I am trying to configure a Huawei USB modem (provider - Tata Photon) on a Dell Vostro notebook running Ubuntu 12.04. I have followed instructions given on the provider's web site at <www.tataphoton.com/download/dialers/dialup-internet-on-linux.pdf>. At one point I am required to run the "gedit /etc/wvdial.conf" command in the terminal to open the configuration file. However, that file is refusing to open and I am getting an error message in the file edit pop-up window, which says I do not have permission. In the terminal itself, the output is the following:
** (gedit:6932): CRITICAL *: gedit_conversion_error_info_bar_get_encoding: assertion 'menu' failed
I would really appreciate some help here.