https://bugs.freedesktop.org/show_bug.cgi?id=91416
--- Comment #1 from Michel Dänzer michel@daenzer.net --- Yes, in order to avoid tearing, you either need to run the (OpenGL) application in fullscreen with page flipping enabled, or you need to use a compositing manager which does the same thing. When using a compositing manager, enabling DRI3 may help.