Here is the syslog with "kernel BUG at include/net/cfg80211.h:3343!"
** Attachment added: "kernel BUG at include/net/cfg80211.h" https://bugs.launchpad.net/ubuntu/+source/bcmwl/+bug/1407522/+attachment/4292098/+files/syslog_extracted.log -- 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: New 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) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/bcmwl/+bug/1407522/+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