Q:

How do I access PHPMyAdmin in Ubuntu?

I am trying to log into phpmyadmin however when I type username as "root" and password as blank, I get the error:  
Login without a password is forbidden by configuration   

I had a look at the accepted answer here: Can anyone confirm that phpMyAdmin AllowNoPassword works with MySQL databases? 
I uncommented the line (in /etc/phpmyadmin/config.inc.php)  :    
$cfg['Servers'][$i]['AllowNoPassword'] = TRUE;  

but to no avail
Any help would be appreciated. 

A:

Try to reset your password in your MySQL like this:
Set / change / reset the MySQL root password on Ubuntu Linux. Enter the following lines in your terminal.

Stop the MySQL Server. 
sudo /etc/init.d/mysql stop
Start the mysqld configuration. 
sudo mysqld --skip-grant-tables &
Login to MySQL as root. 
mysql -u root mysql
Replace YOURNEWPASSWORD with your new password! 

UPDATE user SET
      Password=PASSWORD('YOURNEWPASSWORD') WHERE User='root'; FLUSH
      PRIVILEGES; exit;

Note: This method is not regarded as the securest way of resetting the password. However it works.
References:

Set / Change / Reset the MySQL root password on Ubuntu Linux
How to Reset the Root Password

