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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 - xorg-server-1.17.2 no longer detects Radeon card: blank screen"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=92478">92478</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>xorg-server-1.17.2 no longer detects Radeon card: blank screen
          </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>atoth@atoth.sote.hu
          </td>
        </tr>

        <tr>
          <th>QA Contact</th>
          <td>xorg-team@lists.x.org
          </td>
        </tr></table>
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        <div>
        <pre>I experience the symptom on two systems (FirePro V4800 and FirePro M5950).
xorg-server-1.17.1 runs fine:
Upgrading to 1.17.2 results in blank screen.
relevant log snippet:
(II) modeset(G0): using drv /dev/dri/card0
(EE) No devices detected.

while 1.17.1 show this:
(WW) Falling back to old probe method for modesetting
(II) [KMS] Kernel modesetting enabled.
...</pre>
        </div>
      </p>
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