I'm currently running a Qt5 application on a raspberry running a custom linux built with buildroot.
I can run my app and example app available in /usr/lib/qt/examples but when i stop them the last frame displayed stay on the screen and i'm not able to retrieve my terminal.
I use linuxfb as display manager with QT_QPA_PLATFORM=linuxfb
I don't see any trouble on dmesg on in traces using QT_DEBUG_PLUGINS=1
I just migrate from Qt4 and was using the qt virtual framebuffer with -qws, it worked nicely, but i found that it's not available in Qt5.
I know that i can display a black screen with cat /dev/zero > /dev/fb0 but i want to use my terms after the app stop and switch between them with ctrl-alt-Fn.