My workbench not connect (no replies)

I installed mysql, when I open th mysql-workbench and try to connet to localhost errors happens.

run mysql status, and is OK!


2014-09-24 19:08:39 - Starting server...
2014-09-24 19:08:39 - Executing 'start mysql'
2014-09-24 19:08:39 - Start server: sudo: sorry, you must have a tty to run sudo

2014-09-24 19:08:39 - Server start done.
2014-09-24 19:08:39 - Checking server status...
2014-09-24 19:08:39 - Trying to connect to MySQL...
2014-09-24 19:08:39 - Lost connection to MySQL server at 'reading initial communication packet', system error: 111 (2013)
2014-09-24 19:08:39 - Assuming server is not running
2014-09-24 19:08:39 - Checking server status...
2014-09-24 19:08:39 - Trying to connect to MySQL...
2014-09-24 19:08:39 - Lost connection to MySQL server at 'reading initial communication packet', system error: 111 (2013)
2014-09-24 19:08:39 - Assuming server is not running

please help me!!!!