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I just installed Ubuntu 12.04 LTS. The system works OK but I can't get a wireless Internet connection. So far, I can only get a wired connection (about 50 cm from the modem).

I went through various help topics requesting to install some drivers but nothing worked. I thought I could set the wireless connection manually but I can't find any clear and/or relevant documentation about it. Any suggestion? Or could you suggest another Ubuntu version that would possibly solve the problem for my computer?

And please don't tell me to get a longer cable! Thx ;)

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Try: sudo apt-get install linux-firmware-nonfree

sudo modprobe b43

dmesg |grep -e b43 -e bcma

from: http://ubuntuforums.org/showthread.php?t=2011756

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  • Sorry, but I can't manage to type the pipe... – Mowdya Sep 14 '13 at 13:58
  • OK, I found it. – Mowdya Sep 14 '13 at 14:05
  • Prompted to download some firmware updates but can't access the site. I'll try again later. – Mowdya Sep 14 '13 at 14:13
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This method shows promise, but after a couple of reboots the device can't locate networks.

I've been trying for 3 days now to get my wifi to work on MacAir 2008 1, 1 of which has a broadcom wifi device BCM4321 PCI_14e4_4328. Absolutely none of the advice garnered from researching worked for me. But doing the following which I pieced together from different sources worked.

sudo apt-get remove --purge bcmwl-kernel-source

sudo apt-get install firmware-b43-installer

Then the next part is not particularly user-friendly but easy enough: Download a backport from here. If you select last modified to get the latest on top choose that. Download the build and copy it to a USB stick. Then copy it to your home directory ~/Desktop or ~/Documents doesn't matter then sudu su to be root, enter the directory you unzipped and do a make install, it will show and error but it gives you a clue what to do. Can't remember now, but I think it said make oldConfig it's one of the two notices you get at the beginning.

Here is the link to some instructions to build the backports and install.

Getting the backports installed is the key to successfully configuring your wifi device.

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  • I would recommend adding in the essential instructions from the links referenced. This makes the information easier to get, as it keeps it in one place, and makes sure that the information is always readily available, even if the website linked goes down or changes. – TheOdd Nov 14 '16 at 14:36
  • Actually, as of now, it is unreliable, it worked at first, couple of reboots later it no longer sees networks again. However, this course of action has promise but need to figure out to keep it stable. – MagicCamera Nov 14 '16 at 18:03
  • Good to know, can you please add that as a disclaimer at the top of your answer? – TheOdd Nov 14 '16 at 18:40
  • Done. A work in progress will post back here if successful with full instructions. – MagicCamera Nov 14 '16 at 20:18

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