HDMI Embedded Audio Questions

PCs, Processors & Graphics Graphics & Gaming
1

We are a manufacturer of video scaler with built-in HDMI 2.0 Rx chipset.
Our affiliated company reported the following, so I will ask three questions including what I investigated.

For HDMI output with audio from NUC pc, if user do the play → stop → play action,
Audio recovery takes up to 6 seconds.

For example, it means that video playback and pause are repeatedly performed every 10 seconds without changing the type of clip on YouTube.

Analysis of the problem found that sck and ws signal of I2S audio disappeared.
The problem only occurred on Intel iRIS graphics models.

So when we tested the reproduction with the specifications described below, it took up to 1 second to recover the audio.

---------------------------------------------

11th Gen Intel i5-1155G7 2.5Gh

Win10 Pro(21H1)
LG Notebook : Gram 15ZD95P-GX56K

----------------------------------------------

In conclusion, the result of extracting and analyzing audio data from our HDMI 2.0 Rx is that
(*) If there is no audio data stream of about 5 seconds, system artificially blocks audio sck and WS (=LRCLK) output.
(**) It appears that there is a routine to detect when the audio menu is retrieved from the window control panel.

Q1)

Is this a behavior intended by Intel?
Or is the procedure in MS Windows-10 controlling HDMI embedded audio?

Q2)

Regarding HDMI embedded audio, are there any updates to the latest bios or drivers?

Q3)

Is it related to the previous QnA of other users below?

https://community.intel.com/t5/Graphics/HDMI-audio-stream-keeps-dropping-when-inactive/m-p/447426

2

Hello DHYang,

Thank you for posting on the Intel® communities. I am sorry to know that you are having issues with your Intel® Iris® Xe Graphics eligible.

In order to better assist you, please provide the following:

1. Can you provide more details about the issue?

2. can you provide a video where we can see the issue?

3. Can you provide specific steps to replicate the issue?

Best regards,

Deivid A.

Intel Customer Support Technician

3

1. Can you provide more details about the issue?

Please refer to the attached pdf.

2. can you provide a video where we can see the issue?

Please refer to the attached mp4.

It is a file generated by a customer company in Taiwan,

and if you look at the 6-9 second section, there is a delay of about 3~4 seconds.

When I tested(replicate) it, the delay was up to 1 second.

Please note that there may be more reasons for the customer’s own creation.

3. Can you provide specific steps to replicate the issue?

Please refer to the attached pdf.

It was reported by  ‘NUC11PAH’ or ‘Redmi Book Pro15’ device.

I am reporting the expected cause by testing it with LG laptop which has something in common.

HDMI embeded audio problem.pdf (184 KB)

4

Hello DHYang,

Thanks for the additional information. Before we continue further, I would like to confirm the following:

1. Does the same issue happens on youtube videos? Or is it only present on Windows media?

2. Is this issue recent? Or is it out of the box?

3. Please try a clean install of the Intel drivers:

Regards,

Deivid A.

Intel Customer Support Technician

5

1. Does the same issue happens on youtube videos? Or is it only present on Windows media?

My case appeared when I tested it on YouTube.
   The same is expected for our customers.

Also, I told our client to test the corresponding matter.

2. Is this issue recent? Or is it out of the box?

Yes. recent.

Yes. OOTB.  Test after initialize the laptop  (win-10)

3. Please try a clean install of the Intel drivers: I try it. but equal.

31.0.101.1999   --> 31.0.101.3790   (old driver delete → install)

Also, I contacted a Taiwanese customer to test the latest driver after installing it.

I’ll report when I get the results.

6

Hello DHYang,

Thanks for the confirmation. I will proceed with the investigation once you confirm if the issue persists with the latest driver.

If the issue persists with the latest Intel drivers, please provide the Intel® System Support Utility (Intel® SSU) report.

  • Download the Intel® SSU and save the application on your computer: https://www.intel.com/content/www/us/en/download/18377/intel-system-support-utility-for-windows.html
  • Open the application, check the “Everything” checkbox, and click “Scan” to see the system and device information. The Intel® SSU defaults to the “Summary View” on the output screen following the scan. Click the menu where it says “Summary” to change to “Detailed View”.
  • To save your scan, click Next and click Save.

Regards,

Deivid A.

Intel Customer Support Technician

7

1. The pc used to reproduce the problem phenomenon is not my equipment, so I can’t test it right away.
2. Today is a holiday in Korea. You have to wait 2-3 days.

It hasn’t been solved yet 
I’ll upload it after scanning

8

Scan file included. Thank you

pc_info_for_audioproblem.txt (128 KB)

9

Hello DHYang,

Thanks for the update. In this case, based on your report you are running Windows 10 version 19043 and the latest is 22H2 -10.0.19045.2251.

Try to update your Windows version to the latest and let me know if the issue persisted.

Regards,

Deivid A.

Intel Customer Support Technician

10

1. After the Windows version update, the problem has disappeared from the laptop we have.

2. I have asked the customer to check if it is improved in 22H2. I’ll leave a message when the result comes out.
The client company noticed me that there was a problem under the conditions below.

#a. Customer’s windows version
   Redmi Book Pro 15: Windows 10 Home China*(21H2)
   NUC: Windows 10 Enterprise LTSC*(1809)

#b. Intel(R) lris(R) Xe Graphics. (Don’t care)
   Redmi Book Pro 15: 27.20.100.8935 or new version
   NUC: 31.0.101.3616 or new version

11

Hello DHYang,

I am glad to know that the issue has disappeared from your laptop with the latest Windows version. I will be waiting for the update related to your customer’s units.

Thanks for your help.

Regards,

Deivid A.

Intel Customer Support Technician

12

On the issue we are discussing, normal window is OK after update of 22H2 version.

Unfortunately, our client is using the LTSC version of WINDOWS10, and the latest version is 21H2.The client’s LTSC version is the latest version, and I can’t solve the problem myself.
How can we solve or avoid problems in this situation? The problem is caused by lris(R) Xe Graphics HDMI embedded audio(such as Nuc PC), so can Intel give a solution?
This includes Intel communicating directly with Microsoft to provide patches (such as prefixes). Should we get Microsoft’s support directly because it’s a Windows problem?
I don’t think MS will respond well if I request it…(T.T)

I’m just an employee of a small company… But Intel’s business is huge.

If we have to contact MS directly, please let us know the window where we can communicate. I have attached the data of the client company’s SSU save.

NUC-Enterprise LTSC(21H2).txt (138 KB)

13

Hello DHYang,

Thanks for the confirmation. In this, Windows 10 Enterprise LTSC is an operating system mainly for companies and Microsoft is the one that provides the driver, updates, and support for this operating system since it runs some customized drivers.

Your client must go with Microsoft to confirm if there is a new version/build of Windows 10 Enterprise LTSC as well as for installation instructions.

You can get in contact with Microsoft using the following link: https://support.microsoft.com/en-us

Regards,

Deivid A.

Intel Customer Support Technician