Por favor, abra um terminal e faça:
sudo apt-get install linux-headers-generic build-essential
wget http://www.orbit-lab.org/kernel/compat-wireless-3-stable/v3.5/compat-wireless-3.5.1-1-snpc.tar.bz2
tar -xf compat-wireless-3.5.4-1-snpc.tar.bz2
cd compat-wireless-3.5.4-1-snpc
./scripts/driver-select alx
make
sudo make install
sudo modprobe alx
Sua ethernet agora deve estar funcionando.
Quando uma nova versão do kernel é instalada pelo Update Manager, recompile:
cd compat-wireless-3.5.4-1-snpc
./scripts/driver-select restore
./scripts/driver-select alx
make clean
make
sudo make install
sudo modprobe alx