In Ubuntu, you need to re-enter the password to automatically lock the screen every few minutes.

Sometimes the system automatically locks the screen without using Ubuntu in a few minutes. This is a security measure to prevent others from using your system when you are not there. But for most people, this is unnecessary, especially for Ubuntu virtual machines. There is nothing important in it. It is very boring and time-consuming to re-enter the password to unlock the screen after each lock.

Recommended reading:

Download, install, and configure Ubuntu 14.04

Ubuntu 14.04 system:

Ubuntu 14.04 text tutorial on hard drive installation in Windows 7

Install Ubuntu 14.04 LTS official version on a USB flash drive

Solution:

(1) Open the system settings, find the settings (brightness and screen lock), and enable the settings, such:

(2) You can set how long the screen will be closed and the screen lock time will be set based on the prompts. You can do this by setting "never" or "Off.

In this way, the screen will not be automatically closed or locked.