If you move a High-Definition Multimedia Interface (HDMI) cable from one HDMI output port to another HDMI output port on a computer that has multiple HDMI output ports, Windows Vista will not detect the change in HDMI cable connections. When this occurs, the default audio playback device in Windows Vista does not automatically shift to the next available audio playback device.

Additionally, Windows Vista may report that the audio playback device is working, even though the HDMI cable is not plugged into the HDMI port.

On a Windows Vista-based computer that has an Intel I/O Controller Hub 9 (ICH9) mobile chipset and a High-Definition Multimedia Interface (HDMI) adapter installed, you connect an HDMI audio device to the computer. After you disconnect the HDMI audio device, you open the Sound Playback dialog box. Then, you may notice one of the following problems:

• The Digital Output Device (HDMI) High Definition Audio Device entry still displays a Working status, and this device may be selected as the default HDMI device.
• The Digital Output Device (HDMI) High Definition Audio Device entry does not always appear in the Sound Playback dialog box after you disconnect the HDMI device. However, the HDMI device may appear after you close the Sound Playback dialog box and then open it again.
• The Digital Output Device (HDMI) High Definition Audio Device entry displays a Working status, even when an HDMI device has never been connected to the computer.

This problem may occur with some third-party drivers and also with the Microsoft in-box Digital Output Device (HDMI) High Definition Audio Device drivers.

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.

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

• ATI Radeonâ„¢ HD2600 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:
Overscan / Underscan slider and checkbox is enabled after installing the Catalyst Control center and rebooting with HDMI display connected.

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

• Radeonâ„¢ HD 2600 series
• Windows Vista 32bit Edition
• Windows Vista 64bit Edition

Symptoms:
HDMI audio stutter is heard when playing MPEG clip at certain resolutions on specific HDMI device

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

• Radeonâ„¢ HD2600 series
• Windows Vista 32-bit Edition
• Windows Vista 64-bit Edition

Symptoms:
HDMI audio stutter may be heard when playing MPEG clip at certain resolutions on specific HDMI device

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

• Radeon® X1900 series
• Radeon® X1800 series
• Radeon® X1600 series
• Radeon® X1300 series
• Windows Vista 32bit
• Windows Vista 64bit
• Windows XP Professional
• Windows XP Home Edition
• Windows XP Media Center Edition
• Windows XP Professional x64 Edition
• Windows 2000 Professional
• SONY KLV-S32A10 LCD TV
• PRIMA LC32U5 LCD TV

Symptoms:
With above mentioned LCD TVs the resolution 1366×768 is not available through DVI or HDMI. However through VGA connection the resolution is available.

Other LCD TVs and Radeon cards might be affected.

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

• Radeon® series
• Windows Vista 32bit
• Windows Vista 64bit
• Windows XP Professional
• Windows XP Home Edition
• Windows XP Media Center Edition
• Windows XP Professional x64 Edition
• Windows 2000 Professional
• SHARP L26GA4E LCD TV

Symptoms:
With above mentioned LCD TV the resolution 1360×768/1366×768 is not available through DVI or HDMI, whereas Sharp indicated 1366×768 as native resolution. Through VGA connection the resolution is available. The EDID information from SHARP does not include these resolutions.

Other graphics cards might be affected.

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

• Catalyst Display Driver 7.1 Vista and higher
• Radeonâ„¢ X1950 series
• Radeonâ„¢ X1900 series
• Radeonâ„¢ X1800 series
• Radeonâ„¢ X1650 series
• Radeonâ„¢ X1600 series
• Radeonâ„¢ X1550 series
• Radeonâ„¢ X1300 series
• Radeonâ„¢ X1050 series
• Radeonâ„¢ X850 series
• Radeonâ„¢ X800 series
• Radeonâ„¢ X700 series
• Radeonâ„¢ X600 series
• Radeonâ„¢ X550 series
• Radeonâ„¢ X300 series
• Radeonâ„¢ 9800 series
• Radeonâ„¢ 9700 series
• Radeonâ„¢ 9650 series
• Radeonâ„¢ 9600 series
• Radeonâ„¢ 9550 series
• Radeonâ„¢ 9500 series
• Windows Vista 32bit
• Windows Vista 64bit

Symptoms:
There is no signal available after switching back from input source “TV” to “HDMI” on LCD TVs. The signal will be available if the DVI-HDMI cable is hotplugged (unplug and replug while the system is running).

Consider the following scenario. On a computer that is running Windows Vista, you open the Sound item in Control Panel. Then, you open the Properties dialog box for an installed device that uses one of the following interface formats:

• High-Definition Multimedia Interface (HDMI)
• Sony/Philips Digital Interface (S/PDIF)

However, when you click the Supported Formats tab in the Properties dialog box for the device, you notice that all the check boxes are unexpectedly selected. For example, the following check boxes are selected:

• DTS Audio
• Dolby Digital
• Microsoft WMA Audio
• 44.1 KHz
• 48.0 KHz
• 88.2 KHz
• 96.0 KHz
• 176.4 KHz
• 192.0 KHz

You experience this problem even though the following conditions are true:

• You did not select all the check boxes.
• The device does not support all these selected formats.

When this problem occurs, you may not receive sound from the device.