Access denied for user

This is new instalation, no update
MariaDB [(none)]> create user dbuser identified by 'mysql';
Query OK, 0 rows affected (0.00 sec)
MariaDB [(none)]> grant ALL privileges on . to 'dbuser'@'%';
Query OK, 0 rows affected (0.00 sec)

Then from the shell:
$ mysql -p -u dbuser
Enter password:
ERROR 1045 (28000): Access denied for user 'dbuser'@'localhost' (using password: YES)

I even created a valid Linux user with the name dbuser before adding it to database.

Log file is useless:
121122 09:49:11 mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql
121122 9:49:11 InnoDB: The InnoDB memory heap is disabled
121122 9:49:11 InnoDB: Mutexes and rw_locks use GCC atomic builtins
121122 9:49:11 InnoDB: Compressed tables use zlib 1.2.6
121122 9:49:11 InnoDB: Using Linux native AIO
121122 9:49:11 InnoDB: Initializing buffer pool, size = 128.0M
121122 9:49:11 InnoDB: Completed initialization of buffer pool
121122 9:49:11 InnoDB: highest supported file format is Barracuda.
121122 9:49:12 InnoDB: Waiting for the background threads to start
121122 9:49:13 Percona XtraDB (http://www.percona.com) 1.1.8-26.0 started; log sequence number 1776818
121122 9:49:13 [Note] Plugin 'PBXT' is disabled.
121122 9:49:13 [Note] Event Scheduler: Loaded 0 events
121122 9:49:13 [Note] /usr/sbin/mysqld: ready for connections.
Version: '5.5.25-MariaDB' socket: '/var/lib/mysql/mysql.sock' port: 3306 Mageia - MariaDB Community Edition (GPL)

Nothing else