Follow-up from bug 496592. A regression was introduced in xf86-video-intel-2.99.907 which causes display corruption, especially with window decorations, in certain cases. Patch from upstream: http://cgit.freedesktop.org/xorg/driver/xf86-video-intel/patch/?id=4d8f78bc95f8dd36693f74365dbc3c442fbbf8a9
+*xf86-video-intel-2.99.907-r1 (06 Jan 2014) + + 06 Jan 2014; Jason A. Donenfeld <zx2c4@gentoo.org> + +files/xf86-video-intel-2.99.907-invalidation.patch, + +xf86-video-intel-2.99.907-r1.ebuild: + Fix issues with window decoration corruption on ivy bridge. +