by 
Prombar
ANSWERS: 1
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In Ubuntu, the root account does not have a password, so you can't login using this account (it's by design). The first account created during installation becomes a member of the 'admin' group and can gain 'root' privileges by typing in 'sudo' (or 'gksudo' for the graphical version) in front of the command. So by typing the following command in a terminal window: gksudo gedit /etc/X11/xorg.conf you're telling the OS to 'super-user' do the command. In this case, it's use the application 'gedit' to open the file 'xorg.conf'. You'll be prompted to enter YOUR password. If this doesn't work, you may not be part of the 'admin' group. So, the questions I would have for you are this: 1. Did you install Ubuntu or did someone else? 2. If you did it, what was the first account that you created during installation? This account can use 'sudo'; any secondary accounts that are created do not have the ability to run sudo (unless explicity assigned to the 'admin' group). 3. If it was someone else, either you need to use the first account or have them add your user account to the 'admin' group.
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