[ubuntu] Wireless Problem HP 620 Laptop ..

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http://ubuntuforums.org – hi all , My friend facing a problem of wireless his laptop is HP 620 and there's no wireless connection in Ubuntu 10.04.. Although there is a connection in WIN7 result of iwconfig : Code: lo        no wireless extensions. eth0      no wireless extensions. wlan0    802.11bgn  Nickname:"rtl8191SEVA2"           Mode:Managed  Frequency=2.427 GHz  Access Point: Not-Associated            Bit Rate:135 Mb/s            Retry:on  (HowTos)