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      <base href="https://bugs.freedesktop.org/" />
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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 - No screen with Radeon Xpress 1200 since Kernel 4.1"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=92917">92917</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>No screen with Radeon Xpress 1200 since Kernel 4.1
          </td>
        </tr>

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

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

        <tr>
          <th>Hardware</th>
          <td>Other
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>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/Radeon
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>xorg-driver-ati@lists.x.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>linux@psyca.de
          </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=119588" name="attach_119588" title="dmesg">attachment 119588</a> <a href="attachment.cgi?id=119588&action=edit" title="dmesg">[details]</a></span>
dmesg

I cant see any screen while booting after the Grub menu - or at last in the
desktop.
I tried different Distros like Mageia 5 (where it worked with 3.19.x and doesnt
work since Kernel 4.1.x -> 4.1.12 tested and 4.2.5), aswell under Ubuntu 15.10
and OpenSuse 42.1.

dmesg was done with Kernel 3.19.

Sometimes (with Kernel 4.2.15) i see the message if i try to start with the
Kernelcommand "nomodset"
drm:radeon_init [radeon]] *ERROR* No UMS Support in radeon module!
than it freezes.</pre>
        </div>
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