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I am working on a dell machine and wifi didnt work out of the box but I was able to get it to work. After doing updates the network appears in the place where you can edit connections but there is no way to connect.
When I first installed ubuntu I successfully tried this to get the wifi to work: Installing Broadcom Wireless Drivers. .
Today I updated my system using the software updater. Now when I click on the network indicator in the top panel it just shows wired network disconnected and no wireless networks at all, like it used to.
When I click edit connections I can find "A Network" but I cannot connect just edit it.
I did what was in the link again and still no wifi.
What do I do? Please be as specific as possible, I am new to ubuntu.

Edit - I answered the post with 59^ and it is a Dell Latitude D620 and I am using ubuntu 12.04 LTS and nothing happens when I type those codes. I tried putting sudo in front of them also and still, nothing happened...

Community
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user256576
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2 Answers2

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Try this in the terminal

sudo /etc/init.d/networking restart

this shuld solve the problem

if the above is not working this will fix the problem for sure

sudo service network-manager restart

please let me know if it helped and what so i can edit the post thank you

Hawk-Tech
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Please do:

sudo apt-get purge --remove bcmwl-kernel-source
sudo apt-get install linux-firmware-nonfree
sudo modprobe -rv wl
sudo modprobe -v b43

watch for error if any occur in the last two commands please continue.

Wild Man
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