Forum Discussion
Touchback not working with USB-C display (Surface Hub 2S)
I've come to the same conclusion after trying to troubleshoot Touchback not supported - although detected, drivers up-to-date etc - from a windows 11 23H2 host to 2 different a Surface Hub 3 with different USB-C/TB4 cables. But would love to get insight from microsoft tech provider, we're in Paris France TZ if your are still around cezarcretu !
Issue also referenced here and https://answers.microsoft.com/fr-fr/surface/forum/surfdevother-surfver_surf3-surftop_display/no-touchback-support-on-surface-hub-3-85-with-usb/35cefe89-24e9-43ea-bb87-1ae5e4cd388a
MicrosoftHello jo-chemla,
If you're using Windows 11 IoT with MTR experience, currently USB-C connection doesn't support touchback. Currently, you will need to switch to USB-C input to use the Surface Hub as a secondary monitor. This is because the Connect app is no longer available with the MTR experience.
The recommended way to project to the Surface Hub which includes touchback is to use Teams Cast and enable remote control. However, the most common scenario when you would need touchback is during a Whiteboard session. If this is your scenario, it's best to start a Whiteboard session as described in this article.
Best regards,
Cezar
Hi again, thanks a lot for the reply. MTR stands for "Microsoft Teams Room" experience, right? Indeed the OS version installed is Windows 11 IoT Enterprise. Can I disable MTR in any way to get the Connect app back? For example installing a new windows OS version, or Resetting/Repairing the OS? I've found https://github.com/MicrosoftDocs/Devices-docs/blob/22b73fac67b8ca381014e071e9ef30ad98133127/surface-hub/device-reset-surface-hub.md also pointing to the https://www.microsoft.com/en-us/download/details.aspx?id=52210 & drivers that might be of interest, or more specifically https://learn.microsoft.com/en-us/surface-hub/surface-hub-recover-reset#recovery-from-a-usb-drive but I'd love to get a confirmation before doing anything wrong - since this guide mentions only using Windows 11 IoT with MTR rather than Windows 10 Team 2022 Update.
Teams cast or whiteboard is not adapted to our scenario. We need a very powerful PC to run a 3D experience app, for which the small integrated Iris Xe chipset GPU is not sufficient, hence the need for touchback/inkback.
You also mentioned, since Connect app is not longer available with MTR experience, that I'll "need to switch to USB-C input to use the Surface Hub as a secondary monitor". How can I do that? Thanks again for the detailed replies.
Best,
- cezarcretu
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
- 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!