Forum Discussion

Iron Contributor

Jun 25, 2020

Touchback not working with USB-C display (Surface Hub 2S)

We just got two Surface Hub 2S at work, but I've been unable to make touch-back work on a single USB-C cable. https://docs.microsoft.com/en-us/surface-hub/surface-hub-2s-connect, it's supposed to...

cezarcretu

Microsoft

Oct 21, 2024

Hi jo-chemla,

Yes, MTR stands for Microsoft Teams Room. You can log in in Windows with your Administrator account and open the Connect app when touchback is required. However, for security reasons, this is not recommended and the design of the MTR Experience is not designed to work in this scenario.

Since Microsoft is always looking for feedback on how the products are used in order to improve them, it would be great if you could provide feedback from your device (question mark at the bottom right of the screen).

Also, to switch to another video input, the button for that is located next to the volume buttons as shown here.

Best regards,

Cezar

jo-chemla

Copper Contributor

Oct 22, 2024

Thanks again for the reply. Yes I do use the admin account - auto-login to avoid overhead - but cannot find the Connect app anywhere. I can connect to external wireless display from the surface hub admin account, but what I want to do is the opposite - use the Hub as an external display, and more importantly, transmit touchback events from the Hub to the PC connected via HDMI/USB-C + USB-C. Indeed I do use the Change video source button on the right to switch to a the connected PC/laptop. Is there a way to install that Connect app back on the surface Hub with MTR? Thanks!

jo-chemla
Copper Contributor
Oct 23, 2024
Thanks again for your feedback. Wireless display is not an option for latency/reactivity reasons. Anyway, I've tried launching hte Connect app manually - thanks for providing the link to instructions - but a Windows 11 PC do not support miracast, it has to be connected via a Cable as shown via the Win+K shortcut.

USB-C for video IS supported, I use it - as well as hdmi cable - on my surface hub 3 with windows 11. However, it won't at the same time receive video and send/transmit USB devices inputs to the host PC for touchback/inkback support - although the device do appear in the host device manager and devices list, Touchscreen enabled surface hub etc.

So I assume touchback support has to be removed from the windows documentation fro Surface Hub 3 / Win 11, otherwise this is really misleading to potential customers - on top of loosing peoples time for trying to make it work since it is advertised to be available.
cezarcretu
Microsoft
Oct 22, 2024
Hi jo-chemla,

Ok, I see what you mean. This feature is not enabled by default in Windows 11 so you will need to do this first. Note that you will need to open the Connect app manually as this is when Windows starts broadcasting its availability to receive a wireless projection.

For the USB-C video ingest, this is currently not available on the Windows 11 IoT with MTR experience but I highly recommend providing feedback from your device as this feature might be added in the future.

Thank you

Cezar