1 Reply Latest reply on Aug 18, 2015 4:39 AM by miguelmg

    Intel HD Graphics 4400 flicking problem in Windows 7 Enterprise

    miguelmg

      Hi everyone,

      I have got a HP laptop (EliteBook Folio 1040) configured with Windows 7 Enterprise SP1 64bits and having a Intel HD Graphics 4400.

      No matter what resolution I select that I see a continuous flicking on the image, as if the refresh rate was very low in spite of I selected the maximum refresh rate supported by this graphic card (60hz). I tested it with resolutions 1366x768, 1600x900 and 1280x720.

       

      These are all the tests I have done:

      a. Last version Driver 10.18.14.4251 (win64_153623), all resolutions, windows 7 -> flicking issue

      b. Previous version Driver 10.18.14.4139,  all resolutions, windows 7 -> flicking issue

      c. Intel driver provided by laptop manufacturer (HP sp71151), all resolutions, windows 7 ->  flicking issue

      d. I installed Ubuntu 14.04 in any resolution -> no flicking issue, it works fine.

      e. I installed the generic driver standard VGA of Windows 7 -> no flicking issue, it works fine. Although this generic driver is not useful for me as I can not extend desktop to external monitor and I can not select the resolution 1368x768. Only 1600x900 and 1024x768 resolution are allowed with that driver.

       

      Any idea how to solve it.

       

      Many thanks.

      Miguelmg

        • 1. Re: Intel HD Graphics 4400 flicking problem in Windows 7 Enterprise
          miguelmg

          Hi everyone,

          Finally I have found out the cause of flicking. The Intel driver is set in the Windows 7 energy plan to save energy configuring a bad screen refresh rate when the laptop is using the battery.

           

          I configured in the Windows 7 energy plan the options of Intel Graphics Settings to 'Maximum Performance' and now there is not flicking no matter if it uses the laptop battery o it is plugged.

           

          Best regards.