Intel Iris Xe Grpahics driver with wrong gamma [Update basic information]

[Hamish_Huang]

The model cannot output the 256 gray colors when I use the Type-C to HDMI or Displayport.
We update the driver to the last version. The error cannot be clear.
We test the 256 gray colors, there are three gray levels that have errors as below.

Image Input Gray = > Intel Graphics Gray output
Gray 16 = > Gray15
Gray 24 = > Gray23
Gray 254 = > Gray253
Could you please help check where the issue caused the problem?

NB Model: ASUS TUF Dash F15 FX516PM
Operation system: Windows 10 Pro
Configuration: Extended display mode
App: Use C# GDI to draw a rectangle to fill the extended display with a gray level (R=G=B)

Thanks.

[Steven_Intel]

Hello Hamish_Huang,

Thank you for posting on the Intel® communities.

I am sorry you are having issues with your Intel® Iris® Xe Graphics, I will be glad to help.

Could you please confirm if you have tried both the latest Intel graphics driver 31.0.101.4255 and also the latest driver (31.0.101.3413) provided by the Asus?

As well, please download the Intel® SSU https://downloadcenter.intel.com/download/25293/Intel-System-Support-Utility-for-Windows- 

Open the application and select "Everything", click on "Scan" to see the system and device information. By default, Intel® SSU will take you to the "Summary View". Click on the menu where it says "Summary" to change to "Detailed View". To save your scan, click on "Next", then "Save". Please attach the file to your reply.

Best regards,

Steven G.

Intel Customer Support Technician.

[Hamish_Huang]

Hello Steven,

   Could you please confirm if you have tried both the latest Intel graphics driver 31.0.101.4255 and also the latest driver (31.0.101.3413) provided by the Asus?

 => Yes, I have tried both drivers.

The SSU's report is attached.

I appreciate your help.

[Steven_Intel]

Many thanks for your reply.

I will research about this issue. As soon as I have an update, I will let you know.

Best regards,

Steven G.

Intel Customer Support Technician.

[Hamish_Huang]

Thank you for everything.

Hope to hear good news from you.

Best Regards,

Hamish

[Hamish_Huang]

Hi Steven,

    Is there any update now?

    I appreciate your help.

     Best Regards,

     Hamish

[Steven_Intel]

Hello Hamish_Huang,

In order to investigate further, please provide the following information:

• Where exactly are you seeing the wrong gamma color output?
• Have you tried using a straight connection (e.g. HDMI to HDMI, DP to DP, USB-C to USB-C, etc.). We do not recommend the use of adapters, dongles, converters, etc.
• Provide the model of the monitor/TV display you are currently using.
• Have you tried this with different monitors and check if the issue persists?
• Does the issue happen with a specific application?
• Provide screen captures showing the issue and steps to replicate it.

Look forward to hearing from you.

Best regards,

Steven G.

Intel Customer Support Technician.

[Hamish_Huang]

Hello Steven,

• Where exactly are you seeing the wrong gamma color output?

           We use TI's chip to convert the signal from HDMI to Parallel RGB.  We check the output from RGB on each channel. The output does not match our gray image.

• Have you tried using a straight connection (e.g. HDMI to HDMI, DP to DP, USB-C to USB-C, etc.). We do not recommend the use of adapters, dongles, converters, etc.

           The NB model has two connectors, one HDMI and the other one Type-C.

           HDMI uses an NVIDIA graphics card, it outputs correctly.

           USB-C uses the internal graphics card. 

            But, We don't have any display with USB-C to USB-C format. So, I have to convert USB-C to DP or HDMI.

• Provide the model of the monitor/TV display you are currently using.
• Have you tried this with different monitors and check if the issue persists?

            According to the first answer, we didn't test with a monitor or TV.

            We also check it on the monitor. We use color measurement equipment to check the luminance. The problem is the same.

• Does the issue happen with a specific application?

            No,

• Provide screen captures showing the issue and steps to replicate it.

          I provide an application in the attachment file. You can connect an external display and set the mode to an extended display.

         The first step is, Set the initial gray level and each gray level shows interval time.

         The second step is, to click the start button. 

          You can use color measurements or light measurements to check for changes in brightness

     Thank you

     Best Regard,

     Hamish

[Steven_Intel]

Many thanks for all the information provided.

I am going to keep working on this and as soon as I have an update, I will let you know.

Best regards,

Steven G.

Intel Customer Support Technician.

[Steven_Intel]

Hello Hamish_Huang,

Many thanks for your patience on this matter.

By any chance, could you please provide a video on how to use this app?

I need a step by step on how to replicate this issue and how to measure this and reference it.

As well, are you the app developers? I noticed that this app is not in English.

Best regards,

Steven G.

Intel Customer Support Technician.

[Hamish_Huang]

Hello Steven,

          I transfer all of the words to English. You can try it again.

          The manual will be provided later.

           I descript the steps here, you can reference it first.

           Step 1: Connect a monitor using Type-C to HDMI or DP.

           Step 2:  Select Start > Settings > System > Display.

           Step 2.1: In the Multiple displays section,  select Extended these displays

            Step 3: Open the HDMI Test tool.

            Step 4: Set the value, which you want to start with the gray level value and interval time.

                           Note: If you use the light sensor to check the issue.  You may set the value of interval time from 1 sec to 3 sec.

            Step 5: Click Start Test, and the program starts to show the different gray levels automatically.

            Step 6: Checking the different gray levels have the rise of the luminance.

            Luminance does not change, it says that the output is not correct.  

           Thank you for your help.

         Best Regards!!

         Hamish.

[Steven_Intel]

Many thanks for the information provided.

I will keep working on this, as soon as I have an update, I will get back to you.

Best regards,

Steven G.

Intel Customer Support Technician.

[DeividA_Intel]

Hello Hamish_Huang,

Thanks for your patience. I would like to let you know that I did not get the same issue when I tried to replicate it. At this point, I can recommend you the following:

1. Use a straight connection (no adapters). Adapters may cause unexpected issues.

2. Test a different monitor or TV.

3. Try to get in contact with the app developer for further information and assistance.

Regards,  

Deivid A. 

Intel Customer Support Technician 

[Hamish_Huang]

Dear Deivid A.

      Thank you for your help.

      The manufacturer has confirmed the issue.

      I think the manufacturer will report the issue to your team.

      Thank you.

      Hamish.

[Steven_Intel]

Thank you for letting us know the manufacturer confirmed the issue. As for now, I will proceed to close this thread.

Please keep in mind that this thread will no longer be monitored by Intel. 

Thank you for your understanding.  

Best regards,

Steven G.

Intel Customer Support Technician.