Resolved! Could not queue DRM page flip on screen DSI1 (Permission denied)
HII've already run this commandContinue to runroot@stm32mp1:~# /usr/share/examples/opengl/hellowindow/hellowindowqt.qpa.input: X-less xkbcommon not available, not performing key mappingCould not queue DRM page flip on screen DSI1 (Device or resourc...