Comment # 5 on bug 97059 from smoki

 I reproduced this on current Debian Sid and Kabini with current distro
packages, same blender as Michel's.

 LIBGL_DRI3_DISABLE=1 fixes it, but...

 But it is tricky one, it has something to do with vsync it seems, as also is
not reproducable with vblank_mode=3 , but with vblank_mode=0 it is there :)