However a system no one is perfect. There's always a shortage that could occur. Every system will experience a limit process when the system is forced to work overload. For Windows users often experience when working excessive system failure which is often called the 'Crash' or 'hangs'. In ubuntu linux this can also occur. For windows users, to address this combination is done by pressing CTRL + ALT + DEL. But in Linux OS it can not be done. For linux, how to emergencies that can be done is to log into the Linux terminal, by pressing CTRL + ALT + F1, login menggunkan your account and then restart the linux with the command:
sudo shutdown -r now.
(D26ubuntu.wordpress)