Lunar Lake thunderbolt 4 compatibility issues

[James0G]

So I have been troubleshooting this for the past week, I am using the ASUS Zenbook S 14, which has an Ultra 7 268V processor and thunderbolt 4.

But if I plug in any real thunderbolt device like a eGPU dock, Intel PCI Express upstream port won't start and laptop will loses trackpad, wifi, audio. After searching the internet, It looks like this issues affect other laptop with lunar lake.

Is there any on can help ?

[Earl_Intel]

Hi James0G,

Thank you for posting in the communities!

I'm sorry to hear that you're encountering problems with your system. In order to assist you more effectively and find the best solution, could you kindly provide the following details?

• What is the make and model of the eGPU dock that you're using?
• Is the eGPU working fine before?
• Have you check if your eGPU is compatible with your laptop?
• Did you already contacted ASUS regarding to this issue?

Kindly run this on your system so that I can also gauge the following peripherals and the driver versions that you have:

Intel® System Support Utility for Windows*

Once finished downloading, open the tool, click on scan (leave the default items checked), click next, then save the system information to a .txt file. Please provide us the .txt file.

Best regards,

Earl E.

Intel Customer Support Technician

[James0G]

Hi Earl,

The eGPU dock is a Mantiz Venus(TBX-550CA) which should use the Thunderbolt 3 controller DSL6540 or JHL6540, and the eGPU is an AMD RX6600.
I've frequently used this eGPU dock with my old laptop without any issues.  Old laptop is a Lenovo Yoga 14c with an Intel Core i7-1065G7 CPU.
On Lunar Lake, I tried using an AMD RX6600 and an Intel B580 as eGPU, and neither worked.

[Earl_Intel]

Hi JamesOG,

Thank you for sharing this information, no worries, I will further check on this internally and provide an update on this thread as soon as possible.

Best regards,

Earl E.

Intel Customer Support Technician

[Earl_Intel]

Hi JamesOG,

I'm still currently investigating on the issue; can you clarify a few details:

• Can you confirm if the issues happen while the laptop is plugged in or not?
• What is the current power plan implemented on the affected laptops?
• You mention earlier that the eGPU was working fine with your older laptop, may I know if you tested other devices and check if the issue persists?

This will greatly help in our investigation.

Best regards,

Earl E.

Intel Customer Support Technician

[James0G]

Hi Earl,

• Yes, these issues occur whether the laptop is plugged in or not.
• The laptop is currently running on balanced power plan.
• I still own my older laptop and the eGPU still works fine on it. I also lent the eGPU dock to my friend for testing a few years ago and they also had no problems, I'm not sure about the model of my friend's laptop, just remember that it has a CPU a little older than Ick Lake.

[Marcus_St]

I am having the exact same issue.

When connecting my TB eGPU (Zotac Ampbox Mini, NVidia 1660 Super) the device starts up for about 5-10 seconds, then I hear the "disconnect" sound and lose trackpad, wifi, bluetooth and touchscreen (don't know about audio). Only the keyboard works but restarting windows fails (hangs forever).

The laptop is a Dell XPS13 9350 with an Core Ultra 7 258V. Windows, BIOS and System drivers are up to date.

In rare cases (like every 30th try) I get the TB accessory installed and connected for about 5min but then the whole system crashes (hard turn off, no bluescreen just everything off) or the device gets disconnected.

If I boot up with the TB eGPU connected, the same happens during boot. The GPU spins up for about 5-10 seconds and then immediately stops. The device is not listed in the device manager after bootup. If I select "search for new hardware" I get the same result as when hot-plugging the eGPU in.

I've also tested on a Zenbook S14 with Lunar Lake from a friend of mine, the behavior is identical.

The eGPU works without any issue for hours on my old XPS13 9310 with an Intel i7 1185G7 and an HP Dragonfly with a i5 11th gen.

There are multiple reports out there of users having the same issue, independent of device manufacturer. All they have in common is that they are using a Lunar Lake system.

[Marcus_St]

Interestingly, I've tried the Thunderbolt eGPU using Ubuntu 24.10 on the XPS 9350 with Core Ultra 258V and it worked immediately without any disconnects. On the same Laptop where the Thunderbolt device does not work using Windows 11...

[Earl_Intel]

Hi JamesOG,

Thank you for sharing this update with us.

Noted on this, I will further check on this and provide an update on this thread as soon as I can.

Best regards,

Earl E.

Intel Customer Support Technician

[Marcus_St]

@Earl_Intel  is there any update on this? The reports are getting more for all kinds of vendors...always the same problem but no solution...

[svarg]

Also not working for my Dell Lunar Lake XPS13 "Ultra 9 processor 288V" using Windows 11.

No CUDA/AI dev possible and gaming using RTX3090 with my  laptop. This was no problem with my old dell xps 1280p

Is this a CPU limitation or just Windows problem?

Other people complaining in reddit about eGPU:

https://www.reddit.com/r/eGPU/comments/1fte1je/any_initial_reports_on_compatibility_with_the_new/?rdt=49284

What's going wrong with Intel CPUs?  Lesser features? En**bleep**ification in progress??

[Earl_Intel]

Hello JamesOG, Marcus_St, and svarg,

Thank you for patiently waiting.

We appreciate you for reaching out to us about this issue, Intel is currently investigating on the issue.

We deeply apologize for the inconvenience this may have caused you guys, rest assured that we will provide an update as soon as possible.

Best regards,

Earl E.

Intel Customer Support Technician

[dazgluk72]

Was Testing HP Omnibook Ultra Flip (Core Ultra 288v) with OnexGPU 2 (AMD 7800M)

Out of the box, confirm that Wi-Fi and Sound adapters are disconnected and re-connected upon GPU insertion. also confirm that most of the time, GPU just disconnects after 5-10 seconds. Tried several ports/cables (including certified ones from CableMatters or Belkin)

Thinks became a little better, after updating the BIOS to the latest one, It's not yet released on HP website, so you have to re-install the vanilla Windows 11, and receive it via Windows update. After that, eGPU started constnantly being detected in the direct TB4 port, not in the angled one.

During experimenting with the benchmarks and drivers I've found out that "Rocket league" can be run, on 24.10.1/24.9.1 with GPU on Normal mode, and 24.12.1 while the GPU is in "boost" mode. 25.2.1 crash the drivers instantly. Other game tested (Forza Horizon 5), crashes the drivers instantly, in any mode / any version.

Will try another eGPU, and existing eGPU in another laptop, to isolate the failure better.

[James0G]

Great news! I hope ASUS releases a new BIOS for the Zenbook S 14 soon, so I can do some tests again.

[Earl_Intel]

Hi JamesOG,

I apologize for the long wait.

As of the moment, Intel is working with the stakeholders in the industry on the resolution to this issue, we recommend as a workaround to shut down the system, connect the eGPU device, boot the system, and then download and install the graphics driver from the vendor website.

Best regards,

Earl E.

Intel Customer Support Technician

[svarg]

I already tried this. Doesn't work for Win11 Dell XPS 13 LunarLake with Razer Core X + RTX3090. I guess the new Dell Pro 13" laptops also suffer this problem. So I sent   back laptop already, as there no more possibility for playing and Cuda dev.

But older version Dell XPS 1280p could do reliable hotplug  -after disabling USB Controller of the eGPU closure (it has USB Ports and ethernet port).

[JeanetteC_Intel]

Hello svarg,

I understand that you already tried the recommendations shared on this thread, however, I kindly request that you create a new thread for your case. This will allow us to focus on your specific problem and provide you with better assistance.  

Sincerely,

JeanetteC.

Intel Customer Support Technician

[neegool]

Thanks for checking this issue out.

I'm having the same problem with my Lenovo ThinkPad X9 (Core Ultra 258V). Upon plugging in my USB4 eGPU (GPD G1), the following error event was logged:

The Intel(R) ISH Offload Item Service service terminated with the following error:
The I/O operation has been aborted because of either a thread exit or an application request.

EventData

param1

Intel(R) ISH Offload Item Service

param2

%%995

4F00660066006C006F00610064004900740065006D0053006500720076006900630065000000

Then wifi, touchpad, and touchscreen stopped working.

[JeanetteC_Intel]

Hello neegool,

Thank you for posting in Intel Communities.

I understand that you are facing the same problem with your Lenovo ThinkPad X9 (Core Ultra 258V). However, I kindly request that you create a new thread for your case. This will allow us to focus on your specific problem and provide you with better assistance.  

Sincerely,

JeanetteC.

Intel Customer Support Technician