1. Stop the MySQL Server.
sudo service mysql stop
2. Start the mysqld configuration.
sudo mysqld --skip-grant-tables &
3. Login to MySQL as root.
mysql -u root mysql
4.. Replace YOURNEWPASSWORD with your new password!
UPDATE user SET Password=PASSWORD('YOURNEWPASSWORD') WHERE User='root'; FLUSH PRIVILEGES; exit;Kopiert von: http://ubuntu.flowconsult.at/en/mysql-set-change-reset-root-password/