I am using a HP dv2000 series laptop. I have a broadcom 802.11g wireless apapter installed on the machine. While surfing the internet in Ubuntu 12.04, sometimes the Wifi gets disabled automatically. (sudo rfkill list shows that Wlan is hard locked). I have tried commands like sudo rfkill unblock all
But the hard lock still remains. I have to always restart my laptop to get the Wifi working again.
Any solutions to this problem?