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<page xmlns="http://projectmallard.org/1.0/"
      type="topic" style="question"
      id="color-notspecifiededid">

  <info>
    <link type="guide" xref="color#problems"/>
    <link type="guide" xref="color-gettingprofiles"/>
    <link type="guide" xref="color-why-calibrate"/>
    <desc>Default monitor profiles do not have a calibration date.</desc>
    <credit type="author">
      <name>Richard Hughes</name>
      <email>richard@hughsie.com</email>
    </credit>
    <include href="legal.xml" xmlns="http://www.w3.org/2001/XInclude"/>
  </info>

  <title>Why don’t the default monitor profiles have a calibration expiry?</title>
  <p>
    The default color profile used for each monitor is generated
    automatically based on the display 
    <link href="https://en.wikipedia.org/wiki/Extended_Display_Identification_Data">
    EDID</link> which is stored in a memory chip inside the monitor.
    The EDID only gives us a snapshot of the available colors the monitor
    was capable of displaying when it was manufactured, and does not
    contain much other information for color correction.
  </p>

  <note style="tip">
    <p>
      Getting a profile from the monitor vendor or creating a profile
      yourself would lead to more accurate color correction.
    </p>
  </note>

</page>