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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 - Screen tears on xrandr orientation inverted"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=86548">86548</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Screen tears on xrandr orientation inverted
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>xorg
          </td>
        </tr>

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

        <tr>
          <th>Assignee</th>
          <td>chris@chris-wilson.co.uk
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>jeff@deserettechnology.com
          </td>
        </tr>

        <tr>
          <th>QA Contact</th>
          <td>intel-gfx-bugs@lists.freedesktop.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=109827" name="attach_109827" title="screenshot of tearing effect">attachment 109827</a> <a href="attachment.cgi?id=109827&action=edit" title="screenshot of tearing effect">[details]</a></span>
screenshot of tearing effect

When xrandr -o inverted is run, the resulting image is split down the middle.
This happens 95% of the time; it has worked once or twice without tearing.
Rotation can be activated through unity-control-center Display Settings
rotation field, and that reliably works fine. When xrandr -o normal is run, the
display returns to normal (although bug #1376760 is observed). xrandr -o right
and xrandr -o left also reliably work without issue; this only occurs on xrandr
-o inverted. The same behaviors are observed with the longer form of the
command xrandr --output eDP1 --rotation inverted, etc.

This has also been reported at <a href="https://github.com/pfps/yoga-laptop/issues/28">https://github.com/pfps/yoga-laptop/issues/28</a>,
which uses xrandr commands to invert the display.

See also Launchpad:
<a href="https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1395182">https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1395182</a>

lspci:

00:02.0 VGA compatible controller [0300]: Intel Corporation Haswell-ULT
Integrated Graphics Controller [8086:0a16] (rev 0b) (prog-if 00 [VGA
controller])

Screenshot attached.</pre>
        </div>
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