1 Reply Latest reply on Mar 5, 2013 10:31 AM by Diego_Intel

    Intel HD Graphics Family does not detect Monitor 2 on VGA Splitter.


      I have a new PowerSpec 64bit Win7 machine.  Intel dual G645 with the Intel HD Graphics Family chipset for display adapters.  I have a VGA splitter that is working to Clone the desktop on both monitors but the Windows display properties only detects one monitor and so does the Intel HD Graphics Control panel.  I cannot get it to detect Monitor 2 and apply the Extended Desktop setting. 


      I have updated the driver to, checked connections, tightened and swapped connections, new cables, and reboots up the wazoo.  But I cannot get Monitor 2 to show in the display settings. 


      Any suggestions? 


      Also, I've used this splitter on other machines, including older PowerSpecs and never had this problem. 

        • 1. Re: Intel HD Graphics Family does not detect Monitor 2 on VGA Splitter.



          Intel® HD Graphics and other similar controllers from Intel, provide support for dual independent displays that can be used as Clone mode or Extended desktop. This is done using two separate video pipelines to the video controller that are provided through two separate video ports in the system.


          In this case, you are just using one video port, the VGA interface. Using the splitter you are just dividing the signal that comes from that same port, however that does not provide a separate pipeline for extended or clone desktop.


          In fact, the system will only detect one device connected to a single port, like a point to point connection, and as the driver only detects one monitor the system does not give you the option to enable extended desktop. As a matter of fact, the video driver is not actually working in clone mode either, you get video on the second display as a result of splitting the output signal, however this is not being done by the video controller.