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The Mobile Intel® 82915GM/GMS, 82910GML Graphics and Memory Controller Hub (GMCH) can be attached to multiple display devices. This GMCH has two display pipes and thus can output content to one or two of these display devices at the same time (e.g. integrated LCD+TV, integrated LCD+CRT).
The existence of multiple display devices on a single system allows for a number of possible configuration options. For example, two devices can be driven independently with different content, resolutions, and color depth to increase desktop space. Another possible configuration sends the same content to different monitors to give a presentation to a large audience.
Below are the System Requirements for Multi-Monitor or Multi-Display support:
- System based on integrated Mobile Intel® 915GM/GMS, 910GML Express Chipset Family that has dual pipe enabled by the system manufacturer. System must have the physical connectors for the external display devices.
- Two or more display devices (e.g. LVDS, DVI-I, DVI-D, HDTV, TV-out, CRT, Flat Panel, etc.). Support for these devices may need to be enabled in the System BIOS.
- Microsoft Windows* 2000 or Windows* XP operating system
- Latest graphics driver installed for the Mobile Intel® 915GM/GMS, 910GML Express Chipset Family
Note: The GMCH graphics engine is incapable of operating in parallel with an external PCI Express* graphics device.
The Mobile Intel 82915GM/GMS, 82910GML GMCH supports the following Multi-Monitor or Multi-Display modes:
Intel® Dual Display Clone
- Intel Dual Display Clone is used to drive multiple displays with the same content, same resolution, same color depth, but different refresh rates.
- Intel Dual Display Clone is beneficial when using displays of various types and sizes, such as one pipe driving an integrated LCD, while the other pipe drives an analog overhead projector that may only sync to particular resolutions and refresh rates.
- To activate Dual Display Clone, click the 'Intel® Dual Display Clone' icon on the Devices tab of the 'Mobile Intel® 915GM/GMS, 910GML Express Chipset Family Properties' window. Choose the Primary Device and the Secondary Device and click Apply.
Figure 1: Intel® Dual Display Clone as seen in Windows* XP Advanced Display Properties Intel® Graphics Devices tab.
Extended Desktop
- Extended Desktop refers to the ability of a single adapter with at least two display pipes to support multiple monitor configurations.
- One important use for multi-monitor is to allow for a large Windows* desktop that spans multiple displays, creating more screen real estate than a single display provides.
- The Display applet in Control Panel or the Devices tab in the 'Mobile Intel® 915GM/GMS, 910GML Express Chipset Family Properties' window can be used to configure the size and relative position of each monitor. (Fig. 2)
- Applications can be moved from one monitor to another, or can be on more than one monitor simultaneously.
- To activate Extended Desktop, click on the 'Extended Desktop' icon on the Devices tab of the 'Mobile Intel® 915GM/GMS, 910GML Express Chipset Family Properties' window. Choose which device will be the Primary Device and which one will be the Secondary Device and click Apply.
Figure 2: Extended Desktop as seen in Windows* XP Advanced Display Properties Intel® Graphics Devices tab.
- Display options may also be enabled right from the Windows* Desktop. Right-click on the Desktop to access the Graphics Option menu. The output options will be listed. (Fig. 3)
Figure 3: Display options as seen on the Windows* XP Desktop.
- Applications may behave differently in a multi-monitor configuration depending on their implementation:
- Standard Windows applications that use the GDI (Graphics Device Interface) will clip the window to each display and accelerate the images separately using the display hardware.
- Applications that span multiple monitors and use DirectX*, Direct3D*, or DirectDraw*, will be software accelerated.
- OpenGL* applications may exit unexpectedly, hardware accelerate one display with unknown results on the other, or be software accelerated.
- A full screen command prompt or MS-DOS* application will only function on the Primary Device.
Dual-Pipe Panning
- Panning is enabled when a display resolution is larger than the display type (like integrated LCD or TV which supports only a fixed/limited max resolution).
- Dual-Pipe Panning allows a high-resolution display on a larger screen, while viewing a zoomed-in version on a smaller screen.
- The view on the smaller screen is tied to mouse cursor movement. Since the screens are different sizes, the mouse cursor may be at different positions on either screen.
- While it is within the zoomed-in area of the smaller screen, the cursor acts as normal. As the cursor moves near the edge of the smaller screen, the view pans toward the cursor until the edge of the full screen is reached. This does not affect the view on the larger screen, which stays the same regardless of the activity of the smaller (panned) screen.
- To enable Dual-Pipe Panning, first enable Intel Dual Display Clone or Extended Desktop. Then set the resolution larger than supported by one of the displays and click Apply. The device that cannot support the full resolution will be panned.
Operating System:
| Windows* 2000, Windows* XP Professional, Windows* XP Home Edition, Windows* XP Tablet PC Edition, Windows* XP Media Center Edition |
This applies to:
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