I compiled kernel 3.10.2 for my dell laptop I am sure that I selected true module for my wifi but it does not work even I followed instruction on http://wireless.kernel.org/ but it did not help again .
my wifi model is :
I've got an HP 311 NVidia ion laptop with a BCM4312 WiFi card.
What I already did:
installed 14.04 by thumb drive
looked for additional drivers; no additional drivers available
download broadcom-wl-5.100.138.tar.bz2 (put in home folder), b43-fwcutter_018-2.dsc, hybrid-v35-nodebug-pcoem-6_30_223_248.tar.gz