Hi @munderwoods ,
Looks like your Qt app is trying to use the X11 platform plugin (xcb), but that’s not really possible, given that the proprietary GPU drivers (Vivante) being used don’t have support for X11.
Did you look at how we setup a Qt 5 environment in our Debian containers, like I previously said here: How do I get my QT app on my verdin with dev carrier board? - #22 by lucas_a.tx
One of the things we set is exactly the platform plugin through QT_QPA_PLATFORM being wayland. Please take a look at our Qt 5 Wayland dockerfile as well.
Best regards,
Lucas Akira