How to Configure Displays in Duplicated and Extended Modes

Article Number: DH-009

​​​​​​​​​​​​​​​​​​​​​Current AMD graphics cards can support multiple displays at the same time and can be arranged into the following configurations:

    • Duplicated – The desktop is duplicated (including resolution) on more than one display. This setup can be useful for running demos and presentations.
    • Extended – The desktop is extended across multiple displays. Each extended display has its own unique desktop area (including screen resolution and refresh rate). This setup can be used to provide additional desktop space.
    • AMD Eyefinity – Enables two or more displays to be grouped to work together as a single desktop. When displays are grouped together, the desktop resolution and workspace area increase according to the number of displays in the group, and each display shows a portion of the desktop.  For information and instruction on how to use Eyefinity, please refer to: [Insert KB Link]

This document provides step-by-step instructions on how to set up and configure the following modes:

Duplicating Displays

In Duplicate mode, the same image appears on all displays.  The displays will run using the highest common resolution and refresh rate.  For example:

    • Display #1 has a native resolution of 1920x1080 at 75Hz refresh rate
    • Display #2 has a native resolution of 1280x1024 at 60Hz refresh rate
    • Both displays will run at 1280x1024 at 60Hz in Duplicate mode

To set up Duplicate mode:

  1. Right-click on an empty area on the Desktop, and select Display Settings from the menu


  2. In the Displays Setting menu, it should list all detected displays (in the example below, 2 displays are used).  Click on the Multiple Displays drop-down menu, and select Duplicate these displays.


    Note! If all displays are not listed, click Detect to refresh the display devices.  If all displays are still not detected, make sure that the graphics driver has been successfully installed and that the displays are properly connected to the graphics card.  For instructions on installing AMD graphics drivers, please refer to KB: How To Install Radeon Software Crimson ReLive Edition on a Windows Based System

  3. Click Apply


  4. Click Keep changes button


  5. Close Display Settings to exit.

Enabling Extended Desktop

In Extended mode, the Desktop is extended across multiple displays to maximize the work space. The displays can have different screen resolutions, refresh rates, and orientations (Portrait and Landscape) when configured in Extended Desktop mode.  

The next section of this document covers:

    • How to Enable Extended Desktop Mode
    • Arranging the Displays in Extended Mode

How to Enable Extended Desktop Mode

  1. Right-click on an empty area on the desktop, and click Display Settings


  2. In the Display Settings menu, it should list all the detected displays with the main display highlighted by default (in the example below, 3 displays are used).  

  3. Select “box 2”, click on the Multiple Displays drop-down menu and select Extend Desktop to this display


    Note! If all displays are not listed, click Detect to refresh the display devices.  If all displays are still not detected, make sure that the graphics driver has been successfully installed and that the displays are properly connected to the graphics card.  For instructions on installing AMD graphics drivers, please refer to KB: GPU-751

  4. To extend another display (in this example the third display), select “box 3” and click on the Multiple Displays drop-down menu then select Extend Desktop to this display

  5. Click the Apply button

  6. Click the Keep changes button
     

  7. Close Display Settings to exit.

Arranging the Displays in Extended Mode

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In Extended Desktop Mode, you may need to arrange the Desktops to match the physical layout of the displays so that the mouse moves correctly across all displays. 

To arrange the Desktops:

  1. In Display Settings, the numbers representing the displays indicate the current Desktop arrangement.  If the logical arrangement does not match the physical placement of the displays, the mouse will not move across the displays in the correct order.


  2. Click Identify to see how the displays are being detected by Windows.  A unique number will appear on the lower left corner of each display.


    In this example, Windows Display Settings does not match the physical arrangement of the displays


  3. In Display Settings, drag and drop the boxes so that they match the order of the physical displays as shown above.  In this example:

    From:

    To:


    Now the logical display arrangement matches the physical placement of the displays


  4. Click Apply


  5. Click Keep changes
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Footnotes