Mysql in Xampp Doesn't Work

Question

after upgrading the kernel to 4.0.3 in ubuntu phpmadmin in xampp does not work

I will try it

 sudo /opt/lampp/lampp start

Starting XAMPP for Linux 5.6.8-0 ... XAMPP: starting Apache ... is fine. XAMPP: starting MySQL ... is already running. XAMPP: launch ProFTPD ... ok.

and

sudo /opt/lampp/lampp stop

Stopping XAMPP for Linux 5.6.8-0 ... XAMPP: Stopping Apache ... does not work. XAMPP: stopping MySQL ... ok. XAMPP: stopping ProFTPD ... does not work.

I will try it

sudo service mysql stop

Failed to stop mysql.service: the mysql.service module is not loaded.

and

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

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

Finally, I uninstall xampp and reinstall, but MySQL is not working