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[Vincenzo Costa <cvincenzo16@xxxxxxxx>]

Ok, I updated the bios of my laptop from A10 to A15.

Here is the output o 'sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date'
A15
09/24/2014

Nothing has changed concerning the wireless interface, when running
kernel 3.16.0-25 wifi doesn't work, while it works perfectly when
running the old 3.13 kernel.

Here is the output from  'lspci -vvnn | grep -A 9 Network'
-------------------------------
02:00.0 Network controller [0280]: Broadcom Corporation BCM43228 802.11a/b/g/n [14e4:4359]
        Subsystem: Dell Device [1028:0014]
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
        Latency: 0, Cache Line Size: 64 bytes
        Interrupt: pin A routed to IRQ 3
        Region 0: Memory at f7e00000 (64-bit, non-prefetchable) [size=16K]
        Capabilities: <access denied>

0b:00.0 SD Host controller [0805]: O2 Micro, Inc. Device [1217:8221] (rev 05) (prog-if 01)
--------------------------------

And this is the output of  'lspci -vvnn | grep -A 9 Network'  when running linux 3.13.0-40
--------------------------------
02:00.0 Network controller [0280]: Broadcom Corporation BCM43228 802.11a/b/g/n [14e4:4359]
        Subsystem: Dell Device [1028:0014]
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
        Latency: 0, Cache Line Size: 64 bytes
        Interrupt: pin A routed to IRQ 17
        Region 0: Memory at f7e00000 (64-bit, non-prefetchable) [size=16K]
        Capabilities: <access denied>
        Kernel driver in use: wl
---------------------------------

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https://bugs.launchpad.net/bugs/1397383

Title:
  Wireless interface Broadcom BCM43228 in Dell Latitude 5530 is not
  recognised with linux-generic-lts-utopic 3.16.0-25

Status in bcmwl package in Ubuntu:
  Incomplete

Bug description:
  I have a Dell latitude 5530 laptop with the Broadcom BCM43228 wireless card, and I currently run Kubuntu 14.04.1 LTS. It works ok with the 3.13.0-40 original linux kernel, but after installing the linux-generic-lts-utopic kernel (version 3.16-25) the wireless interface does not appear any more. The kubuntu applet for network connections does not allow to switch the wireless network on. Booting back with 3.13 kernel can fix the issue, so it's not a hardware problem. The following commands do not give any output concerning the wireless interface wlan0 or the BCM43228:
  dmesg | grep 'BCM'
  iwconfig
  ifconfig

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-generic-lts-utopic 3.16.0.25.19
  ProcVersionSignature: Ubuntu 3.13.0-40.69-generic 3.13.11.10
  Uname: Linux 3.13.0-40-generic x86_64
  NonfreeKernelModules: wl
  ApportVersion: 2.14.1-0ubuntu3.5
  Architecture: amd64
  CurrentDesktop: KDE
  Date: Fri Nov 28 17:35:37 2014
  InstallationDate: Installed on 2013-04-25 (581 days ago)
  InstallationMedia: Kubuntu 13.04 "Raring Ringtail" - Release amd64 (20130423.1)
  SourcePackage: linux-meta-lts-utopic
  UpgradeStatus: Upgraded to trusty on 2014-04-18 (224 days ago)

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