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    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Priority</th>
          <td>medium
          </td>
        </tr>

        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - "Kicking stuck wait on render ring" when playing video using mplayer"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=71328">71328</a>
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>chris@chris-wilson.co.uk
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>"Kicking stuck wait on render ring" when playing video using mplayer
          </td>
        </tr>

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

        <tr>
          <th>Product</th>
          <td>xorg
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=88799" name="attach_88799" title="i915_error_state">attachment 88799</a> <a href="attachment.cgi?id=88799&action=edit" title="i915_error_state">[details]</a></span>
i915_error_state

Whenever I started playing video using mplayer, my srceen became frozen, took
long time switching to tty using ctl+alt+f1. there are several lines in the
output of `dmesg` like:

[  112.471206] hda-intel: IRQ timing workaround is activated for card #0.
Suggest a bigger bdl_pos_adj.
[  115.453374] [drm:ring_stuck] *ERROR* Kicking stuck wait on render ring
[  121.438200] [drm:ring_stuck] *ERROR* Kicking stuck wait on render ring
[  125.461444] [drm:ring_stuck] *ERROR* Kicking stuck wait on render ring
[  129.464673] [drm:ring_stuck] *ERROR* Kicking stuck wait on render ring
[  133.467901] [drm:ring_stuck] *ERROR* Kicking stuck wait on render ring
[  137.471130] [drm:ring_stuck] *ERROR* Kicking stuck wait on render ring
[  141.474358] [drm:ring_stuck] *ERROR* Kicking stuck wait on render ring
[  141.505914] bbswitch: enabling discrete graphics


I've google a lot but none of them solves my problem.

uploaded `/sys/kernel/debug/dri/0/i915_error_state`, hope it helps.

I'm ready to provide any log necessary.

kernel:
3.12.0-gentoo #1 SMP PREEMPT Wed Nov 6 18:07:56 EST 2013 x86_64 Intel(R)
Core(TM) i7-4700MQ CPU @ 2.40GHz GenuineIntel GNU/Linux

x11-libs/libva-intel-driver 2.99.905-r1</pre>
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