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[Bug 1360783] Re: 14e4:4315 [Dell Studio 1558] Broadcom wifi crash in bcmwl-kernel-source cfg80211


Q1: Is this reproducible on your home WiFI network?

I have 4 different home wifi routers (different hardware and firmware),
and access to a 5th. It does not happen on any of them, which is a pity!

Q2: Does b43 provide a WORKAROUND as outlined in...

I regret not having seem that particular page before. Thanks, I will
read it carefully in preparation for the next failure.

Q3: Did this happen in a prior Ubuntu/wl version?

I started using this driver version under ubuntu 13.10. I encountered
the same external symptoms, but I had not done sufficient problem
determination to know whether the same kernel crash was occurring. In
other words, I can't be certain. The crash has certainly occurred with
several different releases of the 3.13.0 low-latency kernel.

Q4: Which WiFi hotspot would be most convenient for you to do testing

None, I am sorry to say. All those I can be certain about are more than
10,000 miles away from me at the moment! However, I will look hard for
one nearer - I will be travelling over the next few days, so I hope I
can find one which is more convenient to test against.

Q5: At the most convenient WiFi hotspot, could you please test the later
version of wl in Utopic...

Yes, but unfortunately I won't have time to download it before I leave.

Thanks again, Christopher. I will let you know as soon as I have some
new information.


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  14e4:4315 [Dell Studio 1558] Broadcom wifi crash in bcmwl-kernel-
  source cfg80211

Status in “bcmwl” package in Ubuntu:

Bug description:
  1) lsb_release -rd
  Description: Ubuntu 14.04.1 LTS
  Release: 14.04

  2) 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

  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

  3) What is expected to happen with my Dell Studio 1558 is that when
  using wifi hotspots away from home, it works without problem.

  4) What happens instead is that the the system never makes a connection, and there is a crash in syslog:

  The system is resuming after suspend. However, I have seen similar
  crashes after simply powering on, and in more than one hot spot.

  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

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