How to disable all graphics card manipulations of RGB values

[KMell2]

I need to tightly control the RGB values going out of the Intel NUC. Putting a custom FPGA HDMI inline tester between the NUC and my display, I can see the graphics card isn't always putting out the RGB value I send. The Intel Graphics Control panel is modifying things, it appears. Tested this by modifying brightness and contrast sliders in the Intel Graphics control pane. How can I turn off all corrections being done by any software so that I get the exact RGB output that I send to the graphics card? I have a NUCi3DNB.

Thanks,

Kevin

[Oscar_A_Intel1]

Hello KMell2, Thank you for posting on the Intel Community. I see you would like to control the RGB values using the custom FPGA HDMI inline. Please allow us some time to perform our research. I will be posting back as soon as I have an outcome. Regards, Oscar A. Intel Customer Support Technician Under Contract to Intel Corporation

[KMell2]

No, I don't want to control using an FPGA. That's how I measure to values coming out of the HDMI port.

I want the Intel NUC to output RGB values directly as I send them and not modify them within the driver or any other software. For example if I send 64,64,64 the graphics card can output 64,63,63 because of color, brightness, or contrast tweaks the Intel graphics control panel or driver is forcing.

[Oscar_A_Intel1]

Hello KMell2, Thank you for clarifying the information. I'll be posting back the outcome after performing our investigation about your inquiry. Best regards, Oscar A. Intel Customer Support Technician Under Contract to Intel Corporation

[Ronny_G_Intel]

Hello KMell2, This question is out of the scope of support that we regularly provide to our customers, I would encourage other community members to help out with this issue and/or visit our Intel Developer Zone: https://software.intel.com/en-us/forum I would probably begin with not using the Intel Graphics Driver and run the FPGA HDMI inline software only with the Windows basic driver or I would look for an Operating System that allows driver modification such as Linux. If you are using Linux, I would recommend Github repositories for new projects or https://01.org/ I hope this helps, Ronny G

[KMell2]

Don't understand how this is out of scope. Ignore the FPGA inline tester. Has nothing to do with the Intel NUC modifying RGB values.

It's an Intel integrated graphics card in an Intel NUC. Can't be more in scope than this.

[Chris_V_Intel]

PM Sent.

[Ronny_G_Intel]

Hi KMell2, The reason I said that this request is out of the scope of our support is based on the fact that you need to tightly control the RGB values going out of the Intel NUC, We dont have any Intel tool available to the public capable of doing that so I am guessing that you are not only using a custom FPGA HDMI inline tester between the NUC and the display but you are also probably using a third party application and we dont have any of that to duplicate and investigate what you are seeing. If you are doing some kind of programming or developing a product, I would recommend that you go to our Developer Zone. If I am totally wrong and you are having an issue with the NUC and/or Graphics Driver not working as expected I apologize and please provide me with more details to try to help you with this issue. To start with I would need the following: 1- Detailed description of the issue, if this is a graphics related issue, please include screenshots or pictures. 2- NUC BIOS version and Graphics driver version 3- Operating System 4- Display brand and model and any specific setting not working on the display 5- Graphics configuration e.g. Resolution, Chroma sampling, anything you are specifically setting up 6- DxDiag report would help 7- or Intel SSU: https://downloadcenter.intel.com/download/25293/Intel-System-Support-Utility-for-Windows- Thanks, Ronny G