Vincenzo Costa, this would appear to be a downstream packaging issue. However, I am closing this report because as per your comment https://bugs.launchpad.net/ubuntu/+source/bcmwl/+bug/1397383/comments/9 this bug has been fixed in the latest development version of Ubuntu - Vivid Vervet.
This is a significant bug in Ubuntu. If you need a fix for the bug in previous versions of Ubuntu, please perform as much as possible of the SRU Procedure [1] to bring the need to a developer's attention. [1]: https://wiki.ubuntu.com/StableReleaseUpdates#Procedure ** Changed in: bcmwl (Ubuntu) Importance: Medium => High ** Changed in: bcmwl (Ubuntu) Status: Incomplete => Fix Released -- 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/1397383 Title: 14e4:4359 [Dell Latitude 5530] Broadcom BCM43228 WiFi interface not recognized with linux-generic-lts-utopic 3.16.0-25 Status in bcmwl package in Ubuntu: Fix Released 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) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/bcmwl/+bug/1397383/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
