Created attachment 5198 [details] Qt5 on Cortex-A8 with QWidgets in frame-buffer Reproduce: build attached defconfig/.config and start the calculator example: /usr/lib/qt/examples/widgets/widgets/calculator/calculator -platform linuxfb -> no numbers are visible.
Created attachment 5204 [details] generated .config
After a complete rebuild and using Qt 5.2.1 the problem is gone.