https://bugs.freedesktop.org/show_bug.cgi?id=39202
--- Comment #21 from Siganderson dj_def@webmail.it 2011-08-16 02:14:04 PDT --- (In reply to comment #20)
You have to skip them, as you can't tell if they're affected by the problem.
Ok I will redo it from the beginning.
So this means you tried vblank_mode=0?
No, where should I put vblank_mode=0 to see the effect it does into kde?