Running fresh install of 12.04lts on lenovo b570e with bcm 4314.
Wireless wouldn't connect at all at first, then a looked online for drivers and managed to get it working, it worked ok for a few hours and now it disconnects and keeps trying to reconnect but never does.
rfkill list all:
0: ideapad_wlan: Wireless LAN Soft blocked: no Hard blocked: no 1: brcmwl-0: Wireless LAN Soft blocked: no Hard blocked: no
Can anyone see what's going wrong?