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I have got a Dell Latitude E5400, it runs under Ubuntu 14.04 and WLAN does not work.

Is there a driver for WLAN for this laptop?

I am new to Ubuntu. How can I get wireless working on this laptop?

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closed as unclear what you're asking by Braiam, Eric Carvalho, Sneetsher, waltinator, Danatela May 13 at 5:18

Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. See the How to Ask page for help clarifying this question.If this question can be reworded to fit the rules in the help center, please edit the question.

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"wlan does not work."? how exactly? Doesn't show any network in the network manager applet? Doesn't detect at all the device? You can connect but it doesn't open any webpage? –  Braiam May 10 at 23:08
    
Good call @Braiam. Rather than down voting it would be more productive to teach a brand new user of Ubuntu and AskUbuntu how to form helpful questions. Especially since there is an edit in the queue. What do we want to know? –  Dennis May 10 at 23:15
    
There is a hardware button left front side for wireless. it this set to off? –  Rinzwind May 10 at 23:26
    
Welcome to Ask Ubuntu! We need more hardware information to help you, can you look at this question and then edit your question adding the information. –  fossfreedom May 11 at 7:27
    
Open terminal Ctrl+Alt+t, run sudo lshw -c network add its outputs to the question, same thing for ifconfig -a –  Sneetsher May 11 at 20:47

1 Answer 1

The first thing to try is seeing if there are "Additional Drivers" that might help.

In the upper right corner of the screen click the gear icon.
Click "System Settings"
Select "Software & Updates"
Open the "Additional Drivers" tab.
Let it search for drivers that match your hardware and if something comes up activate it.

There are plenty of diagnostic steps to follow if this doesn't work, but with all my Dell laptops in the past this sorted it out.

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This is not an answer but a guess ;) –  Rinzwind May 10 at 23:23
    
Broadcom B43 Wireless Driver and Broadcom STA Wireless Driver Proprietary should appear –  pgr May 10 at 23:25
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@Rinzwind, true re:guess and I really hope that it doesn't cause more trouble than it solves, but whenever I see a 1 reputation, a statement of total newness to Ubuntu, and wording that backs that up I picture someone who may learn the terminal some day but right now just wants an answer. As long as Dell ships a substantial number of Broadcom cards I feel better playing the odds and hoping that simple point and click gets the job done. Better answers will rise to the top but there is a reasonable probability that this is the problem on a new Dell install. –  Dennis May 12 at 1:36

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