Download your favorite Linux distribution at LQ ISO.
Go Back > Forums > Linux Forums > Linux - Newbie
User Name
Linux - Newbie This Linux forum is for members that are new to Linux.
Just starting out and have a question? If it is not in the man pages or the how-to's this is the place!


  Search this Thread
Old 06-18-2015, 02:44 AM   #1
LQ Newbie
Registered: May 2015
Posts: 1

Rep: Reputation: Disabled
Installed Ubuntu but PC wireless connection no longer works

I recently installed Ubuntu on an old Dell Laptop using (CD media)
but I found that I no longer had a wireless network. So
I cannot connect to my netgear router at home and the internet rendering the installation virtually useless.
Old 06-18-2015, 05:15 AM   #2
Registered: Jun 2010
Location: Slovakia
Distribution: Debian 8, Ubuntu 10.04 and 12.04; SLAX 6.0; ConnochaetOS 0.9.; LFS; Natty chip: VT1708S
Posts: 93
Blog Entries: 2

Rep: Reputation: 7
Dear steve.bradshaw,
what is the ouput of ifconfig
Old 06-18-2015, 05:28 AM   #3
LQ Guru
Registered: Dec 2008
Location: Westgate-on-Sea, Kent, UK
Distribution: Debian Testing Amd64
Posts: 5,464

Rep: Reputation: Disabled
Can you give us a bit of detail about what exactly you are doing to get connected and what responses you are receiving from Ubuntu. Are you using Ubuntu 14.04 or some other version?
Old 06-18-2015, 07:46 AM   #4
Senior Member
Registered: Aug 2010
Location: Near Edinburgh, Scotland
Distribution: Cinnamon Mint 17.3 and 18 at present.
Posts: 1,273

Rep: Reputation: 290Reputation: 290Reputation: 290
Hi Steve,

Welcome to LinuxQuestions!

You need to give us some more details to get help. What exactly is the model of Dell, laptop? Can you look up the spec and find out what WiFi network card is installed in it and let us know? If you can find them, details of the WiFi chip would help as well. ( No Internet connection... Yeh, I know... Read on...)

You're probably going to need to install a software module to enable the WiFi so the other thing you'll need is a Cat5 network patch cable to connect between your netgear router and the laptop to give you a connection to the Internet to allow you to check specs and download the correct module. Wired connections just seem to work!
Every time I've upgraded the OS on my old EeePC netbook it loses it's WiFi and I have to re-load the Realtech module this way to get it back.

Play Bonny!

Old 06-18-2015, 09:21 AM   #5
Registered: Oct 2014
Location: Fort Wayne
Distribution: Ubuntu 16.04 LTS
Posts: 616
Blog Entries: 2

Rep: Reputation: 166Reputation: 166
Would it happen to be a Latitude C840 by any chance (or one from that era)? There is a notorious issue with those and Linux that affects wireless (no matter what chip you have) and the GeForce 4 graphics card. I think it's with the motherboard, I can't seem to get things that **should** work to work. I'm not alone:
He said in there that it's an issue with the GPU, but I think it's much deeper than that because of the wireless issue.
Old 06-18-2015, 11:52 AM   #6
Registered: Jun 2015
Posts: 51

Rep: Reputation: Disabled
This link may be helpful:

This topic seems to come up pretty often. Good luck.

Added: Ubuntu manual free download:

See pp 77-78 for getting proprietary drivers, which would include drivers for Broadcom wifi. By the way, a wired internet connection is required for getting proprietary drivers.

Last edited by pholland; 06-18-2015 at 12:10 PM. Reason: added material.
Old 06-18-2015, 02:56 PM   #7
LQ Veteran
Registered: Feb 2015
Location: Oregon, USA
Distribution: Lubuntu 14.04, Windows Vista
Posts: 6,279
Blog Entries: 3

Rep: Reputation: 835Reputation: 835Reputation: 835Reputation: 835Reputation: 835Reputation: 835Reputation: 835
Hi Steve...

Welcome to the forum

Let's first ascertain which wireless adapter we're dealing with.

Please open a terminal and post the results of...

lspci -nnk | grep -i net -A2
1 members found this post helpful.
Old 06-18-2015, 08:28 PM   #8
LQ Guru
Registered: Jan 2006
Location: Virginia, USA
Distribution: Slackware, Debian, Mageia, and whatever VMs I happen to be playing with
Posts: 12,509
Blog Entries: 16

Rep: Reputation: 3211Reputation: 3211Reputation: 3211Reputation: 3211Reputation: 3211Reputation: 3211Reputation: 3211Reputation: 3211Reputation: 3211Reputation: 3211Reputation: 3211
The key to this is finding out what wireless chipset is in use. Dell likes Broadcom, though I can't speak about that particular machine.

This thread will give you the tools to find out your wireless chipset and some assistance if it's Broadcom. Note that, in newer versions of Ubuntu, the location of the "Additional Drivers" item has moved; it's now a tab in the Software and Updates tool.
1 members found this post helpful.


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
I installed ubuntu 9.4 established wireless connection but ldimeglio Linux - Newbie 8 07-13-2009 12:46 AM
Following debian dist-upgrade wireless card no longer works, ifconfig can't bring up scheidel21 Linux - Wireless Networking 2 12-01-2007 04:52 AM
changed router wireless essid, /etc/network/interfaces no longer works! snow_bound Linux - Wireless Networking 0 12-29-2006 06:21 AM
XP internet no longer works after dual boot w/ ubuntu CamelofCamelot Linux - Networking 1 09-16-2006 03:39 AM
Installed router, dial-up Internet no longer works. (MDK 9.1) mcarter Linux - Networking 1 09-01-2003 03:18 PM > Forums > Linux Forums > Linux - Newbie

All times are GMT -5. The time now is 09:08 AM.

Main Menu
Write for LQ is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration