I've made new admin account. I did not set a password for that account and it now asks me for the password. Since I can access the account as it automatically logs on when the laptop is turned on, can I set a new password?
You can set a password from terminal, just open up your favorite terminal and type:
If your feeling advanced you can stop Ubuntu prompting for password by configuring
Here's an example of configuring polkit to enable users to install apps without authentication.
There is no way you can set password from there.
Restart your PC.
Go to recovery mode.
Press enter on prompt-shell
(command prompt will open with root access)
Type :- passwd (admin-name)
Then its all ok.
From the sounds of it, you may not understand what exactly an "admin" account is - My answer may be irrelevant, but it seems appropriate to leave it here, anyway.
For a user to be an "admin" - they have to be in the
sudo group -
$ sudo usermod -G sudo -a yourAdminUser
yourAdminUser will be a real admin.