Wireless (WIFI) not working with kernel > 4

[marcbelmont]

I'm running the following kernel in order to fix GPU issues. However, upgrading the kernel broke the wireless..
Linux marc 4.0.9-040009-generic #201507212131 SMP Wed Jul 22 01:33:03 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

If you are having this issue, updating the Broadcom wireless driver will help.

https://github.com/longsleep/bcmwl-ubuntu

Commands to run

sudo add-apt-repository ppa:longsleep/bcmwl
sudo apt-get update
sudo apt-get install bcmwl-kernel-source

[hg8]

You can also download and install bcmwl-kernel-source from the Wily repository. It will work too.

[growing]

There's a guide for fixing this here; http://hgdev.co/installing-ubuntu-15-04-on-the-xps-13-9343-2015-a-complete-guide/

[jbtrystram]

If you installed the 4.2 kernel you won't be able to install longsleep driver as it is.
Switch to branch "linux-4.2" and refer to this issue : longsleep/bcmwl-ubuntu#6