wifi and wired connection not working in ubuntu 12.10

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http://askubuntu.com – I recently installed Ubuntu 12.10 in my laptop (Dell Inspiron 14Z 5432) alongside Windows. But both my WiFi and wired connections are not working. It's working fine in Windows. I tried downloading the compact wireless file and followed these steps: tar -xvf compat-wireless-2012-07-03-p.tar.bz2 cd compat-wireless-2012-07-03-p scripts/driver-select alx make sudo make install sudo modprobe alx But I get a report of error and it's still not working. (HowTos)