What is Authentication Password and how to retrieve it?
 

Thanks for guidance received against my last thread. Accordingly I changed my root password successfully. Still the password is not working. Same problem arises when I try to install any application from Net. It prompts for Authentication Password. Attached files (same file in two formats) containing my Desktop's screen-shot may explain my problem.

SomnathAttachment 15073

can you try with terminal?

the command is:

For ubuntu, the user in the adm and sudo group has root priviledges and gives the users password to do root level stuff. As long as there is at least one user and that user is in the right groups permissions wise it can do root things via sudo. You can of course break this behavior, but better to use things as intended.

$ lsb_release -a

What Shadow_7 is saying - more simply put - is that you should use your normal user password, not the root password you established. Ubuntu is using sudo which allows a normal user to carry out administrative tasks using his own password.