System Freeze/Deadlock during Video/Audio Playback caused by Intel Smart Sound Technology-Core Ultra

[meteorlakefw]

Hello Intel Community,

I am writing to report a critical and persistent stability issue regarding the Intel Smart Sound Technology (SST) driver that I have been experiencing for nearly a year.

The Issue: Randomly during any audio or video playback (YouTube, Spotify, VLC, Media Player, across various browsers), the audio suddenly drops, the media player freezes, and the system eventually deadlocks or crashes the application. This happens unpredictably and interrupts my daily workflow, frequently causing me to lose unsaved development work.

The Root Cause & Workaround: I have isolated the issue completely. This is a severe conflict between the Intel SST driver and the onboard audio architecture. The only way to stabilize my system is to go into Device Manager -> System Devices, right-click the "Intel Smart Sound Technology Bus/OED", and manually force it to use the generic Microsoft "High Definition Audio Controller". Once I bypass the Intel SST driver, the freezes completely stop, and the system is 100% stable.

The Frustration (Why I need your help): Every time I use the Intel Driver & Support Assistant to perform a mandatory Arc Graphics or processor update, the installer automatically overwrites my workaround and reinstalls the faulty Intel Smart Sound Technology driver. If I don't immediately remember to restart my PC and manually revert the driver back to Microsoft's generic version, my system becomes a ticking time bomb for a freeze.

It is incredibly frustrating to dread every graphics update because I know it will break my system's audio stability.

System Info:

• Processor: Intel Core Ultra 7 155H
• Device Model: MSI Venture
• OS: Windows 11 25H2
• Last Intel® Arc™ Graphics Update: 32.0.101.8629

Could you please investigate this deadlock issue with the SST driver on the 155H architecture? Alternatively, is there a way to exclude the Intel SST driver from the Arc Graphics update package so my generic driver workaround remains intact?

Thank you.

[Roy_Intel]

Hello meteorlakefw,

Greetings from Intel Customer Support.

Thank you for bringing this matter to our attention and for the detailed explanation of the issue. I truly understand how frustrating it must be to experience system freezes and crashes, especially when it impacts your daily work and productivity. We appreciate the efforts you have already taken to isolate the root cause.

To further investigate and assist you effectively, we kindly request you to provide the following details:

• Kindly share the complete system report (Intel® SSU log) by following the instructions in the link below, ensuring that the Network tab is unchecked:https://www.intel.com/content/www/us/en/support/articles/000057926/memory-and-storage.html
• Exact driver version of Intel Smart Sound Technology (SST) currently installed
• BIOS version of your system
• Confirmation if the issue occurs with the latest OEM (MSI) audio drivers
• Any dump files or event logs captured during the crash (if available)

In the meantime, we recommend trying the following troubleshooting steps:

1. Install OEM Audio Drivers:

• Please install the audio and chipset drivers directly from MSI’s official support website for your device model, as OEM drivers are optimized for system compatibility.

1. Use Clean Driver Installation:

• Uninstall Intel SST-related drivers from Device Manager (including Bus/OED components)
• Restart the system
• Reinstall the recommended OEM driver package

1. Pause Intel Driver & Support Assistant Updates:

• Avoid automatic updates through Intel DSA temporarily to prevent overwriting your current stable configuration

1. Check Windows Updates:

• Ensure your system is fully updated, as some fixes may be delivered through Windows updates

Once we receive the requested details, we will analyze the issue further and work towards a suitable resolution or escalation if required.

We appreciate your patience and cooperation, and we are committed to assisting you in resolving this issue.

Best Regards

Roy,

Intel Customer Support Technician

[meteorlakefw]

Dear Roy,
Thank you for your prompt response and support.
To obtain the most accurate data for comparison, I captured two separate SSU logs; these are attached to this message:
microsoft-ssu.txt: Captured while the general Microsoft High-Definition Audio Controller I normally use was running.
intel-ssu.txt: This was captured after I temporarily reverted my system to the problematic Intel Smart Sound Technology (SST) driver.
After capturing the second log, I immediately switched back to the general Microsoft driver to prevent my system from freezing during my workflow.
Here are the details you requested:
Microsoft High Definition Version: 10.0.26100.8115
Intel SST Bus Version: 20.40.11112.10
OEM (MSI) Audio Driver Certification: Yes, I can confirm that the issue persists even with the latest official OEM drivers provided by MSI. The MSI driver package, by its nature, installs Intel SST Bus/OED components, which trigger the immediate freezing/hanging issue.
Dump Files/Event Logs: Since the system completely freezes (along with audio looping/cutting out) instead of triggering a traditional BSOD, Windows cannot generate a full minidump file.
Regarding troubleshooting steps: I’ve already tried clean installing both OEM drivers and generic Intel drivers. Neither resolves the freeze conflict between the SST driver and the 155H architecture (this is my assumption). Pausing Intel DSA updates is my current workaround, but this forces me to miss out on critical Arc Graphics optimizations. Indeed, the latest Arc version on MSI’s site is 32.0.101.8132, which is from 5 months ago (2025-12-10), and I was experiencing the same issues during that period. Additionally, the ISST driver is 20.40.11112.10, which is the same version from February of last year (2025-02-21). In other words, the same ISST version has been present in all Arc Graphics releases since I acquired the device last summer.
I hope these comparative logs provide clear visibility into the lockup situation. I look forward to your analysis.
Best regards.

[Roy_Intel]

Hello meteorlakefw,

Thank you for your quick response and for providing the requested details, including the SSU log. Your effort in sharing this information is greatly appreciated.

We would like to inform you that we are currently investigating the issue based on the information provided. We will review this in detail and get back to you with an update as soon as possible.

Thank you for your patience and cooperation.

Best regards,

Roy,

Intel Customer Support Technician

[meteorlakefw]

Hello.
Thank you for your response and your interest. It would be great if the issue could be resolved in future updates. So, we’ll wait and see for now.
Best regards.

[Roy_Intel]

Hello meteorlakefw,

Greetings from Intel Customer Support. I hope this message finds you well.

I understand how frustrating audio problems can be, and I'm here to help guide you through the resolution process.

If you're still uncertain why Intel Smart Sound Technology isn't functioning properly, please try the following steps in order:

1. Check for driver updates.
2. Enable SST in the audio settings.
3. Restart your computer.
4. Uninstall and reinstall the SST drivers.
5. Update your operating system.

If you've completed all the above troubleshooting steps and Intel Smart Sound Technology is still not working properly, this typically indicates a hardware-related issue with your system.

Contact Your System Manufacturer: You'll need to reach out to your Original Equipment Manufacturer (OEM) for further assistance, as they provide:

• Hardware diagnostics and support
• System-specific SST drivers and updates
• Warranty coverage for hardware defects
• Replacement parts if needed

For ongoing drivers and support for Intel® Smart Sound Technology on your system, we recommend referring back to your motherboard vendor or laptop manufacturer  (OEMs), as they can provide you with the most appropriate and system-specific support.

For reference, I've included Intel's official article addressing intermittent audio issues related to Intel Smart Sound Technology: Intermittent Audio Caused by Unidentified Issue in Intel Smart Sound Technology

https://www.intel.com/content/www/us/en/support/articles/000096037/processors.html

Thank you for choosing Intel support. I hope the troubleshooting steps and guidance provided will help resolve your Intel Smart Sound Technology issue.

Best regards,

Roy

Intel Customer Support Technician

[Roy_Intel]

Hello meteorlakefw,

Greetings from Intel Customer Support.

I am following up on the previous email regarding the Intel® Smart Sound Technology (SST) issue.

If the issue persists even after completing the recommended troubleshooting steps, we kindly advise you to contact your system manufacturer (OEMs) for further assistance. They can provide system-specific drivers, perform hardware diagnostics, and support you with warranty or replacement options if required.

For your reference, you may also revisit the Intel support article shared earlier for additional details:

https://www.intel.com/content/www/us/en/support/articles/000096037/processors.html

Please feel free to reach out if you need any further assistance from our side.

Best regards,

Roy

Intel Customer Support Technician

[Roy_Intel]

Hello meteorlakefw,

Greetings from Intel Customer Support. I hope you are doing well.

As we have not received a response from you, we will proceed with closing this inquiry for now. However, if you still require assistance or have any additional questions, please feel free to submit a new request, and we will be happy to assist you, as this thread will no longer be monitored.

Thank you for your understanding and cooperation.

Best regards,

Roy

Intel Customer Support Technician

[meteorlakefw]

Hello.
First of all, I wasn’t able to get back to you because I couldn’t check my messages due to work. I apologize for that, and I hope everything is going well for you too.

I tried these steps; I was going to test them for a few days and get back to you, but as far as I can tell, the issue persists. I haven’t experienced a crash yet, but there are audio glitches and a buzzing sound. When I start a sound, I hear a brief buzzing sound for a second, and then the video/audio plays. As I mentioned, I haven’t experienced a crash yet, but it seems like there’s a potential for one.

I posted on the MSI forum earlier, but even though I mentioned that I had tried these steps, they shared the topic threads discussed on the forum with me. I can create a new thread there, including the new details I’ve shared with you.

Thank you and best regards.