Custom gamma settings are lost on a Windows Vista-based computer, on a Windows Vista Service Pack 1-based computer, or on a Windows Server 2008-based computer

You use multiple monitors on a Windows Vista-based computer, on a Windows Vista Service Pack 1-based computer, or on a Windows Server 2008-based computer. Then, you use calibration tools or other programs to manipulate custom gamma settings. In this case, custom gamma settings may be lost after the fade-in effect is executed.

Note The fade-in effect is executed in the following scenarios:

• Lock and unlock the computer.
• Resume the computer from sleep.
• Resume the computer from hibernate.

To resolve this issue, install the MS08-025 security update. For more information about the MS08-025 security update, click the following article number to view the article in the Microsoft Knowledge Base: