User`s guide

16
Display Control Tab
Force Single Display Operation, when using a dual display
video card, causes all display modes to appear as a single list of
supported resolutions in the Apple
®
Displays Properties.
Only one display is on when this feature is enabled. The default
setting is Disabled.
Enable GTF Modes for CRT provides a list of all available
modes for your monitor based on the Generalized Timing
Formula standard. This feature is enabled by default.
Enable ATI “Valid” and “Safe” flags in mode list, when
enabled, allows the video card to determine which video modes
are valid and safe.
Enable Hot Plug Detection allows the operating system to
automatically detect when a display is connected to the
computer and allows the use of “Detect Displays” button for
other devices. This removes the need to restart the computer
after attaching a secondary display.
Default button undoes all changes and sets everything to the
factory default settings.
Apply button causes all the selected options to be enabled at
one time.