2 Replies Latest reply on Aug 8, 2013 10:51 AM by Binary0

    Help with HDMI Port (HD4000)


      I have a PC (Gigabyte GA-Z77n motherboard with an i3 3225 cpu) and having trouble getting the HDMI ports to work correctly.  When just the HDMI port is connected directly to a TV, in this case a Sony Bravia, there is no signal. If I also connect a cable from the DVI port on the PC to the VGA input on the TV the HDMI port then goes active and I get a signal on the TV. 


      I've verified that it's not the TV or cable by using another PC with the same HDMI cable and it works fine just by connecting one HDMI cable. I can't find anything in the bios controlling the ports and nothing in the Intel Graphics Manager.


      I've tried -

      • Uninstalled the Intel graphics driver to the generic Microsoft vga driver
      • Reinstalled with the latest version of the HD4000 driver.
      • Re-powering & resetting the TV


      Can anyone think of anything I've missed or any ideas?



        • 1. Re: Help with HDMI Port (HD4000)

          Hi Binary0,


          Can you provide a copy of your Dxdiag please?  (Start -> Run -> dxdiag -> Save All Information).  Additionally, can you provide a copy of your Intel® Graphics report?  (Ctrl + Alt + F12 to open Graphics control panel -> Options -> Information Center -> Save).  Just attach those here and we can take a look.


          Do you have access to another display?  You can connect both the TV and the other display to your system, and then check the Intel® Graphics Control Panel and see if it is recognizing both monitors as being connected there.


          If the system is not recognizing it as connected, you may have a faulty HDMI port on the motherboard.




          • 2. Re: Help with HDMI Port (HD4000)

            After doing some more testing it turns out that when the DVI port is connected and it goes into the dual display mode the refresh rate for the HDMI/TV display was correctly being set to 24p. When the DVI port is disconnected and it is in the single display mode the refresh rate was being set to 60p for the TV which it couldn't sync to. After manually setting the refresh rate to 24p in single display mode it is working.


            Thank you for your response.