Try to update the driver:
Code:
sudo apt-get install --reinstall linux-headers-$(uname -r) linux-headers-generic build-essential dkms
wget http://media.cdn.ubuntu-de.org/forum/attachments/35/41/2844083-rtl8712u-2.6.6.0.2_dkms.tar.gz
sudo tar xvf 2844083-rtl8712u-2.6.6.0.2_dkms.tar.gz -C /usr/src
sudo dkms add -m rtl8712u -v 2.6.6.0.2
sudo dkms build -m rtl8712u -v 2.6.6.0.2
sudo dkms install -m rtl8712u -v 2.6.6.0.2
echo "blacklist r8712u" | sudo tee -a /etc/modprobe.d/blacklist.conf
Reboot and check:
Code:
iwconfig
lsmod | egrep 'r81|8712'
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