https://bugs.freedesktop.org/show_bug.cgi?id=101229
--- Comment #17 from Paul Paul.Hancock.17041993@live.com ---
Ok, that 'tearing' is in fact much different to what I've been seeing, in your case it looks a lot more like *corruption* as entire chunks of buffer are being rendered in random offset positions. I dont really know exactly what might cause this, but I do know that running applications in fullscreen at a different resolution to native can result in various buffer corruption...
(In reply to Michel Dänzer from comment #12)
(In reply to Paul from comment #11)
Use the system and run OpenGL applications,
Fullscreen or windowed? Does enabling any sync-to-vblank functionality in the apps or setting the environment variable vblank_mode=3 for running them help?
Windowed, I rarely run things in fullscreen, of which it's usually borderless windowed anyway. I don't remember if setting the vblank mode actually worked though...