According to the KDE guys this is likely the same as bug 341497: https://bugs.kde.org/show_bug.cgi?id=341497
To summarize the fix is to either backport the patch below or upgrade to Qt 5.6. http://code.qt.io/cgit/qt/qtbase.git/commit/src/plugins/platforms/xcb/qxcbconnection.cpp?id=51ada7734ad780178ecced11e0dff454dfc2e5f2 Given how annoying this bug is I would be pretty happy with a swift backport. -- Francois Gouget <fgou...@free.fr> http://fgouget.free.fr/ Linux: the choice of a GNU generation
