Consider the following scenario:

• You have a Windows Vista-based computer that has Windows Media Center TV Pack installed.
• The computer has multiple graphics adapters and has multiple monitors connected.
• You play a DVD or a TV program in Windows Media Center.
• You start Windows Media Center in a secondary monitor, or you move it to a secondary monitor while the video is playing.

In this scenario, the video that is displayed on the second monitor may appear garbled. This problem occurs only on computers that have certain graphics hardware installed.

Consider the following scenario:

• You connect more than one monitor on a Windows Vista-based or Windows Server 2008-based computer.
• On a secondary monitor, you put a Windows Explorer window into full-screen mode by pressing the F11 key.

In this scenario, when you move the pointer to the top of the screen, the Windows Explorer navigation bar does not appear.

Notes:

• The navigation bar appears if the Windows Explorer window is maximized instead of in full-screen mode.
• The navigation bar appears if you switch out of full-screen mode by pressing the F11 key.

Consider the following scenario.

• You are running a Windows Vista-based computer that has more than one hard disk.
• Windows Vista is installed on the primary hard disk.
• There is a partition on the secondary hard disk.
• You disable the secondary hard disk.

In this scenario, the computer must be restarted. This occurs even when no files or folders are open on the secondary hard disk when you disable it.

Consider the following scenarios:

• An additional monitor is connected to a Windows Vista-based desktop computer. The additional monitor is designated as the primary display (the main monitor). The computer goes into hibernation or goes to sleep. This additional monitor is disconnected. The computer resumes from sleep or from hibernation.
• An external monitor is connected to a portable Windows Vista-based computer. The additional monitor is designated as the primary display (the main monitor). The built-in screen is designated as the secondary display. The computer goes into hibernation or goes to sleep. This external monitor is disconnected. The computer resumes from sleep or from hibernation.

In these scenarios, you cannot see the logon screen. Therefore, you cannot log on to the computer.

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

• Catalyst Display Center
• Radeonâ„¢ X1650 series
• Radeonâ„¢ X1600 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:
Catalyst Control Center: Connecting a secondary display device results in the display device failing to be selected in all of the setting pages of the Catalyst Control Center where the Graphics Adapter drop down menu exists

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

• WinDVD
• PowerDVD
• Catalyst Control Centerâ„¢
• Radeonâ„¢ X 1950 series
• Radeonâ„¢ X 1900 series
• Windows Vista 32-bit Edition
• Windows Vista 64-bit Edition

Symptoms:
Connecting a secondary display device and enabling extended desktop mode results in the Catalyst Control Centerâ„¢->Avivo Basic aspect options failing to be applied when watching a DVD using either WinDVD or PowerDVD on the secondary display device

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

• Radeonâ„¢ HD2400 series
• Windows Vista 32-bit Edition
• Windows Vista 64-bit Edition

Symptoms:
Dragging player window to secondary display while playing back HD content and moving it back to primary may result in blank player window.

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

• Catalyst Display Driver 7.1
• Radeon® X1900 series
• Radeon® X1800 series
• Radeon® X1600 series
• Radeon® X1300 series
• Radeon® X850 series
• Radeon® X800 series
• Radeon® X700 series
• Radeon® X600 series
• Radeon® X550 series
• Radeon® X300 series
• Radeon® 9800 series
• Radeon® 9700 series
• Radeon® 9650/9600 series
• Radeon® 9550/9500 series
• Windows Vista 32bit
• Windows Vista 64bit

Symptoms:
When outputting to a secondary display such as a TV, HDTV or monitor, the theater mode settings for clone mode do not function.