FP5 USB-C DisplayPort Alt Mode mirrors desktop but not home screen

Discuss The Products
, ,
1

Hi there, has anyone encountered problems trying to use FP5’s USB-C DisplayPort Alt Mode? I’ve found that I can use Android 14 (stock FP firmware with latest updates) in regular and desktop mode with some devices, but not others.

My particular use case is Xreal Air smart glasses as a mirror of the Android home screen/apps. The glasses work with the FP5 in desktop mode but not in home screen mirroring mode.

I did wonder if the FP5 / glasses / USB-C cable were defective, but the glasses work OK in both modes with another Android phone, and the FP5 works in both modes with a USB-C monitor I’ve tested. So, I suspect it’s something like the resolution / density of the home screen.

I’ve tried playing with the SecondScreen app and “adb shell wm …” commands but not found a winning combination yet, so I thought I would post on here in case anyone else has experienced something similar.

Thanks in advance for any thoughts!

PS I’m not using the Xreal Nebula “Augmented Reality” app, just screen mirroring. I’m aware that the FP5 doesn’t have hardware support for AR, but I don’t think that’s relevant in this case.

2

Dont those rely on ARCore?

3

I did think this might be the problem at first, but there’s no AR here - this is literally just screen mirroring to the glasses the same way that it would work if you plugged a USB-C monitor into the phone. ARCore is (I think!) only relevant if you are trying to run an app which uses it, e.g. for position tracking.