BCM43142. Monitor mode not working.

[Debian Cohen]

A patch is needed to properly enable this function:

To enable monitor mode:
# echo 1 > /proc/brcm_monitor0

bash: echo: write error: Input/Output error

lsb_release -rd
Description: Ubuntu 14.04.1 LTS
Release: 14.04

apt-cache policy bcmwl-kernel-source
bcmwl-kernel-source:
  Instalados: 6.30.223.141+bdcom-0ubuntu2
  Candidato: 6.30.223.141+bdcom-0ubuntu2
  Tabla de versión:
 *** 6.30.223.141+bdcom-0ubuntu2 0
        500 http://archive.ubuntu.com/ubuntu/ trusty/restricted amd64 Packages
        100 /var/lib/dpkg/status

Network controller: Broadcom Corporation BCM43142 802.11b/g/n (rev 01)

uname -a
Dinux dinux-SVF14215CLW 3.13.0-45-generic #74-Ubuntu SMP Tue Jan 13 19:36:28 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

Can you fix it?

Can anyone confirm that the Arch's patch continues to work in 14.04 (with all updates), and what is the correct way to apply the patch? What we can do to make the patch is included in the Ubuntu's file? Thank you.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.