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This is my first time with Linux (I am using Ubuntu 12.04) and i am having trouble connecting to internte. I read some post and i did the following, if anybody knows what could be happening i will be very greatful!!!

I've enter lspci -vvv and the result was:

> 09:00.0 Ethernet controller: Marvell Technology Group Ltd. 88E8040
> PCI-E Fast Ethernet Controller (rev 13)   Subsystem: Dell Device 02aa
>   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
> 45    Region 0: Memory at f68fc000 (64-bit, non-prefetchable) [size=16K]
>   Region 2: I/O ports at de00 [size=256]  Capabilities: <access denied>
>   Kernel driver in use: sky2  Kernel modules: sky2
> 
> 0c:00.0 Network controller: Broadcom Corporation BCM4312 802.11b/g
> LP-PHY (rev 01)   Subsystem: Dell Wireless 1397 WLAN Mini-Card
>   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 f69fc000 (64-bit, non-prefetchable) [size=16K]
>   Capabilities: <access denied>   Kernel driver in use: b43-pci-bridge
>   Kernel modules: ssb

The i'd entered sudo lshw -class network with the following result:

>   *-network               
>        description: Network controller
>        product: BCM4312 802.11b/g LP-PHY
>        vendor: Broadcom Corporation
>        physical id: 0
>        bus info: pci@0000:0c:00.0
>        version: 01
>        width: 64 bits
>        clock: 33MHz
>        capabilities: pm msi pciexpress bus_master cap_list
>        configuration: driver=b43-pci-bridge latency=0
>        resources: irq:17 memory:f69fc000-f69fffff  

 *-network
>        description: Ethernet interface
>        product: 88E8040 PCI-E Fast Ethernet Controller
>        vendor: Marvell Technology Group Ltd.
>        physical id: 0
>        bus info: pci@0000:09:00.0
>        logical name: eth0
>        version: 13
>        serial: 00:23:ae:35:91:e3
>        capacity: 100Mbit/s
>        width: 64 bits
>        clock: 33MHz
>        capabilities: pm msi pciexpress bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd autonegotiation
>        configuration: autonegotiation=on broadcast=yes driver=sky2 driverversion=1.30 firmware=N/A latency=0 link=no multicast=yes
> port=twisted pair
>        resources: irq:45 memory:f68fc000-f68fffff ioport:de00(size=256)   

*-network DISABLED
>        description: Wireless interface
>        physical id: 2
>        logical name: wlan0
>        serial: 00:24:2c:20:ce:28
>        capabilities: ethernet physical wireless
>        configuration: broadcast=yes driver=b43 driverversion=3.2.0-23-generic firmware=N/A link=no multicast=yes
> wireless=IEEE 802.11bg

After this i wrote rfkill list all

> 0: phy0: Wireless LAN     Soft blocked: no    Hard blocked: no 1:
> dell-wifi: Wireless LAN   Soft blocked: yes   Hard blocked: no

Then lsmod

> Module                  Size  Used by rfcomm                 47604  0 
> joydev                 17693  0  bnep                   18281  2 
> parport_pc             32866  0  ppdev                  17113  0 
> bluetooth             180104  10 rfcomm,bnep lp                    
> 17799  0  parport                46562  3 parport_pc,ppdev,lp dell_wmi
> 12681  0  sparse_keymap          13890  1 dell_wmi dell_laptop        
> 18119  0  dcdbas                 14490  1 dell_laptop uvcvideo        
> 72627  0  videodev               98259  1 uvcvideo snd_hda_codec_idt  
> 70795  1  v4l2_compat_ioctl32    17128  1 videodev psmouse            
> 87603  0  snd_hda_intel          33773  3  snd_hda_codec        
> 127706  2 snd_hda_codec_idt,snd_hda_intel snd_hwdep              13668
> 1 snd_hda_codec arc4                   12529  2  serio_raw            
> 13211  0  snd_pcm                97188  2 snd_hda_intel,snd_hda_codec
> snd_seq_midi           13324  0  snd_rawmidi            30748  1
> snd_seq_midi b43                   365785  0  snd_seq_midi_event    
> 14899  1 snd_seq_midi mac80211              506816  1 b43 snd_seq     
> 61896  2 snd_seq_midi,snd_seq_midi_event snd_timer              29990 
> 2 snd_pcm,snd_seq snd_seq_device         14540  3
> snd_seq_midi,snd_rawmidi,snd_seq cfg80211              205544  2
> b43,mac80211 mac_hid                13253  0  bcma                  
> 26696  1 b43 snd                    78855  15
> snd_hda_codec_idt,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
> soundcore              15091  1 snd snd_page_alloc         18529  2
> snd_hda_intel,snd_pcm sky2                   59043  0  ssb            
> 52752  1 b43 i915                  468651  3  ums_realtek           
> 18248  0  uas                    18027  0  wmi                   
> 19256  1 dell_wmi drm_kms_helper         46978  1 i915 drm            
> 242038  4 i915,drm_kms_helper i2c_algo_bit           13423  1 i915
> video                  19596  1 i915 usb_storage            49198  1
> ums_realtek

Then ifconfig -a

> eth0      Link encap:Ethernet  HWaddr 00:23:ae:35:91:e3  
>           UP BROADCAST MULTICAST  MTU:1500  Metric:1
>           RX packets:0 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:1000 
>           RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
>           Interrupt:18 
> 
> lo        Link encap:Local Loopback  
>           inet addr:127.0.0.1  Mask:255.0.0.0
>           inet6 addr: ::1/128 Scope:Host
>           UP LOOPBACK RUNNING  MTU:16436  Metric:1
>           RX packets:80 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:80 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:0 
>           RX bytes:6560 (6.5 KB)  TX bytes:6560 (6.5 KB)
> 
> wlan0     Link encap:Ethernet  HWaddr 00:24:2c:20:ce:28  
>           BROADCAST MULTICAST  MTU:1500  Metric:1
>           RX packets:0 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:1000 
>           RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

And finally iwconfig

> lo        no wireless extensions.
> 
> wlan0     IEEE 802.11bg  ESSID:off/any  
>           Mode:Managed  Access Point: Not-Associated   Tx-Power=0 dBm   
>           Retry  long limit:7   RTS thr:off   Fragment thr:off
>           Power Management:on
>            eth0      no wireless extensions.

I follow all the step stated on the "Installing STA drivers" and i still can't connect to internet. The enable wireless connection is tick but no wireless network are available. Please tell in what can i do so you can help me get online. Thank you very much for you responses.

share|improve this question
1  
How do you connect? Wired/wireless? Modem/router? Ethernet/usb? – mikewhatever Apr 27 '12 at 2:55
    
I connect via wireless and yes is a dell inspiron laptop – ifdussaut Apr 27 '12 at 3:03
    
Mathew is right, I have the same BCM4312 card on a netbook, and STA works well in 12.04. – mikewhatever Apr 27 '12 at 4:59

OP posted:

I follow the step stated on https://help.ubuntu.com/community/WifiDocs/Driver/bcm43xx#STA%20-%20Internet%20access and I connected, actually I am writing this post from Ubuntu 12.04!!!

I follow the steps stated on "b43 - No Internet access".

share|improve this answer

When I had a problem to get my BCM working, I made a question similar to this. People referred me to this post:

Installing Broadcom Wireless Drivers

This is probably to biggest post around concerning all sorts of BCM models.

share|improve this answer

Im on ubuntu 15. My old dell inspiron would not recognize my bcm 4312 14e4 4315 rev01 wireless adater so this is the only thing that worked but u need wired connection to install b43

First off

Sudo software-properties-gtk

Select all option check boxes available Make sure wired connection is plugged in

Sudo apt-get update

Sudo apt-get install firmware-b43-installer

Next do all

Sudo modprobe -r b43 bcma Sudo modprobe -r brcmsmac bcma Sudo modprobe -r wl

Module wl not found is possible

Next

Sudo modprobe b43

Wait a few moments and check for wireless activity now. Airplane mode was turned on qen i did it i turned off airplane n the wifi worked for the first time ever . This was ubuntu live usb setup so i needed to switch to b43 instead of reboot but it works better i think. I prefer to stick with live os anyway if im installing os i just stick to windows

share|improve this answer
    
Please do not post duplicate answers averywhere. – Pilot6 7 hours ago

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