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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 - [SKL] Resume from suspend to disk fails"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=100221">100221</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>[SKL] Resume from suspend to disk fails
          </td>
        </tr>

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

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

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

        <tr>
          <th>OS</th>
          <td>Linux (All)
          </td>
        </tr>

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

        <tr>
          <th>Severity</th>
          <td>major
          </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>le.trmr@gmail.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=130240" name="attach_130240" title="System info">attachment 130240</a> <a href="attachment.cgi?id=130240&action=edit" title="System info">[details]</a></span>
System info

Description: I have bisected Kernel 4.9.9 and determined the following to be
the cause:

commit f2a0409a08502d64fbe3990354dff5902b08d2fb
Author: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
Date:   Wed Sep 21 14:51:08 2016 +0100

    drm/i915/execlists: Reset RING registers upon resume

    commit bafb2f7d4755bf1571bd5e9a03b97f3fc4fe69ae upstream.

Kernel 4.10 does show the same behaviour.

Please also see the bisect history on github [1] and this forum thread [2].
[1] <a href="https://github.com/kxv/linux49.9">https://github.com/kxv/linux49.9</a>
[2]
<a href="https://forum.manjaro.org/t/linux-4-9-9-breaks-hibernation-4-9-8-works/17499">https://forum.manjaro.org/t/linux-4-9-9-breaks-hibernation-4-9-8-works/17499</a>


Expected behaviour: Resuming from suspend to disk normally by displaying lock
screen.

Actual behaviour: System powers on but resumes to a black screen.</pre>
        </div>
      </p>


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