Update for Ubuntu 16

[jigarshah]

please update if possible if any steps needs to be changed for ubuntu 16.

[oldstonegryzzly]

For Ubuntu 16.04 modify this:

./hex2hcd BCM20702A1_001.002.014.1443.1572.hex BCM20702A0-0489-e07a.hcd

to

./hex2hcd BCM20702A1_001.002.014.1443.1572.hex BCM20702A1-0489-e07a.hcd

[mathiasose]

Wifi on 16.04

So I upgraded to (Kubuntu) 16.04 and after the reboot the wifi stopped working.

Because I tried a few different things, the solution is not entirely clear to me, but I think you need only sudo apt-get install --reinstall bcmwl-kernel-source (the reinstall part is important), which will ask you to go into BIOS and disable secure boot.
It also gave a single line of modprobe error message, not able to insert wl, but that didn't seem to matter?

After doing the reinstall and disabling secure boot I had wifi again.

Would be great if someone could confirm if those two steps works for them.

[redbmk]

Wifi was working for me after an update to 16.04, but only after following these steps. However after the latest apt-get dist-upgrade all I can see now is "HP-Print-B6-Officejet 6700" which is not something I've ever connected to and isn't actually a network in the area - in fact it's followed me to an entirely different city. I'll try some of the suggestions above as well and see if that helps.

[redbmk]

Hmm, a second restart actually seemed to fix the wifi...weird. And actually now that I think about it what might have gotten wifi working after updating to 16.04 was disabling secure boot. Sorry, I guess that doesn't really help confirm or deny anything.

[mathiasose]

I have occasionally experienced the list of wireless networks being empty (when it shouldn't be).
Both rebooting and sudo service network-manager restart fixed that issue (for a while) and let me connect to a WiFi again.

Since I have been mostly using a wired connection lately I can't really say how often this error occurs.
Seems quite infrequent.

[longsleep]

@mathiasose this is a Ubuntu/NetworkManager issue - please report it there.

[MartinBucko]

@mathiasose this one helps me http://askubuntu.com/a/761220/87890

[mathiasose]

Just did a clean install of (Kubuntu) 16.10 and wifi worked out of the box 😄

(As mentioned I had already disabled secure boot when installing 16.04, that might still be something that is required)