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Note: DHA (Direct Hardware Access) is not supported in a window that spans multiple screens. This means, for example, that while graphics is supported to a window spanning two or more screens, accelerated graphics is not. "Spanning," in this context, includes a window that is two or more screens in size, as well as a window that is partially on one screen and partially on another (even though it would fit on a single screen if it were moved).
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SLS can also be enabled via the /etc/X11/X*screens file via the syntax:
SingleLogicalScreen n m /dev/crt0 ... /dev/crtk
where:
n = the number of "rows" in the physical configuration
m = the number of "columns" in the physical configuration, and the product of nXm is less than or equal to four.
For example, to create a logical screen that is one monitor tall by two monitors wide, the following syntax would be used:
SingleLogicalScreen 1 2 /dev/crt0 /dev/crt1
Whereas for a logical screen that is two monitors tall by one monitor wide, the syntax is:
SingleLogicalScreen 2 1 /dev/crt0 /dev/crt1
3D Acceleration and Single Logical ScreenCurrently, SLS does not take advantage of 3D acceleration (e.g.
Be sure that HP VUE/CDE has not been modified to take advantage of the Single Logical Screen capability. When presenting information on your display, HP VUE may split a window across physical screens. Examples include:
•The login screen.
•The Front Panel.
•Window move and resize boxes.
•The screen lock dialog.
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