Consider the following scenario:

• You are running Windows Vista on a portable computer.
• The screen resolution is set to a resolution that is greater than 1024 × 768.
• You close the lid of the computer, and then it enters sleep mode.

In this scenario, when you open the lid of the computer to resume from sleep mode, the resolution changes to 1024 × 768.

This problem does not occur on desktop computers. Also, this does not occur on a portable computer when you use the Start menu to put the computer into sleep mode.

On a Windows Vista-based computer, when you run the NetProj.exe utility to connect to a network projector, you receive the following error message:

The network projector is unable to display your desktop at the current screen resolution. Please lower the screen resolution and try to connect again.

The computer cannot successfully connect to the network projector.

Consider the following scenario. You are running Windows Vista on a portable computer. You connect an external display to the computer, and then you configure the desktop area to extend across both displays. This configuration is known as “Extended desktop” mode. You turn off the computer, and then you start the computer while the lid is closed. Or, you start the computer, and then you quickly close the lid.

When you log on in this scenario, the resolution of the external display may unexpectedly change. The external display may not use the same resolution as was previously used.

The information in this article applies to the following configuration(s):

• FireGL V3300
• Apple Cinema Display 30″ LCD monitor
• DELL 3007WFP 30″ LCD monitor
• HP LP3065 30″ LCD monitor
• Windows Vista 32bit Edition
• Windows Vista 64bit Edition
• Windows XP Professional
• Windows XP Home Edition
• Windows XP Media Center Edition
• Windows XP Professional x64 Edition

Symptoms:
Resolutions higher than 1280×800 are not available, when connecting above mentioned monitors to a single-link DVI port of the graphics card.

Other single-link DVI supported graphics cards may be affected.

The information in this article applies to the following configuration(s):

• Catalyst Control Center
• ATI Radeonâ„¢ X1600 series
• Windows Vista 32-bit Edition
• Windows Vista 64-bit Edition

Symptoms:
The ATI resolution and color text “mouse over” dialog box may contain a mix of English and Arabic

The information in this article applies to the following configuration(s):

• Catalyst Control Center
• ATI Radeonâ„¢ X1800 series
• Windows Vista 32-bit Edition
• Windows Vista 64-bit Edition
• Windows XP Professional
• Windows XP Home Edition
• Windows XP Media Center Edition
• Windows XP Professional x64 Edition

Symptoms:
Underscan/Overscan slider is grayedout for 1280×768 and higher resolutions even if “Use the scaling values instead of ….” checkbox checked in the Catalyst Control center.

The information in this article applies to the following configuration(s):

• ATI Radeonâ„¢ X600 series
• ATI Radeonâ„¢ X550 series
• Windows Vista 32-bit Edition
• Windows Vista 64-bit Edition

Symptoms:
Invalid maximum resolution shown in displays manager with DFP and CRT monitors in clone mode.

The information in this article applies to the following configuration(s):

• Gods: Land of infinity (demo)
• ATI Radeonâ„¢ X1950 series
• ATI Radeonâ„¢ X1900 series
• Windows Vista 32-bit Edition
• Windows Vista 64-bit Edition

Symptoms:
Having the in-game options set to 1920X1200 32 bpp, Shadows on high and texture quality set to high may results in only the mouse pointer being visible.

The information in this article applies to the following configuration(s):

• Call of Duty United Offensive
• Radeonâ„¢ HD2400 series
• Windows Vista 32-bit Edition
• Windows Vista 64-bit Edition

Symptoms:
System hangs after a few minutes of running Call of Duty United Offensive with maximum in game settings i.e. screen resolution 2048×1536 and Catalyst Control Center 3D Settings set to Optimal Quality.

The information in this article applies to the following configuration(s):

• Rainbow Six Vegas
• Radeonâ„¢ HD2900 series
• Windows Vista 32-bit Edition
• Windows Vista 64-bit Edition

Symptoms:
Setting the display resolution to 1600X1200 and applying the in-game settings to high may result in corruption being noticed when using HDMI display device.