Did not set a password but system keeps ask for an authentication for updates.

When you sign in, do you not put in a username and a password? Try that password.

I don't sign in. Nothing has a password.

________________________________
 From: arochester <email address hidden>
To: <email address hidden>
Sent: Sunday, April 22, 2012 2:40 PM
Subject: Re: [Question #194394]: Did not set a password but system keeps ask for an authentication for updates.

Your question #194394 on yelp in Ubuntu changed:
https://answers.launchpad.net/ubuntu/+source/yelp/+question/194394

    Status: Open => Answered

arochester proposed the following answer:
When you sign in, do you not put in a username and a password? Try that
password.

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You received this question notification because you asked the question.

You might have it set up to log in automatically when you boot the computer, but there is _always_ a password for your login. This password is _required_ to do the software updates, install new programs, install a printer, or do any of the other maintenance tasks you will need to do in the future.

When installing Ubuntu you would have selected a username, and then typed in a password twice. That is the password that you need now.

This is not a bug, it's what keeps your computer safe by not giving any programs permission to change important files on your computer. The password should be a good one that could not easily be guessed by someone trying to break into your computer.

If you can't remember what password you used, boot into a root shell command prompt and change it.

* If you always get the grub boot menu when you turn the computer on, jump to the next step, otherwise turn the computer on and when you see the BIOS start to POST (mem test, logo etc) press and hold the left shift key.

* When the grub boot menu comes up, Select the Ubuntu recovery option.

* When the next menu comes up, select Root command prompt

Once you have the command prompt, type the following:

passwd username

where 'username' is the username you set up when you installed Ubuntu. Once you've changed the password you can just reboot with the command

reboot

Chris