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        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - HDMI audio won't pass ac3 through another device"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=89479">89479</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>HDMI audio won't pass ac3 through another device
          </td>
        </tr>

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

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

        <tr>
          <th>Reporter</th>
          <td>linux@cmadams.net
          </td>
        </tr></table>
      <p>
        <div>
        <pre>I have an AMD E-350 system (Radeon HD6310).  When I connect it directly to my
receiver and play a file with AC3 audio, the receiver properly switches over to
Dolby Digital decoding.  However, when I connect the HDMI to another device's
pass-through (Vizio TV, Xbox One), the receiver stays in stereo mode and I get
garbage audio.  Other devices can send Dolby Digital through (e.g. I tried a
TiVo Roamio through the Vizio TV), so I know it can be done.

I'm guessing there's some bit of HDMI handshake not happening when the Radeon
tries to switch modes and is connected to another device, but I don't know how
to debug that.  Please let me know what I can do to figure this out.

I'm testing this with a trailer downloaded from hdtrailers.net, playing with
either XBMC or VLC.</pre>
        </div>
      </p>
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