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I have been install Ubuntu 14.04 on laptop Lenovo V580c. All components are working OK, but WiFi isn't working.

I searched answers in Google, Askubuntu, but nothing works

Please, help

03:00.0 Network controller: Broadcom Corporation BCM43142 802.11b/g/n (rev 01)
04:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 07)

Thanks.

Mitch
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Vladyslav
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  • What your output for rfkill list? – DJ_Beardsquirt Feb 25 '15 at 12:47
  • '0: tpacpi_bluetooth_sw: Bluetooth Soft blocked: yes Hard blocked: no'

    only this

     – Vladyslav Feb 25 '15 at 12:48
  • It's not good that your wireless driver isn't listed there. Update your question with the output for sudo lshw -C network – DJ_Beardsquirt Feb 25 '15 at 12:50
  • Sorry, I'm a new user on this website, I can't found button "edit question"

    so I can show the list here

    *-network description: Network controller product: BCM43142 802.11b/g/n vendor: Broadcom Corporation physical id: 0 bus info: pci@0000:03:00.0 version: 01 width: 64 bits clock: 33MHz capabilities: bus_master cap_list configuration: driver=bcma-pci-bridge latency=0 resources: irq:17 memory:f3500000-f3507fff     – Vladyslav Feb 25 '15 at 12:55
  • Okay, open up dash (super key) and type in Software & Updates then click on it. Navigate to the "Additional Drivers" tab. Is Broadcom Corporation BCM43142 listed and selected? – DJ_Beardsquirt Feb 25 '15 at 12:58
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    Yes, it says 'This devise is using an alternative driver'. I already did this operation a few hours ago, but nothing changed – Vladyslav Feb 25 '15 at 13:02
  • What is your network indicator telling you? Is Wireless Networks displayed, but greyed out? Or is it just not there at all? Look here if you don't know where to look: http://www.techotopia.com/images/c/c9/Ubuntu_11_unity_network_menu.jpg – DJ_Beardsquirt Feb 25 '15 at 13:18
  • Wireless Networks is not displayed https://pp.vk.me/c625528/v625528560/1be5e/lbIKHCcOeCY.jpg – Vladyslav Feb 25 '15 at 13:23
  • What kernel are you using uname -a – Jeremy31 Feb 25 '15 at 13:27
  • After uname -a

    Linux vladyslac-Desktop 3.16.0-30-generic #40~14.04.1-Ubuntu SMP Thu Jan 15 17:43:14 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

     – Vladyslav Feb 25 '15 at 13:38
  • Possible duplicate of Installing "fimware-b43-installer" offline – Sadegh Feb 10 '16 at 10:02

3 Answers3

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With a computer with working internet go to http://packages.ubuntu.com/utopic/amd64/bcmwl-kernel-source/download and select a mirror site to dowload from. Copy the file to a USB, DVD or whatever to get in on the Ubuntu pc and double click on it to install

Jeremy31
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My laptop has the same wireless hardware. The easy solution is: When you install ubuntu, check the box which says install third party software(wireless driver included in that). Then everything works out of box.

Tom
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  • to install them after an installation run sudo apt-get install ubuntu-restricted-extras – DJ_Beardsquirt Feb 25 '15 at 13:30
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    No wifi, no connection to internet. The package ubuntu-restricted-extras is for things like playing video files, the wireless driver is not included. – Tom Feb 25 '15 at 13:33
  • Ah, yeah. I was assuming he still had ethernet but I just re-read his comments and noticed that he doesn't have ethernet on his machine. – DJ_Beardsquirt Feb 25 '15 at 13:35
  • I should reinstall my Ubuntu system? Can you give me a screenshot of that checkbox, please? – Vladyslav Feb 25 '15 at 13:44
  • http://cdn5.howtogeek.com/wp-content/uploads/2013/04/ubuntu-install-third-party-software.png I also suggest selecting Download updates while installing – DJ_Beardsquirt Feb 25 '15 at 13:50
  • Yes, just reinstall, and you will see the check box. It's easy to see. Sorry I don't have a screenshot. – Tom Feb 25 '15 at 13:54
  • I see you have internet connection, here is another solution: click System settings > Software & Updates > Additional Drivers > let it search and tick the result you want and then click apply change – Tom Feb 25 '15 at 14:03
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Do the command:

sudo gedit /etc/NetworkManager/NetworkManager.conf

This will open up that file in a text editor. Change the line that has managed= to:

managed=true

Save and close the file, then do:

sudo killall NetworkManager

Logout and log back in again. Answer taken from: Ubuntu 12.10 - network manager not listing wireless networks

Community
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DJ_Beardsquirt
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  • After that, I have some system problems, but wi-fi isn't shown – Vladyslav Feb 25 '15 at 13:40
  • What system problems did it cause? – DJ_Beardsquirt Feb 25 '15 at 13:42
  • I have no idea, it shows, call me about problem, and hides – Vladyslav Feb 25 '15 at 13:45
  • Okay, undo the changes. use sudo gedit /etc/NetworkManager/NetworkManager.conf to open the network manager configuration file and remove the line managed=true. Save and exit, then run sudo killall NetworkManager. After logging out and in again follow the instructions by @Jeremy31 at: http://askubuntu.com/a/589786/143396 – DJ_Beardsquirt Feb 25 '15 at 13:48
  • I'll try it now – Vladyslav Feb 25 '15 at 13:50
  • YES)) I have wi-fi connection :) thank all of you a lot)

    but, how do you think, should I reinstall my system? because, sometimes ubuntu shows me some problems...

     – Vladyslav Feb 25 '15 at 14:07
  • If you do a clean install you'll probably need to repeat the steps in Jeremy31's solution, and even then you may still end up receiving errors. I suggest you click on show details next time you receive an error and you open up another question here on askubuntu. It's a great chance to learn a lot. – DJ_Beardsquirt Feb 25 '15 at 14:11
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    By the way, I don't remove the line managed=true to false, and it works

    Now, I'll reinstall ubuntu system, do the same way to create wireless connection and will write here, for describe what happened

    It'll take about 30 min

     – Vladyslav Feb 25 '15 at 14:15
  • Okay, good luck. Thanks for clarifying about managed=true. – DJ_Beardsquirt Feb 25 '15 at 14:23
  • Just now, I'm connected to wi-fi :)

    I reinstalled Ubuntu 14.04, did what said @jessenorton; and @Jeremy31; and it works :)

    Thanks a lot!

     – Vladyslav Feb 25 '15 at 15:09