Not much of a film director but here a short video of the phenomenon.Ah, that doesn't looks like a software problem, indeed. Stefan
Yeah, that seems like a hardware problem. Two thoughts:
1) Boot off a live USB stick; that eliminates currently-installed software as the culprit.
2) Try squeezing (not crushing) various parts of the laptop when
it's exhibiting the problem; if squeezing affects the
manifestation, it's a hardware issue. (The reverse is not
necessarily true.)
-- Kent West <")))>< IT Support / Client Support Abilene Christian University Westing Peacefully - http://kentwest.blogspot.com