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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 - GPU hang"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=88844">88844</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>GPU hang
          </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/Intel
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>intel-gfx-bugs@lists.freedesktop.org
          </td>
        </tr>

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

        <tr>
          <th>QA Contact</th>
          <td>intel-gfx-bugs@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>intel-gfx-bugs@lists.freedesktop.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>While web browsing, screen went blank and backlight went off as well. Had to do
a power cycle after which the system worked fine again.

Ubuntu 14.04 on a 2008 MacBook 4.1. GPU: Intel GMA X3100



snippet of dmesg:
[   25.792974] [drm] GPU crash dump saved to /sys/class/drm/card0/error
[   25.792978] [drm] GPU hangs can indicate a bug anywhere in the entire gfx
stack, including userspace.
[   25.792979] [drm] Please file a _new_ bug report on bugs.freedesktop.org
against DRI -> DRM/Intel
[   25.792981] [drm] drm/i915 developers can then reassign to the right
component if it's not a kernel issue.
[   25.792982] [drm] The gpu crash dump is required to analyze gpu hangs, so
please always attach it.
[   25.793613] i915: render error detected, EIR: 0x00000010
[   25.793618] i915: page table error
[   25.793620] i915:   PGTBL_ER: 0x00000100
[   25.793624] [drm:i915_report_and_clear_eir] *ERROR* EIR stuck: 0x00000010,
masking
[   25.793667] [drm] initialized overlay support</pre>
        </div>
      </p>
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