MulTiple Displays
MATE
makes connecting mulTiple monitors and changing the resolution quite easy. Changing monitor preferences
is accomplished by selecting Menu > Control Center
> Displays in the menus.
When you connect a second monitor, it will likely connect automatically. If it doesn't, simply click on the black rectangle that represents the second monitor and choose the On setting. When the display is switched to "On" the rectangle will be in color.
Select the resolution settings you prefer. The list includes all of the resolutions that the monitor is capable of displaying. In this example, an HDMI cable is used to connect a 1080P television as a monitor.
To apply the settings, click the Apply button.
The new configuration is set temporarily. If you don't confirm the settings, for example, if the settings don't work properly, after a short delay the configuration will revert to the previous settings.
Click on Keep This Configuration to confirm your changes.