NM does not display any Wi-Fi networks (but Windows 7 and Android do) -- Broadcom BCM4313 brcmsmac

[Chris]

In Ubuntu the wifi network doesn't show up. On Windows 7 on the same laptop it shows up. In Android on my phone it shows up. Range isn't the issue, as the router is only about 2m away. Laptop (Dell Inspiron m301z) hasn't had any wifi problems previously.

Router settings: It is a Virgin Media branded netgear router vmdg480
Standard Specification Compliant EU DOCSIS 3.0
Hardware Version 2.00
Software Version V5.5.2R30

Channel: Auto
802.11 mode: Upto 300 Mbps
802.11N Band: 2.4Ghz
Security Mode
 WPA Auto

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: network-manager 0.9.1.90-0ubuntu5
ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
Uname: Linux 3.0.0-12-generic x86_64
ApportVersion: 1.23-0ubuntu4
Architecture: amd64
CRDA: Error: [Errno 2] No such file or directory
Date: Fri Nov 11 17:41:58 2011
Gconf:

IfupdownConfig:
 auto lo
 iface lo inet loopback
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Beta amd64+mac (20110901)
IpRoute:
 default via 192.168.42.129 dev usb0 proto static
 169.254.0.0/16 dev usb0 scope link metric 1000
 192.168.42.0/24 dev usb0 proto kernel scope link src 192.168.42.202 metric 1
Keyfiles: Error: [Errno 2] No such file or directory
NetworkManager.state:
 [main]
 NetworkingEnabled=true
 WirelessEnabled=true
 WWANEnabled=true
 WimaxEnabled=true
ProcEnviron:
 LANGUAGE=en_GB:en
 PATH=(custom, no user)
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
SourcePackage: network-manager
UpgradeStatus: Upgraded to oneiric on 2011-09-22 (50 days ago)

[Chris (ccouzens)]

After shutting down several times (in the normal course of use) the network shows up, and the computer connected fine.

[Thomas Hood (jdthood)]

@Chris: Do you see any improvement in Ubuntu 12.04?

[Chris (ccouzens)]

I haven't been able to test that particular wifi network again. But I've had no problems with similar routers and the laptop has worked fine with wifi ever since.

I'm happy for this bug report to be closed.

[Thomas Hood (jdthood)]

Thanks.