https://bugs.freedesktop.org/show_bug.cgi?id=92309
--- Comment #10 from Michel Dänzer michel@daenzer.net --- Presumably the cursor isn't captured by apitrace because it's not rendered using OpenGL but uses the Xcursor* APIs. The artifacts are most likely due to the cursor image not using proper pre-mulitplied alpha data as expected by those APIs, which apparently happens to "work" to some degree with other drivers / hardware.