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I installed Ubuntu 16.05 alongside Windows 10 on a Dell Inspiron 3543 laptop. Installation was successful, but could not get the WiFi connected to the internet.

I can see my SSID being displayed on the drop down menu, but WiFi doesn't work after I click it and enter the WiFi password. The WiFi icon is displayed with an "empty WiFi" sign.

Here is the output from running the Wireless Info Script

How can I fix this so that I can access the internet?

I followed instruction from the duplicate page step by step and still have the issue.

Kevin Bowen
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Gilma
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    Please [edit] your question and add output of lspci -knn | grep Net -A2 terminal command. – Pilot6 Jan 22 '17 at 09:42
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    There is no Ubuntu 16.06. Which version have you installed? – Muhamed Huseinbašić Jan 22 '17 at 10:04
  • Sorry the version is 16.04 LTS. Thanks – Gilma Jan 22 '17 at 10:29
  • Hi Pilot6 , This is the output of lspci -knn | grep Net -A2 06:00.0 Network controller [0280]: Broadcom Limited BCM43142 802.11b/g/n [14e4:4365] (rev 01) Subsystem: Dell Wireless 1704 802.11n + BT 4.0 [1028:0016] Kernel modules: bcma – Gilma Jan 22 '17 at 10:41
  • Did the instructions given in answers to that question not enable you to solve this? If not, please [edit] with additional information. I could be mistaken, but it looks to me from the information you've provided like that ought to work. – Eliah Kagan Jan 22 '17 at 16:24
  • I followed instructions from that page step by step , still the problem is not solved. – Gilma Jan 22 '17 at 17:12
  • You need to describe what you did in details, and what happened. Did you disable Secure Boot? – Pilot6 Jan 22 '17 at 17:23
  • And also run lspci -knn | grep Net -A2 now and post the output. – Pilot6 Jan 22 '17 at 17:31
  • Hi Pilot6, I followed those 3 step instructions from this page - https://askubuntu.com/questions/55868/installing-broadcom-wireless-drivers – Gilma Jan 22 '17 at 19:33
  • Hi Pilot6, the output of lspci -knn | grep Net -A2 06:00.0 Network controller [0280]: Broadcom Limited BCM43142 802.11b/g/n [14e4:4365] (rev 01) Subsystem: Dell Wireless 1704 802.11n + BT 4.0 [1028:0016] Kernel modules: bcma – Gilma Jan 22 '17 at 19:36
  • Yes , secure boot disabled even before installing ubuntu. – Gilma Jan 23 '17 at 09:31

1 Answers1

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I have Dell Inspiron 3543 as well.

Connect to the internet with a cable or connect to a Wi-Fi network with your smart-phone and tether the connection over a usb cable.

Run sudo apt update if you haven't already after installing Ubuntu.

Then sudo apt-get install bcmwl-kernel-source

This should make wireless connections work.

Note: Bluetooth is also possible to configure, though it's harder, and there is not so much help out there (I did get bluetooth to work once)

Update

You can as well download the package here:

https://packages.ubuntu.com/jammy/bcmwl-kernel-source

Though make sure to select the right version! The link I've provided leads to the package for jammy (22.04LTS) and you might be on a different one. You can select it at the top of the page.

This is useful if you can only access internet from another device. After downloading – you can simply transfer the package using a USB flash drive or your phone and install it using dpkg. I.e.:

dpkg -i bcmwl-kernel-source_6.30.223.271+bdcom-0ubuntu4_amd64.deb
Subtle Development Space
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  • Thank you, it worked perfectly. I used this tutorial to share Internet over Ethernet: https://crookm.com/journal/2018/sharing-wifi-connection-over-ethernet/ – Bartosz Petryński Aug 20 '19 at 10:46
  • This worked on Ubuntu 22.04 despite several error messages during the install of "bcmwl-kernel-source". – warrens Feb 19 '23 at 17:04