Ubuntu
xserver-xorg-video-intel package

  1. Bug #1098334
  2. Comment #229

Comment 229 for bug 1098334

Revision history for this message
David Pérez (sanete) wrote :

I've found a relevant document about our bug:

There are a couple of backends available for accelerating the DDX. "UXA" (Unified Acceleration Architecture) is the mature backend that was introduced to support the GEM driver model. It is in the process of being superseded by "SNA" (Sandybridge's New Acceleration). Until that process is complete, the ability to choose which backend to use remains for backwards compatibility.

SNA is the default acceleration method in xf86-video-intel. If you are experience issues with SNA (e.g. pixelated graphics, corrupt text, etc.), try using UXA instead, which can be done by creating an X configuration file containing the following:
/etc/X11/xorg.conf.d/20-intel.conf
Section "Device"
   Identifier "Intel Graphics"
   Driver "intel"
   Option "AccelMethod" "uxa"
EndSection

Source: https://wiki.archlinux.org/index.php/Intel_graphics#SNA_issues

So, I've created a file called 60-patch-graphis.conf in the /usr/share/X11/xorg.conf.d folder, and reboot my system. I let you know about the results....