This is mini Howto in order to install sony vaio vgn-fe31h modem in ubuntu linux. First we will need to know the kernel release ( uname -r ) that we have, and then we will download the corresponding file with HSF drivers from here. Unzip the file with unzip hsfmodem*.zip and install it with sudo dpkg -i hsfmodem*.deb <— need reboot We will make our wvdial.conf file with sudo wvdialconf /etc/wvdial.conf Open wvdial.conf with sudo nano /etc/wvdial.conf and add the correct username password and phone number. Save and exit file. Then just type wvdial from terminal to connect.