GPD Win Max 2 USB4 Problems

[MrWerew]

I have a Problem with my GPD Win Max 2.
The USB4 port doesn't function as it should. It takes charge and some USB data (like drives), but no display out (any kind), and no PCIe tunneling eighter (eGPU).

I tried 5 USB-C dongles, no HDMI or DP video-out works.
I tried USB-C external display too, with no success. Every time I want to connect a display to USB4 the operating system freezes, sometimes an error notification comes up after I unplug the external display. Sometimes the built in display goes dark or the image corrupts, but it recovers every time when I unplug the cable.

I tried my Razer Core X eGPU too, it charges the laptop but no new device is shown in device manager. It behaves just like my AYA-NEO 2021 with USB 3.2.

The integrated HDMI port works just fine.
My AYA-NEO 2021 works with everything listed above but the eGPU, and naturally everything works with my OneXplayer Mini with USB4.

It seems like GPD had false advertising, or is my Win Max 2 defective?
Has anyone the same problems with a Win Max 2?

Edit: AMD version

[Levent]

AMD or Intel version?

[MrWerew]

@Levent AMD version

[BobVonBob]

Given all you've tried, the answer is that the port doesn't work. This is something you'll have to take up with GPD.

[MrWerew]

I tried GPD support. It seems they don't care much. They wrote this:

"We are afraid it's USB4 compatible issue. We currently also received some feedback that USB4 can't output display. Since USB4 is new standard, the firmware that controller factory provided is not way perfect.,the compatibility is not as good.

Sophie Wang
Best Regards
Kendyz@gpd.hk"

What now?

[MrWerew]

It looks like nobody on this forum bought a Win Max 2.

It's better this way, because the support of GPD sucks. I replied to Sophie from GPD, but no answer to date.

[dohi73]

Hi, I got similar problem but mine is no reaction whien I connected an external portable monitor using DP alt to the USB4 port. (USB3.2 port works well for this purpose).

I haven't checked with eGPU yet. It seems that the USB4 on WinMax2 works only for data transfer like external HDD. It sucks.

I tried also BIOS setting explained in the link below but it was unsuccessful.

 

 

[monkeyrebellion]

I had this same issue connecting a thunderbolt 4 dock to my Win Max 2. There are 2 USB C ports in the back and both support USB4. For me, the labeled one will not work. The other one does.

 

I also have an issue where maxing out the TDP causes stutters when using a dock. I'm testing turning down the TDP to see if that really is the issue.

 

Also if you haven't already, definitely update the BIOS and drivers. I was getting weird stutters when running a game and YouTube, and that was resolved with updates. Hope this helps!