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[ubuntu] Please help !!!wireless connectivity lost after upgrade/ update

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linux-howto

http://ubuntuforums.org – Iam a newbie to Ubuntu and linux .... I had install Ubuntu 12.04.1 precise pangolin LTS last month Had no problems with connectivity , both wired and wireless connections worked ... until recently I happened to install and upgrade the Ubuntu repositories... after restart the wired connection works but my wireless connection is lost completely ... I use a wireless router at home .. all my other wireless devices can pick up and connect to the internet through the router well .... I now only use wired connection.... I wonder how can upgrading the Ubuntu software using terminal destroy wireless (Hardware)