Comment 18 for bug 1449892

The bug used to affect my Dell XPS 13 9343. It is no longer the case with the package uploaded to vivid-proposed, the video output does look very good now and corruptions are visible. Information on package's installed version follow:

alessio@bizet:~$ dpkg-query -s xserver-xorg-video-intel
Package: xserver-xorg-video-intel
Status: install ok installed
Priority: optional
Section: x11
Installed-Size: 3174
Maintainer: Ubuntu Developers <email address hidden>
Architecture: amd64
Version: 2:2.99.917-1~exp1ubuntu2.2
Provides: xorg-driver-video
Depends: libc6 (>= 2.17), libdrm-intel1 (>= 2.4.38), libdrm2 (>= 2.4.25), libpciaccess0 (>= 0.8.0+git20071002), libpixman-1-0 (>= 0.30.0), libudev1 (>= 183), libx11-6, libx11-xcb1, libxcb-dri2-0, libxcb-dri3-0, libxcb-sync1, libxcb-util0 (>= 0.3.8), libxcb1, libxcursor1 (>> 1.1.2), libxdamage1 (>= 1:1.1), libxext6, libxfixes3, libxinerama1, libxrandr2 (>= 2:1.2.99.2), libxrender1, libxshmfence1, libxtst6, libxv1, libxvmc1, xorg-video-abi-19, xserver-xorg-core (>= 2:1.16.99.901)
Description: X.Org X server -- Intel i8xx, i9xx display driver
 This package provides the driver for the Intel i8xx and i9xx family
 of chipsets, including i810, i815, i830, i845, i855, i865, i915, i945
 and i965 series chips.
 .
 This package also provides XvMC (XVideo Motion Compensation) drivers
 for i810/i815 and i9xx and newer chipsets.
 .
 This package is built from the X.org xf86-video-intel driver module.
Homepage: http://www.x.org/
Original-Maintainer: Debian X Strike Force <email address hidden>