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[Bug 1360783] Re: Broadcom wifi crash in bcmwl-kernel-source cfg80211


Thanks, Christopher... I hope the following helps!

brian@bacchus:~$ lspci -vvnn | grep -A 11 Network
04:00.0 Network controller [0280]: Broadcom Corporation BCM4312 802.11b/g LP-PHY [14e4:4315] (rev 01)
	Subsystem: Dell Wireless 1397 WLAN Mini-Card [1028:000c]
	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 f0500000 (64-bit, non-prefetchable) [size=16K]
	Capabilities: <access denied>
	Kernel driver in use: wl

07:00.0 SD Host controller [0805]: Ricoh Co Ltd MMC/SD Host Controller [1180:e822] (rev 01)
	Subsystem: Dell Device [1028:0413]
brian@bacchus:~$ lsb_release -rd
Description:	Ubuntu 14.04.1 LTS
Release:	14.04
brian@bacchus:~$ uname -a
Linux bacchus 3.13.0-37-lowlatency #64-Ubuntu SMP PREEMPT Mon Sep 22 22:00:49 UTC 2014 i686 i686 i686 GNU/Linux
brian@bacchus:~$ apt-cache policy bcmwl-kernel-source
  Version table:
 *** 0
        500 http://ubuntu.mirror.serversaustralia.com.au/ubuntu/ trusty/restricted i386 Packages
        100 /var/lib/dpkg/status
brian@bacchus:~$ sudo sudo dmidecode -s bios-version
brian@bacchus:~$ sudo dmidecode -s bios-release-date
brian@bacchus:~$ sudo dmidecode -s baseboard-product-name
brian@bacchus:~$ sudo dmidecode -s baseboard-manufacturer
Dell Inc.

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  Broadcom wifi crash in bcmwl-kernel-source cfg80211

Status in “bcmwl” package in Ubuntu:

Bug description:
  lspci shows: Network controller: Broadcom Corporation BCM4312
  802.11b/g LP-PHY (rev 01)

  lsb_release: Ubuntu 14.04.1 LTS (actually UbuntuStudio)

  Linux version 3.13.0-34-lowlatency

  Dell Studio 1558 with Intel CPU in i386 mode and four CPUs.

  Most of the time wifi works perfectly. Occasionally, when using wifi
  hotspots away from home, the system never makes a connection. Usually
  I see similar stack traces in the syslog, but the attached extract is
  the only example I have to hand.

  The system is resuming after suspend, but I do not believe that aspect
  is relevant. I have seen similar crashes after powering on, and (to
  repeat myself) in more than one hot spot. I suspect there is an edge
  case in negotiating with some wifi routers that is not handled
  properly. (Perhaps I am prejudiced, but I get the feeling that the
  problem routers are in iPhone-friendly environments).

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