Comment 22 for bug 247003

Intel cards are hit by http://bugs.freedesktop.org/show_bug.cgi?id=15477 but normally only when using compiz, so I don't know if it's related.

One of your xorg.conf's posted use the i810 driver, which I think is obsolete. You should use "intel" or better not specify anything. It should work fine without xorg.conf at all.