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    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [GLK] no signal - with samsung 4k TV - HDMI UHD Color (ENABLED)"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=110496">110496</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>[GLK] no signal - with samsung 4k TV - HDMI UHD Color (ENABLED)
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>DRI
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>DRI git
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>x86-64 (AMD64)
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>All
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>normal
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>medium
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>DRM/Intel
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>intel-gfx-bugs@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>piotr.kasprzak@me.com
          </td>
        </tr>

        <tr>
          <th>QA Contact</th>
          <td>intel-gfx-bugs@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>intel-gfx-bugs@lists.freedesktop.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=144072" name="attach_144072" title="NUC with UHD color enabled at 1080p then I switch resolution to 4k">attachment 144072</a> <a href="attachment.cgi?id=144072&action=edit" title="NUC with UHD color enabled at 1080p then I switch resolution to 4k">[details]</a></span>
NUC with UHD color enabled at 1080p then I switch resolution to 4k

Hi
For some reason on Gemini Lake NUC - NUC7CJYH
Latest DRM-tip kernel - latest firmware in Samsung QLED 2018
There is no signal if "HDMI UHD color" is enabled for HDMI where is NUC
connected


Here log where is HDMI UHD Color enabled (no signal on TV)
<a href="http://ix.io/1GSD">http://ix.io/1GSD</a>

Here where HDMI UHD Color is Disable (no problem)
<a href="http://ix.io/1GSG">http://ix.io/1GSG</a>


I Discover its working when is UHD color Enabled and 1080p resolution 
but when you switch to 4k signal gone :( 
I Attached log where I boot NUC with UHD color enabled at 1080p then I switch
resolution to 4k and signal gone




EDID: <a href="http://ix.io/1GSV">http://ix.io/1GSV</a></pre>
        </div>
      </p>


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