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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 - nouveau memory allocation issue causes screen distortions under KDE"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=104897">104897</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>nouveau memory allocation issue causes screen distortions under KDE
          </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>major
          </td>
        </tr>

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

        <tr>
          <th>Component</th>
          <td>Driver/nouveau
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>nouveau@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>estellnb@elstel.org
          </td>
        </tr>

        <tr>
          <th>QA Contact</th>
          <td>xorg-team@lists.x.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=137106" name="attach_137106" title="screenshot">attachment 137106</a> <a href="attachment.cgi?id=137106&action=edit" title="screenshot">[details]</a></span>
screenshot

Working under mesa-common-dev 13.0.6-1+b2, plasma-workspace 4:5.8.6-2.1, Xorg
1.19.2 and kernel 4.15.0-rc9+ I do get weird screen distortions under KDE as
soon as I enable my external 4K display. As KDE runs stable and fine with my
integrated display in a much lower resolution I would guess this to be a memory
allocation issue of nouveau. Other less memory intense desktop environments
like Xfce still run fine under 4K. The issue is known since long (see also the
KDE bug: <a href="https://bugs.kde.org/show_bug.cgi?id=368275">https://bugs.kde.org/show_bug.cgi?id=368275</a>)</pre>
        </div>
      </p>


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