Before either of us get too excited, I have not yet upgraded from Precise and have a different network card. That said, here is a bit of (somewhat) useful information that I've found so far today.
Impatient Executive version:
Try installing the Broadcom-STA driver (wl) via these instructions:
OK, let's hope you're not too impatient just in case I'm wrong about the above.
<a href="http://wiki.debian.org/wl"> Debian Wiki on WiFi using Broadcom driver </a>
More Detailed version:
<a href="https://help.ubuntu.com/community/WifiDocs/Driver/bcm43xx#Installing%20STA%20drivers"> Reference 1 </a>
According to the Ubuntu Docs (Reference 1) you (BCM4311) and I (BCM4312) should be using the 'wl' driver which *does* instruct the blacklisting of ssb and others, as I recall. I say this because I'm currently using a different driver but I've used the 'wl' (broadcom-sta) driver in the past with great success. But somewhere I got steered away from it on this card because it is one of the 'low power' cards.
<a href="https://bugs.launchpad.net/ubuntu/+source/b43-fwcutter/+bug/651010"> Reference 2 </a>
Care to share your lspci information? Here's mine:
$ lspci -vvnn|grep 14e4
For me, the "LP-PHY" means (from some source) that I should use the following (from dpkg):
0b:00.0 Network controller : Broadcom Corporation BCM4312 802.11b/g LP-PHY [14e4:4315] (rev 01)
This is in agreement with what I found earlier in the thread (actually, the original post):
"Had the same problem, then I noticed that instead of firmware-b43-installer I had to install (manually, via synaptic) firmware-b43-lpphy-installer." --Kontza in LaunchPad.
<a href="https://bugs.launchpad.net/ubuntu/+source/b43-fwcutter/+bug/651010" Ref 2 </a>
But also see (again, from the original post):
<a href="https://help.ubuntu.com/community/WifiDocs/Driver/bcm43xx#Installing%20STA%20drivers" Ref 1 </a>
I think our situations are sufficiently different that what I'm currently using is not your solution despite Mr. Konza's expert advice (which applies to me). I am much more familiar with the Debian advice as that is what I've used in the past for some really old hardware using a PCMCIA wifi card (Linksys, I think, but a Broadcom chipset nonetheless).
Care to share what you've tried that hasn't worked?
General comment: This thread started over two years ago. 62 pages is quite a lot and I won't read all of them unless I'm stuck on an elevator and the rest of the Internet is down. :^)
Originally Posted by dm_research