XAMPP: Couldn’t start MySQL

If you use XAMPP, can happen to you the problem of MySQL does not start. This usually happens when we copy the XAMPP folder between computers or even when repomos a copy of the folder entirely.

Here I present to you the possible solutions to resolve this berbicacho. Try one at a time in the order shown and only pass the following case does not get resolved.

1st. 

sudo chmod 755 /opt /lampp/etc/my.cnf

2nd. 

sudo chmod -R 777 /opt/lampp/var/mysql

3rd. 

chown -hR root /opt/lampp

文章摘自:http://adventux.blogspot.pt/2012/11/xampp-couldnt-start-mysql.html