Recently when Ubuntu 12.04 was developed with PhpmyAdmin, Connection for Controluser as defined in your Configuration failed after logging in
This tip, when I looked it up, was an extension to the new PHpmyAdmin version, and I didn’t enable it.
Now take a look at your own steps:
1. In the usr/share/doc/phpmyadmin/examples find create_table. SQL. Gz, decompression
Sudo Gzip create_table.sql.gz can then import the SQL file directly from phpmyAdmin
2. After successful import, go to the directory etc/phpmyadmin and modify config.inc. PHP
$dbuser = ‘phpmyadmin’;
$dbpass=’ password ‘;
$basepath=”;
$dbname=’phpmyadmin’;
$dbserver=”;
$dbport=”;
$dbtype=’mysql’;
// So I changed the next two lines
$dbuser = ‘phpmyadmin’;
$dbpass=’ password ‘; // change the password to the corresponding user
3. Restart apache server after modification
The error message will disappear,

Reference:
http://ckwsteven.pixnet.net/blog/post/27469170-phpmyadmin%E9%8C%AF%E8%AA%A4%E8%A8%8A%E6%81%AF%EF%BC%9A-connection-for-controluser-as-defi
http://www.rvdavid.net/how-to-fix-phpmyadmin-error-connection-for-controluser-as-defined-in-your-configuration-failed/
http://wiki.phpmyadmin.net/pma/pmadb