dpkg-reconfigure is non-interactive

Problem

You try to use dpkg-reconfigure to configure an existing package. However, you can not select any option from the list .

Solution

You need to configure the dpkg-reconfigure to be interactive. The command for it is:

sudo dpkg-reconfigure debconf

It gives you 6 choices

1. Dialog
2. Readline
3. Gnome
4. Kde
5. Editor
6. Non-interactive

Option 1 is the best choice for remote SSH users.

Then it asks you level of priority question to ask. Select the lowest one you feel comfortable to answer.

As soon as you exit the configuration screen, you can use dpkg-reconfigure with interaction to the system.