Add me too to the list of people experiencing this problem. I've been getting it for a while now, since installing Xubuntu 15.04 in the spring, and even after recently installing 14.04LTS.
The last time I got this (a few minutes ago) I was re-enabling the network after disabling it because of a poor wifi connection. I have gotten it probably weekly, but seemingly randomly since installing 15.04. But, it's not always the same trigger, sometimes it's when I change networks, but always when interacting with the network widget. I hoped that recently downgrading to 14.04 would change things, but apparently not. Also, maybe there's a connection to my laptop freezing occasionally on shutdown. - I running a 2014 Macbook Pro 13 Retina. - Network controller: Broadcom Corporation BCM4360 802.11ac Wireless Network Adapter (rev 03) - Xubuntu 14.04LTS and 15.04 - Kernel version: 3.19.0-31-generic -- 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/1483998 Title: System freezes when changing network preferences Status in bcmwl package in Ubuntu: Triaged Bug description: I have Ubuntu 15.04 on a unmodified August 2014 Macbook Pro Retina 13 inch with i7. The only proprietary driver running is bcmwl. Because of the fact that freezing happens immediately on changing Network settings, I think that bcmwl is the cause. Symptoms: System freezes completely, screen does not turn off. Occasions: A) If NetworkManager selected one Wifi to connect, and I click on a different one to connect, sometimes system freezes. B) After setting up wifi without IPv4 (set IPv4 on “ignore” in Network Manager) and connect it to IPv6, it first looks fine. “ping6 google.com” works like expected. When then starting Firefox or XChat IRC, System freezes. Notes: - I do have a native IPv6 Internet connection - I experienced no such problems with Ubuntu 14.10, so I guess it is related to kernel/bcmwl compatibility, since the driver version used to be the same. - there are no logs in /var/crash bcmwl version: 6.30.223.248+bdcom-0ubuntu2 kernel version: 3.19.0-25-generic ProblemType: Bug DistroRelease: Ubuntu 15.04 Package: bcmwl-kernel-source 6.30.223.248+bdcom-0ubuntu2 ProcVersionSignature: Ubuntu 3.19.0-25.26-generic 3.19.8-ckt2 Uname: Linux 3.19.0-25-generic x86_64 NonfreeKernelModules: wl ApportVersion: 2.17.2-0ubuntu1.2 Architecture: amd64 CurrentDesktop: Unity Date: Wed Aug 12 08:51:08 2015 EcryptfsInUse: Yes InstallationDate: Installed on 2014-11-15 (269 days ago) InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1) 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/1483998/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp

