====== Intel HD Graphics Full RGB Rendering ======

In recent Intel HD Graphics drivers, the range of colour values used for Red, Green and Blue is limited to 16->235 by default and not the full range of 0->255.  On a digital connection (such as [[wp>Hdmi|HDMI]]) to a monitor or television this can result in grey looking blacks and washed out colours.

This article describes how to extended the driver settings to the full range on a per-user basis, so that full colour rendering is restored.

===== Supported Releases =====

Should work in all Ubuntu releases.  Tested on 14.04 (Trusty Tahr) 32 and 64-bit Desktops.

===== Required Packages =====
None, as the xserver-xorg package will already be installed.

===== Configuration =====

Create the file ''.xprofile'' in the appropriate user's home folder and add the following to it (replacing ''x'' with the port number your display is connected to):

<code>
xrandr --output HDMIx --set "Broadcast RGB" "Full"
</code>

Once saved, log out of the X Session and back in to see full, deep blacks and an extended colour range.

===== See Also =====

  * [[sigma:how_to]]
  * [[sigma:contact]]