UPDATE (5/7/2014): It turns out I continued to have connectivity issues, which were exacerbated when I downloaded a large file. After 60mb, it seemed to kill WiFi. I tried reloading the Broadcom drivers and various other things, but it wouldn’t work. Changing to the proprietary drivers under Software & Sources->Additional Drivers fixed the issue for me:
My Macbook Pro 13″ was having connectivity issues after the upgrade to 14.04 LTS. It would stay connected to the hotspot, but would not transmit data.
Issuing “$ sudo service network-manager restart” would temporarily resolve the issue, but it was getting annoying doing that every 10 minutes or so.
- Run these commands:
# modprobe -r b43 && modprobe b43
- The reboot.
WiFi should stay connected now.