Thank you very much for your valuable inputs Mr Alex and Adam. I am still a bit confused about where exactly this dual-head implementation exists and how to make it up using tinyx server. As per your replies i understand that in order to make dual-head working using an Xserver it should have one of the below features - XRandR extension with dual-head support or - graphics driver associated with the X server (fbdev incase of Xfbdev server) should implement the logic of mapping the framebuffer on to two monitors. As fbdev being a generic driver written for linux framebuffer device it does not have dual head implemented as all cards may not have hardware configuration required to support dual-head. Am i right?? Actually my objective is to run a tinyx server (preferably Xfbdev as it succesfully runs on my target) on an e-book target and enable dual-head display on it. So In order to acheive this should i alter the fbdev driver (in Xfbdev) to map it on to two different displays?? Or a is this the job of RnadR/XINERAMA extensions?? Or Tinyx does not support dual-head at all?? I mean Kdrive itself does not support dual-head?? i am mentioning some of the observations i made during my attmpts: I am using the latest Xfbdev from X11R7.5 release and its having Xrandr version 1.3. I think this is same as the Xrandr running on fedora 11. Does this Xrandr 1.3 has dual-head support?? But usinf this also giving the same ouput as > 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* But on fedora Xrandr -q clearly giving the output mentioning the VGA1, VGA2 ouptupts and their current configuration. I have tried to run Xnvidia server present in KDrive (X11R7.4 release) and the Xrandr version present in it is 1.2. The graphics card is Nvidia Quadro fx 1700. In this case also the server is showing display on one monitor only. I guess its because the driver implemented in Xnvidia is out of date and it could not properly configure some advanced graphics card like nvidia Quadro fx 1700. is it so?? your inputs are highly valuable as not much information is available on net regarding dual-head support in tinyX. <div class="gmail_quote">On Wed, Dec 16, 2009 at 8:35 PM, Alex Deucher <<a href="mailto:alexdeucher@gmail.com">alexdeucher@gmail.com</a>> wrote: <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><div><div></div><div class="h5">On Wed, Dec 16, 2009 at 8:44 AM, prudhvi raj <<a href="mailto:prudhviraj.v@gmail.com">prudhviraj.v@gmail.com</a>> wrote: > 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?? </div></div>fbdev doesn't support dualhead. You'll need to use a native driver for your GPU. Alex </blockquote></div>