I want to enable dual-head display using the KDrive tinyx server - Xfbdev (X11R7.5 version). I am using Nvidia graphics card with two outputs connected to two samsung monitors. When i boot up the system with Fedora 11, the server is auto detecting both monitors and both the monitors are getting up and the screen is spanned among the two monitors. But When i run the Xfbdev server the display is coming on only one monitor. xrandr -q is giving the below output Screen 0: minimum 1024 x 768, current 1024 x 768, maximum 1024 x 768 default connected 1024x768+0+0 (normal left inverted right x axis y axis) 0mm x 0mm 1024x768 0.0* Why is Xrandr unable to detect the second monitor?? The Xfbdev has been compiled with XINERAMA and XRANDR extensions. Should i need to configure Xfbdev in order to detect the dual head configuration and show the display spanned among them??