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["Christopher M. Penalver" <christopher.m.penalver@xxxxxxxxx>]

J, thank you for reporting this bug to Ubuntu. Natty reached EOL on October 28, 2012.
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** Changed in: b43-fwcutter (Ubuntu)
       Status: New => Invalid

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https://bugs.launchpad.net/bugs/772124

Title:
  broadcom 14e4:4311, B43 and STA drivers sporadically disconnect

Status in “b43-fwcutter” package in Ubuntu:
  Invalid

Bug description:
  Binary package hint: firmware-b43-installer

  DISTRIB_ID=Ubuntu
  DISTRIB_RELEASE=10.10
  DISTRIB_CODENAME=maverick
  DISTRIB_DESCRIPTION="Ubuntu 10.10"
  Linux HP 2.6.35-28-generic #50-Ubuntu SMP Fri Mar 18 18:42:20 UTC 2011 x86_64 GNU/Linux
  Laptop is a HP Pavilion dv9500 with a wireless hardware switch. 
  Problem seems to occur after intensive wireless use (simultaneous video, IM, IRC and web surfing) or after being on continuously for more than 24 hours. Network manager will indicate disconnection from wireless network (WPA2) and any subsequent attempts to reconnect will not work (nw will act as if interface is down). 
  Attempted modprobe -r / -i of b43 driver, restart of /etc/init.d/network and /etc/init.d/network-manager and flipping physical hardware switch in various orders.  Out put of lspci -vnn follows:
  03:00.0 Network controller [0280]: Broadcom Corporation BCM4311 802.11b/g WLAN [14e4:4311] (rev 02)
  	Subsystem: Hewlett-Packard Company BCM4311 802.11b/g Wireless LAN Controller [103c:1374]
  	Flags: bus master, fast devsel, latency 0, IRQ 19
  	Memory at f6000000 (64-bit, non-prefetchable) [size=16K]
  	Capabilities: [40] Power Management version 3
  	Capabilities: [58] Vendor Specific Information: Len=78 <?>
  	Capabilities: [e8] MSI: Enable- Count=1/1 Maskable- 64bit+
  	Capabilities: [d0] Express Endpoint, MSI 00
  	Capabilities: [100] Advanced Error Reporting
  	Capabilities: [13c] Virtual Channel
  	Capabilities: [160] Device Serial Number f9-48-73-ff-ff-90-00-1a
  	Capabilities: [16c] Power Budgeting <?>
  	Kernel driver in use: b43-pci-bridge
  	Kernel modules: ssb

  dmesg is  provided for when this occurs if helpful.
  --- 
  Architecture: amd64
  DistroRelease: Ubuntu 11.04
  EcryptfsInUse: Yes
  InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release Candidate amd64 (20101002)
  NonfreeKernelModules: nvidia
  Package: b43-fwcutter 1:013-3
  PackageArchitecture: amd64
  ProcEnviron:
   LANGUAGE=en_US:en
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
  Tags:  natty running-unity
  Uname: Linux 2.6.38-8-generic x86_64
  UpgradeStatus: Upgraded to natty on 2011-05-02 (0 days ago)
  UserGroups: adm admin audio cdrom dialout dip fax floppy fuse lpadmin netdev plugdev sambashare tape video

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