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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 - Failure to recognize DisplayPort signal"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=106191">106191</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Failure to recognize DisplayPort signal
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>DRI
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>DRI git
          </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>DRM/Radeon
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>dri-devel@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>francois.jacques@gmail.com
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=139004" name="attach_139004" title="callstack from DRM/radeon">attachment 139004</a> <a href="attachment.cgi?id=139004&action=edit" title="callstack from DRM/radeon">[details]</a></span>
callstack from DRM/radeon

DRM/radeon fails with in drm_dp_link_rate_to_bw_code 

Driver fails to negotiate video resolution with DP-connected monitor, on any of
4 DP ports. 
Controller can drive monitor at 2048x1080 through HDMI adapter. Straight DP
cable only works in console (low-res)

Disconnecting power cable from monitor for 5 minutes trick doesn't help ;)

Video controller: FirePro v8800 ChipID 0x6888 (see hardware.txt for details, 4
DPs)
DP monitor: Dell U2717DA 
Workstation: HP xw8600
Kernel messages with backtrace: see var_log_messages_excerpt.txt
Max res supported by monitor: 1440p (see Xorg.0.log)</pre>
        </div>
      </p>


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