Many People have been having problems with Intel Graphics in widescreen so here is the solution howto fix this.
Open Up Your Terminal.
Install i8xx,i9xx display driver.
In order to use higher resolution install updated Intel i8xx, i9xx display driver. It is provided by a package called xserver-xorg-video-intel. This package provides the driver for the Intel i8xx and i9xx family of chipsets, including i810, i815, i830, i845, i855, i865, i915, and i945 series chips.