With a coffee cup for an icon, Caffeine is a status bar
application which sits in the panel near the clock and prevents the desktop
from becoming idle. Simply click on the icon and choose Activate to temporarily
prevent the activation of both the screensaver and the "sleep" power
saving mode. Click the
icon again and choose Deactivate to go back to normal.
Caffeine is not installed out-of-the-box with MATE, but it is available at no charge in the Software repositories. See: Software Centers for how to enable a software center for access to the repositories.
