Patrick Wright, this bug was reported a while ago and there hasn't been
any activity in it recently. We were wondering if this is still an
issue? Can you try with the latest development release of Ubuntu? ISO CD
images are available from http://cdimage.ubuntu.com/releases/ .

If it remains an issue, could you run the following command in the
development release from a Terminal
(Applications->Accessories->Terminal). It will automatically gather and
attach updated debug information to this report.

apport-collect -p linux <replace-with-bug-number>

Also, if you could test the latest upstream kernel available that would
be great. It will allow additional upstream developers to examine the
issue. Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please do
not test the kernel in the daily folder, but the one all the way at the
bottom. Once you've tested the upstream kernel, please remove the
'needs-upstream-testing' tag. This can be done by clicking on the yellow
pencil icon next to the tag located at the bottom of the bug description
and deleting the 'needs-upstream-testing' text. As well, please comment
on which kernel version specifically you tested.

If this bug is fixed in the mainline kernel, please add the following
tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag:
'kernel-bug-exists-upstream'.

If you are unable to test the mainline kernel, for example it will not
boot, please add the tag: 'kernel-unable-to-test-upstream', and comment
as to why specifically you were unable to test it.

Please let us know your results. Thanks in advance.

Helpful Bug Reporting Links:
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https://help.ubuntu.com/community/ReportingBugs#A3._Make_sure_the_bug_hasn.27t_already_been_reported
https://help.ubuntu.com/community/ReportingBugs#Adding_Apport_Debug_Information_to_an_Existing_Launchpad_Bug
https://help.ubuntu.com/community/ReportingBugs#Adding_Additional_Attachments_to_an_Existing_Launchpad_Bug

** Summary changed:

- IdeaPad U160 Broadcom wifi not connecting
+ 14e4:4727 IdeaPad U160 Broadcom wifi not connecting

** Description changed:

+ WORKAROUND: I discovered that the acer_wmi module loads by default and I
+ had originally blacklisted it because it added "acer wireless" as a
+ device. In order to get this to work I had to remove it from the
+ blacklist. Below are the steps I followed.
+ 
+ 1. Login in (assuming acer wireless module gets loaded) and select Enable 
Wireless from network applet
+ 2. Enable to wireless on the ideapad (Fn-F5)
+ 3. Now, run sudo rmmod acer_wmi
+ 
+ Wifi connects immediately
+ 
+ Adding acer_wmi to the blacklist causes Natty to freeze on the Ubuntu
+ loading splash screen. If you manage to get in this situation you have
+ to get into initramfs by adding break=bottom to the kernel boot line.
+ After you've remounted /root to make it writable you can restore the
+ blacklist file if you backed it up. If you didn't back up the file first
+ you'll need to run sed on the blacklist.conf and fix the line.
+ 
+ If Enable to wireless by using the keyboard shortcuts freezes (step 2
+ above) you can run: rfkill unblock wifi then continue to remove acer_wmi
+ 
  Natty Desktop i386 Alpha 3
  
  = Info before installing STA Broadcom driver =
  Network Manager applet does not list any wireless network information
  
  $ iwconfig
  lo        no wireless extensions.
  
  eth0      no wireless extensions.
  
  $ rfkill list wifi
  0: ideapad_wlan: Wireless LAN
   Soft blocked: no
   Hard blocked: no
  
  $ lshw -C network
    *-network
         description: Ethernet interface
         product: AR8131 Gigabit Ethernet
         vendor: Atheros Communications
         physical id: 0
         bus info: pci@0000:03:00.0
         logical name: eth0
         version: c0
         serial: f0:de:f1:12:21:e9
         size: 1Gbit/s
         capacity: 1Gbit/s
         width: 64 bits
         clock: 33MHz
         capabilities: pm msi pciexpress vpd bus_master cap_list ethernet 
physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
         configuration: autonegotiation=on broadcast=yes driver=atl1c 
driverversion=1.0.1.0-NAPI duplex=full firmware=N/A ip=192.168.1.139 latency=0 
link=yes multicast=yes port=twisted pair speed=1Gbit/s
         resources: irq:41 memory:f0400000-f043ffff ioport:2000(size=128)
    *-network UNCLAIMED
         description: Network controller
         product: BCM4313 802.11b/g/n Wireless LAN Controller
         vendor: Broadcom Corporation
         physical id: 0
         bus info: pci@0000:04:00.0
         version: 01
         width: 64 bits
         clock: 33MHz
         capabilities: pm msi pciexpress cap_list
         configuration: latency=0
         resources: memory:f0500000-f0503fff
  
  $ cat /var/lib/NetworkManager/NetworkManager.state
  
  [main]
  NetworkingEnabled=true
  WirelessEnabled=true
  WWANEnabled=true
  
  = Info after installing STA Broadcom driver =
  Network Manager now lists Wireless Network info, but they are disabled
  
  $ iwconfig
  lo        no wireless extensions.
  
  eth0      no wireless extensions.
  
  eth1      IEEE 802.11  Access Point: Not-Associated
            Link Quality:5  Signal level:0  Noise level:0
            Rx invalid nwid:0  invalid crypt:0  invalid misc:0
  
  $ rfkill list wifi
  0: ideapad_wlan: Wireless LAN
   Soft blocked: no
   Hard blocked: no
  3: brcmwl-0: Wireless LAN
   Soft blocked: no
   Hard blocked: yes
  
  $ lshw -C network
    *-network
         description: Ethernet interface
         product: AR8131 Gigabit Ethernet
         vendor: Atheros Communications
         physical id: 0
         bus info: pci@0000:03:00.0
         logical name: eth0
         version: c0
         serial: f0:de:f1:12:21:e9
         size: 1Gbit/s
         capacity: 1Gbit/s
         width: 64 bits
         clock: 33MHz
         capabilities: pm msi pciexpress vpd bus_master cap_list ethernet 
physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
         configuration: autonegotiation=on broadcast=yes driver=atl1c 
driverversion=1.0.1.0-NAPI duplex=full firmware=N/A ip=192.168.1.139 latency=0 
link=yes multicast=yes port=twisted pair speed=1Gbit/s
         resources: irq:43 memory:f0400000-f043ffff ioport:2000(size=128)
    *-network
         description: Wireless interface
         product: BCM4313 802.11b/g/n Wireless LAN Controller
         vendor: Broadcom Corporation
         physical id: 0
         bus info: pci@0000:04:00.0
         logical name: eth1
         version: 01
         serial: ac:81:12:38:ba:89
         width: 64 bits
         clock: 33MHz
         capabilities: pm msi pciexpress bus_master cap_list ethernet physical 
wireless
         configuration: broadcast=yes driver=wl0 driverversion=5.100.82.38 
latency=0 multicast=yes wireless=IEEE 802.11
         resources: irq:17 memory:f0500000-f0503fff
  
  $ cat /var/lib/NetworkManager/NetworkManager.state
  
  [main]
  NetworkingEnabled=true
  WirelessEnabled=true
  WWANEnabled=true
  
  ProblemType: Bug
  DistroRelease: Ubuntu 11.04
  Package: linux-image-2.6.38-5-generic 2.6.38-5.32
  Regression: Yes
  Reproducible: Yes
  ProcVersionSignature: Ubuntu 2.6.38-5.32-generic 2.6.38-rc6
  Uname: Linux 2.6.38-5-generic i686
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
  Architecture: i386
  ArecordDevices:
   **** List of CAPTURE Hardware Devices ****
   card 0: Intel [HDA Intel], device 0: ALC269VB Analog [ALC269VB Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  patrickmw   1480 F.... pulseaudio
  CRDA: Error: [Errno 2] No such file or directory
  Card0.Amixer.info:
   Card hw:0 'Intel'/'HDA Intel at 0xf0800000 irq 43'
     Mixer name : 'Intel IbexPeak HDMI'
     Components : 'HDA:10ec0269,17aa600a,00100100 
HDA:80862804,80860101,00100000'
     Controls      : 17
     Simple ctrls  : 9
  Date: Mon Mar  7 15:35:47 2011
  HibernationDevice: RESUME=UUID=f28f03d7-7aac-44dd-a082-1af00074d4b9
  InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Alpha i386 (20110302)
  IwConfig:
   lo        no wireless extensions.
  
   eth0      no wireless extensions.
  MachineType: LENOVO 08945KU
  ProcEnviron:
   LANGUAGE=en_US:en
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-5-generic 
root=UUID=67063a39-77cb-40d4-a4b0-75cd44759b8a ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-2.6.38-5-generic N/A
   linux-backports-modules-2.6.38-5-generic  N/A
   linux-firmware                            1.48
  SourcePackage: linux
  StagingDrivers: brcm80211
  Title: [STAGING]
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 05/10/2010
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 33CN14WW
  dmi.board.asset.tag: Tag 12345
  dmi.board.name: MoutCook
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Applicable
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnLENOVO:bvr33CN14WW:bd05/10/2010:svnLENOVO:pn08945KU:pvrLENOVOIdeapadU160:rvnLENOVO:rnMoutCook:rvrNotApplicable:cvnLENOVO:ct10:cvrN/A:
  dmi.product.name: 08945KU
  dmi.product.version: LENOVO Ideapad U160
  dmi.sys.vendor: LENOVO
  
- 
- = Recently I blacklisted ideapad_laptop = 
+ = Recently I blacklisted ideapad_laptop =
  $ rfkill list wifi
  1: brcmwl-0: Wireless LAN
-  Soft blocked: no
-  Hard blocked: yes
+  Soft blocked: no
+  Hard blocked: yes

** Changed in: linux (Ubuntu)
       Status: Confirmed => Incomplete

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Title:
  14e4:4727 IdeaPad U160 Broadcom wifi not connecting

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