2 Replies Latest reply on Feb 10, 2016 9:54 AM by mikec_intel

    Why Is the Brightness Control Asymmetrical?

    Johny Why

      hi

       

      In HD Graphics Control Panel > Color > Basic > All Colors > Brightness:

       

      When you change brightness, the colors are not changed equally-- the tint of my LCD screen changes. As i turn down the brightness, the screen becomes bluish. You can see the asymmetry in the Sample 1 Preview:

      Screenshot (12).png

       

      Why?

       

      Is it possible to turn down the brightness on all colors equally?

       

      Here are my display stats:

       

      Intel(R) HD Graphics

       

      Report Date: Friday, February 5, 2016

      Report Time [hh:mm:ss]: 8:21:35 AM

      Driver Version: 10.18.10.4276

      Operating System: Windows* 10 Pro Insider Preview (10.0.10586)

      Default Language: English (United States)

      Installed DirectX* Version: 12.0

      Supported DirectX* Version: 11.0

      Shader Version: 5.0

      OpenGL* Version: 4.0

      OpenCL* Version: 1.2

      Physical Memory: 1939 MB

      Processor: Intel(R) Celeron(R) CPU  N2840  @ 2.16GHz

      Processor Speed: 2167 MHz

      Vendor ID: 8086

      Device ID: 0F31

      Device Revision: 0E

       

      * Processor Graphics Information *

       

      Processor Graphics in Use: Intel(R) HD Graphics

      Video BIOS: 1014.0

      Current Resolution: 1366 x 768

       

      * Devices connected to the Graphics Accelerator *

       

      Active Displays: 1

       

      * Built-in Display *

       

      Display Type: Digital

      Serial Number: SEC3859

      DDC2 Protocol: Supported

      Gamma: 2.2

      Connector Type: Embedded DisplayPort

      Device Type: Built-in Display

       

      Maximum Image Size

      Horizontal Size: 11.42 inches

      Vertical Size: 6.3 inches

       

      Supported Modes

      1366 x 768 (60p Hz)

      1366 x 768 (40p Hz)

       

      Raw EDID:

      00 FF FF FF FF FF FF 00 4C A3 59 38 00 00 00 00

      00 16 01 04 90 1D 10 78 0A 87 F5 94 57 4F 8C 27

      27 50 54 00 00 00 01 01 01 01 01 01 01 01 01 01

      01 01 01 01 01 01 CE 1D 56 F0 50 00 18 30 40 30

      25 00 25 A5 10 00 00 19 D8 13 56 F0 50 00 18 30

      40 30 25 00 25 A5 10 00 00 19 00 00 00 00 00 00

      00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 02

      00 0C 42 F2 0C 4C 64 15 10 1B 69 00 00 00 00 9F

       

      * Other names and brands are the property of their respective owners.

       

      thx!

        • 1. Re: Why Is the Brightness Control Asymmetrical?
          mikec_intel

          Hi Johny Why,

           

          I noted you have an Intel® Celeron™ N2840 with Intel® HD Graphics. The support for Windows® 10 is limited. The drivers are going to be distributed by Windows® 10 update only.

           

          If you are getting issues with the brightness, I suggest you to uninstall and delete the current driver from device manager, restart the NUC and run Windows® 10 update.

           

          In regards your question, “Why Is the Brightness Control Asymmetrical? “ I am going to escalate it with our graphics engineer. I will try to get an answer soon.

           

          Regards,
          Mike C

          • 2. Re: Why Is the Brightness Control Asymmetrical?
            mikec_intel

            Hi Johny Why,

             

            The Brightness Control can work in both “Symmetrical” and “Asymmetrical” ways.

             

            The key here is the following control:

            Under “Color Enhancement”, by default “All Colors” is selected.

             

            If you move the controls below, specifically the Brightness, the change will be done “Symmetrical” to all the colors. Note that the “Preview” example to the right should be a straight line.

            However, if instead of using “All colors” you select either Red, Green or Blue, and then change the Brightness, the change will be done “Asymmetrical”.

            Please let me know if this answers your question.

             

            Regards,
            Mike C