Wireless Not Working Ubuntu 14.04

Question

Wireless isn't working in ubuntu 14.04, even after installing bcmwl-kernel-source package & enabling it via: Software & Update/Additional Drivers Also, There are no options to enable a Wireless network in System Settings/Network. I work on a new Dell Inspirion 3543.

Here are the Network card details:

06:00.0 Network controller [0280]: Broadcom Corporation BCM43142 802.11b/g/n [14e4:4365] (rev 01)
    Subsystem: Dell Wireless 1704 802.11n + BT 4.0 [1028:0016]
    Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
    Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
    Interrupt: pin A routed to IRQ 255
    Region 0: Memory at f7200000 (64-bit, non-prefetchable) [disabled] [size=32K]
    Capabilities: <access denied>

07:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller [10ec:8136] (rev 07)
    Subsystem: Dell Device [1028:0656]

dpkg -l | grep bcmwl result:

ii  bcmwl-kernel-source             6.30.223.248+bdcom-0ubuntu1 

amd64        Broadcom 802.11 Linux STA wireless driver source

I already tried the answer:

Drivers for Broadcom BCM43142 on Ubuntu 14.04 (Trusty Tahr)

But still bcmwl-kernel-source wouldn't install correctly, it gets installed with no wl!

Add the results of dpkg -l | grep bcmwl to your question. The -l is a lower case L not a 1(one) — Jeremy31, Apr 21 '15 at 10:11
done: `ii bcmwl-kernel-source 6.30.223.248+bdcom-0ubuntu1
amd64 Broadcom 802.11 Linux STA wireless driver source` — user3305447, Apr 21 '15 at 16:39
Please run the WiFi diagnostics and [edit] your question to include a link to the result. — David Foerster, Apr 21 '15 at 17:21
In terminal, do sudo apt-get install bcmwl-kernel-source and paste the output to paste.ubuntu.com and post the URL and post cat /etc/modprobe.d/* | grep wl — Jeremy31, Apr 22 '15 at 21:58

lumen · Answer 1 · 2015-04-23T18:52:54.093

1

Which kernel you are using (uname -a)?

I had the same problem after updating from 3.19 to 4.0 because the bcmwl-kernel-source package isn't working with 4.0 at the moment. If this is your problem, you can find more information about it (and the patch) here.

Edit: If someone is looking for the patch and how to apply it: longsleep (the author) updated the readme section of the project on how to build and install the package.

edited Apr 23 '15 at 18:52

answered Apr 20 '15 at 13:22

lumen

485

Kernel: Linux 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 – user3305447 Apr 20 '15 at 15:04
If the patch is required, Would you please explain how to use it? because I'm new to Linux. – user3305447 Apr 20 '15 at 15:06
I'm afraid that my suggestion won't work for you because of the different kernel. I found another question with the same probleme here: http://askubuntu.com/questions/459654/drivers-for-broadcom-bcm43142-on-ubuntu-14-04-trusty-tahr. Perhaps this can help you. – lumen Apr 21 '15 at 08:08
Thank you, I already tried this answer but still having a problem in installing bcmwl-kernel-source .. it gets installed but without wl. – user3305447 Apr 21 '15 at 16:38
What does a sudo modprobe wl shows? And please use the script that David Foerster mentioned and post the results here. – lumen Apr 22 '15 at 06:18

Wireless Not Working Ubuntu 14.04

1 Answers1