Radeon MergedFB Patch
This patch provides MergedFB functionality to dualhead Radeon hardware. It creates a single large
framebuffer with 2 viewports looking into it. Because of this 3D works on both heads. It is based
on the MergedFB support from the XFree86 Sis driver by Thomas Winishhofer and the MergedFB support
in the mga driver.
Click this link for more info.
Click here
for an updated Radeon man page describing the new options for MergedFB.