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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 - Tearing with i965 + modesetting"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=101827">101827</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Tearing with i965 + modesetting
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>Mesa
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>17.1
          </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>normal
          </td>
        </tr>

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

        <tr>
          <th>Component</th>
          <td>Drivers/DRI/i965
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>intel-3d-bugs@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>moosotc@gmail.com
          </td>
        </tr>

        <tr>
          <th>QA Contact</th>
          <td>intel-3d-bugs@lists.freedesktop.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>More details at:

<a href="https://lists.freedesktop.org/archives/intel-gfx/2017-July/133110.html">https://lists.freedesktop.org/archives/intel-gfx/2017-July/133110.html</a>
<a href="https://lists.freedesktop.org/archives/intel-gfx/2017-July/133244.html">https://lists.freedesktop.org/archives/intel-gfx/2017-July/133244.html</a>

On top of that I've updated the tearing demonstration code:
<a href="https://boblycat.org/~malc/teartest.c">https://boblycat.org/~malc/teartest.c</a>

This new version can take a command line argument - number of swaps per frame 
and when invoked like: "~/tmp/gl/teartest 2" will tear even without DRI3(i.e.
with DRI2) (though with some override-redirect magic outlined in the first
post)

With DRI3 it more or less always tears (fullscreen, nothing on top).

This leads me to suspsect that this is connected to bugs #97957 and #97173

My, perhaps naive, attempts to validate this hunch by compiling and using
Mesa/DRI from git head weren't entirely successful.</pre>
        </div>
      </p>


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