Ubuntu – Problem with Broadcom BCM43142 wireless driver on 14.04


I have been facing some issues with the wireless drivers on my lenovo Z5070 laptop. Here is the history of the problem

  1. After installing 14.04 Wifi was not working. So I followed the below article and installed bcmwl-kernel-source.

Installing Broadcom Wireless Drivers

  1. After installing this driver, I am able to connect to Wifi. But the connection drops every now and then. I searched online and found the below article. But the issue in the referred article uses a different wifi chipset.

Drivers for Broadcom BCM43142 on Ubuntu 14.04 (Trusty Tahr)

Please help me fix this. I installed all the upgrades to check if that fixes the issue. But it didn't help. I also tried disabling the ipv6.

Best Answer

  • I've been struggling with the same issue with Broadcom BCM43142 on my HP Envy 15 Touchsmart, Ubuntu 14.04. The Wifi card performance deteriorated after an update I did with Software Updater.

    I tried purging and reinstalling bcmwl-kernel-source, installing firmware-b43-install and b43-fwcutter in various combinations. Nothing worked.

    In the end, I had to downgrade bcmwl-kernel-source to a lower version by doing the following in the terminal:

    sudo apt-get remove --purge bcmwl-kernel-source
    sudo apt-get install bcmwl-kernel-source=
    sudo reboot

    It's not ideal, but the wifi now works as it did before the update.