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        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - LVDS blank screen on GM45"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=94825">94825</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>LVDS blank screen on GM45
          </td>
        </tr>

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

        <tr>
          <th>Version</th>
          <td>unspecified
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>x86 (IA32)
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Linux (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>rob@solution-space.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=122709" name="attach_122709" title="Boot log #1">attachment 122709</a> <a href="attachment.cgi?id=122709&action=edit" title="Boot log #1">[details]</a></span>
Boot log #1

[This is extracted the from the mailing list thead here:
<a href="https://lists.freedesktop.org/archives/dri-devel/2016-April/104142.html">https://lists.freedesktop.org/archives/dri-devel/2016-April/104142.html</a>]

My setup is an embedded GM45 based board with a screen connected via 24 
bit LVDS. After boot to console (no X), the screen is blank. Initially tested
on kernel 3.14.57, but the same happens on 4.5. This report uses kernel 4.5.0.
Older, pre-KMS versions of the kernel worked fine.

In the BIOS, the panel type is configured as "<a href="mailto:1920x1080@148.5M">1920x1080@148.5M</a>".

Attached boot log #1 includes Ville's patch "drm/i915: Read timings from the
correct transcoder in intel_crtc_mode_get()" but this code is not touched here
because the driver chooses to use the VBT mode.</pre>
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