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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Unable to set "IT Content" bit for HDMI and DisplayPort"
href="https://bugs.freedesktop.org/show_bug.cgi?id=104506">104506</a>
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<th>Summary</th>
<td>Unable to set "IT Content" bit for HDMI and DisplayPort
</td>
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<th>Product</th>
<td>DRI
</td>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>All
</td>
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<th>OS</th>
<td>Linux (All)
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>medium
</td>
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<th>Component</th>
<td>DRM/Intel
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<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
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<th>Reporter</th>
<td>nw9165-3201@yahoo.com
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<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
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<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr></table>
<p>
<div>
<pre>Hi,
apparently the Intel HD Graphics driver for Windows has a "IT Content" option
that can be either enabled or disabled, see following screenshot for example:
<a href="https://www.howtogeek.com/wp-content/uploads/2016/12/img_5855c293ac26d.jpg">https://www.howtogeek.com/wp-content/uploads/2016/12/img_5855c293ac26d.jpg</a>
According to a post on the AVS Forum, enabling "IT Content" does the following:
<a href="http://www.avsforum.com/forum/26-home-theater-computers/1477460-theory-about-intel-s-hdmi-quantization-range-setting-full-0-255-a-7.html#post24629922">http://www.avsforum.com/forum/26-home-theater-computers/1477460-theory-about-intel-s-hdmi-quantization-range-setting-full-0-255-a-7.html#post24629922</a>
<span class="quote">> HDMI specs "IT Content" flag is set On in video stream.
>
> CEA-861:
> "In IT applications (e.g. involving bit mapped text),
> each pixel in the source’s frame buffer is most clearly
> displayed if it is directly mapped to a light-emitting pixel
> on the display device - such that adjacent pixels are
> completely independent and do not interact.
> The IT content bit indicates when picture content is
> composed according to common IT practice (i.e. without
> regard to Nyquist criterion) and is unsuitable for
> analog reconstruction or filtering. When the IT content bit
> is set to 1, downstream processors should pass
> pixel data unfiltered and without analog reconstruction."</span >
Apparently there is no option for it on the Linux driver.
Can you please add an option to the Linux driver which allows to enable the "IT
Content" bit?
Regards</pre>
</div>
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