GSM mobile internet connection using wvdial
 

Hello, I'm from India and I use tata docomo as my carrier. I have activated GPRS and many people say that it works perfectly on a laptop with Windows. But I don't use windows. My service provider has not provided us with a username and a password. It works fine without these on the mobile and a laptop with windows. But when I use it on ubuntu 9.10 with wvdial, it exits saying required username and password. How do I overcome this problem. Please help.

Try giving it blank username and password, i.e.
in wvdial configuration.

If that doesn't help, post your current wvdial configuration (if there are some things you shouldn't show publicly, replace them with something like *hidden* to show you've set them but don't want to reveal them -- obviously username and password are such things, but not in this case if you don't need them). I don't use wvdial with a gprs/3g modem currently, so my help is a little limited, but posting the configuration may help others to help you.