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I have installed Ubuntu on my Acer laptop, but I can''t access the internet. As far as I can tell it is because my wireless adapter (built-in Broadcom 802.11g) is not recognised. I have windows 7 also on the laptop and it does recognise the wireless, so I can only assume it is something o do with Ubuntu. I suppose it might need a driver. I have read that I could try to connect my laptop via a cable to the router, but sadly I do not have a cable, nor do I have any access to one or to any shop that might sell it, so I hope there is some other solution, maybe by downloading via the windows setup. If anyone can provide any guidance or advice I would appreciate it. I am completely new to Ubuntu, so please bear this in mind.

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did you try the "additional drivers" "program"?! –  Dr_Bunsen Jun 3 '12 at 17:59
    
Check out the howto: help.ubuntu.com/community/WifiDocs/Driver/bcm43xx It has both online and offline sections. –  mikewhatever Jun 3 '12 at 18:06
    
Thank you, though I wasn't able to find a solution there. –  P Sellaz Jun 4 '12 at 13:14
    
@Dr_Bunsen Thank you, yes I tried that, and it seemed to want to download a driver, but with there being no internet connection, it was not able to do it. –  P Sellaz Jun 4 '12 at 13:51
    
@PSellaz you can plug in a wired cable for 2 minutes?! –  Dr_Bunsen Jun 4 '12 at 16:43
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2 Answers

If this is driver problem you could try to install Broadcom 802.11g drivers by downloading them from Broadcom web site in your windows OS and then copy them to Ubuntu and try to install them there.

See if that will resolve your issue.

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Thank you. I have downloaded the drivers but how do I "copy them to Ubuntu and try to install them there" ? –  P Sellaz Jun 4 '12 at 13:14
    
I am not shore how WUBI installer works, but I guess you can access Windows partition anyway. So lets start. –  John Jun 4 '12 at 18:18
    
First copy drivers to root of C:/ drive in Windows Then boot up Ubuntu, mount Windows partition (C:/ drive) Copy drivers from C: drive to Desktop in Ubuntu To make things easier rename downloaded driver archive to drivers (leave .tar.gz like drivers.tar.gz) Now fire up terminal by pressing Ctrl+Alt+T and type cd Desktop Now we need to extract drivers from archive so type tar -zxvf drivers.tar.gz Then type cd drivers next ./configure next make next make install And now drivers should be installed. ;) –  John Jun 4 '12 at 18:32
    
Thank you. I have got as far as extracting the drivers (there is a Makefile, and src folder and a lib folder) but ./configure gives "bash: ./configure: no such file or directory" –  P Sellaz Jun 4 '12 at 20:34
    
Can you please tell which version of ubuntu you have? Is it 12.04 32 Bit? –  John Jun 4 '12 at 20:54
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Here is ultimate guide for this issue.

First Step

Install Downloaded files ( b43-fwcutter and patch)
Right Click on file Or Double Click Right Click on file Or Double Click

Click Install Click Install

Second Step
Copy the downloaded files (wl_apsta-3.130.20.0.o and broadcom-wl-4.150.10.5.tar.bz2) to your home folder and execute the following commands consecutively in a terminal to extract and install the firmware:

tar xfvj broadcom-wl-4.150.10.5.tar.bz2

enter image description here After hitting enter you should see something like this

Now enter

sudo b43-fwcutter -w /lib/firmware wl_apsta-3.130.20.0.o

and hit eneter

enter image description here

And something like this should come out..

enter image description here

Now enter

sudo b43-fwcutter --unsupported -w /lib/firmware broadcom-wl-4.150.10.5/driver/wl_apsta_mimo.o

After terminal have done it's job exit terminal.

And you should be able to activate drivers In Additional Drivers enter image description here

Select Drivers and click Activate

enter image description here

Note: A computer restart may be required before using the wifi card.

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Thanks, but the "install" button on the "utility for extracing Broadcomm ...." screen is greyed out..... –  P Sellaz Jun 5 '12 at 18:53
    
WOW never had that before :D I recommend you to reinstall Ubuntu to 12.04. You installed Ubuntu from Windows with WUBI right? So that should not be a problem to uninstall 11.10 and instal 12.04... On 12.04 should not be this issue any more. Sorry that I could not help you with this.. before this try " gksudo software-center & exit " in terminal See if that helps with install button –  John Jun 5 '12 at 19:18
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