10 install on the first GUI run in KDE the KDE Driver
  Manager suggested installation of bcmwl-kernel-source (see attached
  screenshot)for my Broadcom Corporation BCM4311. After successful
  installation of the package and restart, my system got

  Jan  4 23:32:13 Beatles kernel: [   19.485177] wl driver 6.30.223.248 (r487574) failed with code 21
  Jan  4 23:32:13 Beatles kernel: [   19.485208] ------------[ cut here ]------------
  Jan  4 23:32:13 Beatles kernel: [   19.485242] kernel BUG at include/net/cfg80211.h:3343!

  full description of the message in attached file
  (syslog_extracted.log).

  For some reason this also affects the driver for my NIC  and my laptop
  got out of any possible network connection. So instead of configuring
  the wireless card it left me with only "lo" interface :(. I would
  expect properly configured modules for WAN and LAN....

  Luckily  
  apt-get remove --purge bcmwl-kernel-source 
  restores the previous state so I can submit this bug via LAN.

  Now I'm running  Ubuntu 14.10  but the same happened half an year ago
  when I tried to install 14.04 on this laptop.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.10
  Package: bcmwl-kernel-source (not installed)
  ProcVersionSignature: Ubuntu 3.16.0-28.38-generic 3.16.7-ckt1
  Uname: Linux 3.16.0-28-generic x86_64
  ApportVersion: 2.14.7-0ubuntu8
  Architecture: amd64
  CurrentDesktop: KDE
  Date: Mon Jan  5 01:00:26 2015
  SourcePackage: bcmwl
  UpgradeStatus: No upgrade log present (probably fresh install)

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