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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 - System hangs for seconds repeatedly and sometimes crashes"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=94101">94101</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>System hangs for seconds repeatedly and sometimes crashes
          </td>
        </tr>

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

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

        <tr>
          <th>Hardware</th>
          <td>Other
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>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>gegenstand+bugs.freedesktop.org@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>Created <span class=""><a href="attachment.cgi?id=121689" name="attach_121689" title="GPU crash dump saved to /sys/class/drm/card0/error">attachment 121689</a> <a href="attachment.cgi?id=121689&action=edit" title="GPU crash dump saved to /sys/class/drm/card0/error">[details]</a></span>
GPU crash dump saved to /sys/class/drm/card0/error

On an Intel NUC6i5SY with Fedora 23 (up to date) and monitor attached via DP
the system hangs for 2-10 secs.

Sometimes the system does not recover at all - only reboot helps.

dmesg prints:

[  184.013519] [drm] stuck on render ring
[  184.014589] [drm] GPU HANG: ecode 9:0:0x87f99ff9, in gnome-shell [2466],
reason: Ring hung, action: reset
[  184.014596] [drm] GPU hangs can indicate a bug anywhere in the entire gfx
stack, including userspace.
[  184.014600] [drm] Please file a _new_ bug report on bugs.freedesktop.org
against DRI -> DRM/Intel
[  184.014604] [drm] drm/i915 developers can then reassign to the right
component if it's not a kernel issue.
[  184.014608] [drm] The gpu crash dump is required to analyze gpu hangs, so
please always attach it.
[  184.014613] [drm] GPU crash dump saved to /sys/class/drm/card0/error
[  184.016433] drm/i915: Resetting chip after gpu hang
[  186.008063] [drm] RC6 on

(crash dump attached)


Sometimes it only prints:

[ 5747.043340] [drm] stuck on render ring
[ 5747.044505] [drm] GPU HANG: ecode 9:0:0x85df9fff, in gnome-shell [2466],
reason: Ring hung, action: reset
[ 5747.046854] drm/i915: Resetting chip after gpu hang
[ 5749.044000] [drm] RC6 on

Don't know if related but dmesg also sometimes prints:</pre>
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