After Apple (Macbook Pro) boot no sound solution

Sometimes the Mac does not sound recovery from sleep, it's a Bug Mac OS X systems. This is because the core audio daemon for Mac OS X "coreaudiod" out of the question, although simply reboot the computer can be solved, but if at this time to open a lot of programs there are other circumstances which do not want to restart the computer, you can follow the following method Solve this problem.
　　Steps:
　　1. Open the Activity Monitor on Mac (search for "activity monitor" in the Finder's "Application" can be found).
　　2, in the upper right corner of the search box "Activity Monitor" window type "audio", then you can search for "coreaudiod" process.
　　3, select the "coreaudiod" process, click on the upper left corner of the "Activity Monitor" window "Quit Process" button in the dialog box, click "Exit."
　　4, after "coreaudiod" withdraw from the process will automatically restart when the sound was restored.