Hi, I'm having the same issue on a Lenovo G510. A workaround (at least for me) is to disable NetworkManager quickly after booting, then it won't freeze. After that, remove bcmwl-kernel-source and the problem won't happen with brcmsmac, I can re-enable NetworkManager safely.
Hardware: 08:00.0 Network controller: Broadcom Corporation BCM4313 802.11bgn Wireless Network Adapter (rev 01) Notice bug 1451789, which looks very similar. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1455974 Title: Lenovo E545 freezes with 'CPU stuck' under Kernel 3.19 (Ubuntu 15.04) Status in linux package in Ubuntu: Incomplete Bug description: Lenovo E545 freezes with 'CPU stuck' under Kernel 3.19 (Ubuntu 15.04; latest) after aprox 10s when login screen appears meanwhile Ubuntu 14.10 runs. CPU stuck also when booting in text mode. Kernel 3.16 under Ubuntu 15.04 seems to work either. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1455974/+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
