ubuntu 12.04 wireless not working

Can you give the output of:

sudo lshw -C network; lsb_release -a; uname -a; sudo rfkill list; dmesg | grep -i firm

Thanks

here is the output can you solve the wireless issue:
 *-network
       description: Ethernet interface
       product: RTL8101E/RTL8102E PCI Express Fast Ethernet controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:02:00.0
       logical name: eth0
       version: 02
       serial: 3c:4a:92:c7:6b:41
       size: 10Mbit/s
       capacity: 100Mbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix vpd bus_master cap_list rom ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=N/A latency=0 link=no multicast=yes port=MII speed=10Mbit/s
       resources: irq:41 ioport:2000(size=256) memory:b0410000-b0410fff memory:b0400000-b040ffff memory:b0420000-b043ffff
  *-network DISABLED
       description: Wireless interface
       product: BCM4313 802.11b/g/n Wireless LAN Controller
       vendor: Broadcom Corporation
       physical id: 0
       bus info: pci@0000:03:00.0
       logical name: wlan0
       version: 01
       serial: c0:cb:38:6e:2c:7c
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=brcmsmac driverversion=3.2.0-23-generic firmware=N/A latency=0 link=no multicast=yes wireless=IEEE 802.11bgn
       resources: irq:18 memory:b2400000-b2403fff
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 12.04 LTS
Release: 12.04
Codename: precise
Linux simba-HP-G72-Notebook-PC 3.2.0-23-generic #36-Ubuntu SMP Tue Apr 10 20:39:51 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
0: hp-wifi: Wireless LAN
 Soft blocked: no
 Hard blocked: yes
1: phy0: Wireless LAN
 Soft blocked: no
 Hard blocked: yes
[ 0.395068] [Firmware Bug]: ACPI: BIOS _OSI(Linux) query ignored

Due you dual boot the system?

What router do you use on that network?
Can you please give me the model number and the manufacture brand?
Is the wire-less connection working on other computers running Ubuntu or other operating systems?

What router do you use on that network?
Can you please give me the model number and the manufacture brand?
Is the wire-less connection working on other computers running Ubuntu or other operating systems?

The router is moot, the wifi device is disabled. So it could be ANY router and it wouldn't make any difference at all.

Thanks for the heads-up actionparsnip. I didn't notice the router information was out there because I thought they never connected to the router or get any information from it. My bad.

I have the same problem. only mine will randomly stop working for no reason and Actionparsnip never got back to me.. here is my output

steven@UbuntuDesktop:~$ sudo lshw -C network; lsb_release -a; uname -a; sudo rfkill list; dmesg | grep -i firm
[sudo] password for steven:
  *-network
       description: Wireless interface
       product: RT2800 802.11n PCI
       vendor: Ralink corp.
       physical id: 5
       bus info: pci@0000:01:05.0
       logical name: wlan0
       version: 00
       serial: 00:25:9c:f0:7a:01
       width: 32 bits
       clock: 33MHz
       capabilities: pm bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=rt2800pci driverversion=3.2.0-24-generic firmware=0.34 ip=192.168.1.5 latency=64 link=yes maxlatency=4 mingnt=2 multicast=yes wireless=IEEE 802.11abgn
       resources: irq:16 memory:fdfe0000-fdfeffff
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 12.04 LTS
Release: 12.04
Codename: precise
Linux UbuntuDesktop 3.2.0-24-generic #37-Ubuntu SMP Wed Apr 25 08:43:22 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
0: phy0: Wireless LAN
 Soft blocked: no
 Hard blocked: no
steven@UbuntuDesktop:~$

sladner84: are you sure you didn't have internet access when entering that command in the terminal?
I can't seem to find any problem in your log... Perhaps I am not looking correctly?
Is this issue happening with other computers? It might be a connectivity issue due to interferences. It often happens with old hardware or under an aerial lane.

This issue seems to only be affecting my desktop computer.... When I installed Ubuntu 12.04 on my laptop I started out with the Beta2 and upgraded when 12.04 full version was released and I never had any problems with it... and yes at the time I had internet access.. every so often i have to switch from one of my wireless networks to another just to keep the internet working and as for hardware.. here are my specs...... My computer is a HP Pavilion model number M8200N and the networking card that I installed is a Linksys. Model number WMP600N... I think it might be a bug having to do with the DNS Name Resolve. let me know if there is any info you still require..And thanks for any and all help

Steven Ladner

If you run the Precise liveCD does it work ok?

Wifi Flickers on an off.

Similar problem as sladner84 (sladner84) said on 2012-04-28.

Ubuntu ones will drop the connection without warning. The wireless router is within 10 feet of the computer.

same issues..... wifi it within 2 ft of system but there in no cat. 5 port to install with..... so we are trying everything we know if too find an answer... thank you all for your help it still says missing firmware...