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[ubuntu] No wireless in my ubuntu 12.04 laptop

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http://ubuntuforums.org – I have recently installed the ubuntu 12.04 on my dell inspiron 15R through wubi inside windows ultimate 64 bit. But I cannot see any wireless network as the network icon shows no notifications regarding wireless connection. May be the driver is not working. I have searched other threads on other sites and follow a thread to unistall bcm-kernel-source and then install the firmware-b43-installera and b43fwcutter . But it didn't work. here is the results of lspci -vvv Code: $lspci -vvv 00:00.0 Host bridge: Intel Corporation Ivy Bridge DRAM Controller (rev 09) Subsystem: Dell (Hardware)