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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 - nouveau PGRAPH - ERROR nsource: ILLEGAL_MTHD nstatus: PROTECTION_FAULT"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=102840">102840</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>nouveau PGRAPH - ERROR nsource: ILLEGAL_MTHD nstatus: PROTECTION_FAULT
          </td>
        </tr>

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

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

        <tr>
          <th>Hardware</th>
          <td>x86 (IA32)
          </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/other
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>philippe.neyrat@mailz.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Hi !

First I don't really know if my problem is posted at the right place, sorry for
that, but I don't really understand all the categories...

I got some wrong text rendering in console, and some missing graphical object
under X.

I've found some messages in logs such as :
Sep 18 15:39:44 pluton kernel: [  176.941808] [drm] nouveau 0000:01:00.0:
PFIFO_CACHE_ERROR - Ch 3/4 Mthd 0x0000 Data 0x88000004
Sep 18 15:39:44 pluton kernel: [  176.941840] [drm] nouveau 0000:01:00.0:
PGRAPH - ERROR nsource: ILLEGAL_MTHD nstatus: PROTECTION_FAULT
Sep 18 15:39:44 pluton kernel: [  176.941854] [drm] nouveau 0000:01:00.0:
PGRAPH - ch 3 (0x00075000) subc 4 class 0x0000 mthd 0x0180 data 0x00007308

I've found that this bug is old but can't find a solution.

I've tried to install the Nvidia driver, but it freezes at boot, even I made a
/etc/X11/xorg.conf file (with nvidia-xconfig).

I'm running Debian Wheezy (up to date):
uname :
Linux pluton 3.2.0-4-rt-686-pae #1 SMP PREEMPT RT Debian 3.2.89-2 i686
GNU/Linux

Can you help me solve this ?
Please note that english is not my native language, so write as simple as you
can.

Thanks a lot.

Best regards

Philippe</pre>
        </div>
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