Hi! This is most probably related to the big number of fixes Qt 5.5.0 got in this regard, with even more in 5.5.1. Sadly Qt 5.5.x will not land in unstable soon, we first need to pass the gcc5 transition which is due to start this friday. As a workaround you might want to use xrandr in the meantime (I personally wrote a script in /usr/local/bin to do that). Sorry for the inconvenience, Lisandro. -- Lisandro Damián Nicanor Pérez Meyer http://perezmeyer.com.ar/ http://perezmeyer.blogspot.com/
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