Please forgive me if there's any answer out there and I just haven't found it.
I've been reading up on this topic quite a bit (about a week,) google, ubuntu bugs, askubuntu, you name it... have already disabled this driver just so I could get the wifi to work. Took a look and this is the one that comes pre-packaged with this distro (I believe.) Usually I'm pretty steadfast and try to do my homework as 99% of the time others have hit the issue already, and created a workaround or solved it...
My current state -- I've got the wireless working like probably a lot of ubuntu users out there. Though I'm not exactly thrilled with using the open source driver as it doesn't support power management I don't believe, ideally this is something I'd like to take advantage of being very conservative and loving my extended battery life. My battery life in Ubuntu right now is horrid compared to windows (slowly working on that.)
I've got a Dell Latitude E6430, with an extended battery, so every last bit of power savings I can squeeze out of this the better, even if it means resorting to using Broadcom's already proving to be a pain.. driver.
Any insight, help, etc.. is greatly appreciated and if there's anything else I can do to help please let me know. I'm more than willing to dive into this and give any info needed, just let me know.
http://www.broadcom.com/support/802.11/linux_sta.php -- 188.8.131.52
Here's some basic info to start:
some_user@some_host:~$ lspci | grep Wireless
03:00.0 Network controller: Broadcom Corporation BCM4313 802.11bgn Wireless Network Adapter (rev 01)
eth0 no wireless extensions.
lo no wireless extensions.
Mode:Managed Frequency:2.412 GHz Access Point: F8:1E:DF:FA:B4:A5
Bit Rate=28.9 Mb/s Tx-Power=19 dBm
Retry long limit:7 RTS thr:off Fragment thr:off Power Management:off Link Quality=52/70 Signal level=-58 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:24 Invalid misc:63 Missed beacon:0