I've used Yocto dora to build a kernel (3.0.35 4.1.0 modified wandboard kernel) and filesystem (fsl-image-gui) for a custom board based on the i.MX6S. When I run a Qt application on the board using startx ./my_application, the application runs but the screen is black. Certain widgets will show once they are updated (ie. if I click on a checkbox), but everything else is black.
I tried modifying xorg.conf to use Driver "fbdev" instead of Driver "vivante", but then when I run the application I get an error saying no screens found.
Does anyone know what could cause this?