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

        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - Lockup after attempt to enable discrete Radeon GPU on Linux 3.9rc4"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=62882">62882</a>
          </td>
        </tr>

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

        <tr>
          <th>Summary</th>
          <td>Lockup after attempt to enable discrete Radeon GPU on Linux 3.9rc4
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>normal
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Linux (All)
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>runetmember@gmail.com
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>x86-64 (AMD64)
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

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

        <tr>
          <th>Component</th>
          <td>DRM/Radeon
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>DRI
          </td>
        </tr></table>
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        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=77173" name="attach_77173" title="crash log">attachment 77173</a> <a href="attachment.cgi?id=77173&action=edit" title="crash log">[details]</a></span>
crash log

When I try to enable discrete GPU I get kernel module crash (please look into
attached log) and system lockup (few seconds later).

Software:
Kubuntu 13.04 x86_64 updated from Canonical X Staging PPA (there is just stable
X.Org Server 1.14, stable Mesa 9.1 and stable 7.1.0 radeon driver)
Linux 3.9rc4 
Mesa: 9.1
libdrm-radeon1: 2.4.43
xserver-xorg-video-radeon: 7.1.0
xserver-xorg-core: 1.14.0

Hardware:
Acer Aspire 7560G laptop,
AMD APU A8-3500M with integrated Radeon HD 6620G (SUMO)
Discrete AMD Radeon HD 6650M (TURKS)

"xrandr --listproviders" output:
Providers: number : 2
Provider 0: id: 138 cap: 0xf, Source Output, Sink Output, Source Offload, Sink
Offload crtcs: 2 outputs: 3 associated providers: 1 name:radeon
Provider 1: id: 85 cap: 0xf, Source Output, Sink Output, Source Offload, Sink
Offload crtcs: 6 outputs: 0 associated providers: 1 name:radeon</pre>
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