We wish to have two monitors with the same content including cursor,
but each display must be driven by different controllers(from different vendors).
Is there a way to configure XORG to support that?
We are using intel 855GME i810 and sisusbvga for Tritton USBtoVGA Adapter.

Xinerama "ON" enables same content(same picture), but Cursor is seen
only at one screen at the same time.

The application is similar to having a Desktop with two Video Adapters from different vendors, one of them drives local monitor and the second drives a projector. The content should be the same on both monitors.

Same resolution and color depth is acceptable.

GLXGEAR 3D(Software) works only on one monitor at a time

Do you have any idea or direction?