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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: ecode 0:0x85ffbcff"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=84743">84743</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>GPU hang: ecode 0:0x85ffbcff
          </td>
        </tr>

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

        <tr>
          <th>Version</th>
          <td>XOrg CVS
          </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>plaes@plaes.org
          </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=107466" name="attach_107466" title="/sys/class/drm/card0/error">attachment 107466</a> <a href="attachment.cgi?id=107466&action=edit" title="/sys/class/drm/card0/error">[details]</a></span>
/sys/class/drm/card0/error

Maybe useful info:
System: Lenovo T431s
GPU: Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09)
Kernel: 3.17.0 (Using Kernel Mode Setting driver: i915, version 1.6.0 20140725)

x11-libs/libdrm-2.4.56  USE="-libkms -static-libs"
media-libs/mesa-10.3.0  USE="classic dri3 egl gallium gbm llvm nptl vdpau
wayland xvmc -bindist -debug -gles1 -gles2 -opencl -openmax -openvg -osmesa
-pax_kernel -pic -r600-llvm-compiler (-selinux) -xa" 
x11-base/xorg-server-1.16.1:0/1.16.1  USE="glamor ipv6 nptl suid systemd udev
wayland xorg -dmx -doc -kdrive -minimal (-selinux) -static-libs -tslib -unwind
-xnest -xvfb"
x11-drivers/xf86-video-intel-2.99.916  USE="dri sna udev xvmc -debug -glamor
-uxa"

Kernel log:
[21706.556502] [drm] stuck on render ring
[21706.557061] [drm] GPU HANG: ecode 0:0x85ffbcff, in Prison Architec [10485],
reason: Ring hung, action: reset
[21706.557063] [drm] GPU hangs can indicate a bug anywhere in the entire gfx
stack, including userspace.
[21706.557064] [drm] Please file a _new_ bug report on bugs.freedesktop.org
against DRI -> DRM/Intel
[21706.557065] [drm] drm/i915 developers can then reassign to the right
component if it's not a kernel issue.
[21706.557066] [drm] The gpu crash dump is required to analyze gpu hangs, so
please always attach it.
[21706.557067] [drm] GPU crash dump saved to /sys/class/drm/card0/error
[21727.541556] [drm] stuck on render ring
[21727.542243] [drm] GPU HANG: ecode 0:0x87f77c12, in Prison Architec [10485],
reason: Ring hung, action: reset
[21780.535992] [drm] stuck on render ring
[21780.536531] [drm] GPU HANG: ecode 0:0x85ffdcfb, in Prison Architec [10485],
reason: Ring hung, action: reset
[21820.522752] [drm] stuck on render ring
[21820.523440] [drm] GPU HANG: ecode 0:0x87f77c12, in Prison Architec [10485],
reason: Ring hung, action: reset
[21841.515797] [drm] stuck on render ring
[21841.516363] [drm] GPU HANG: ecode 0:0x85ff7c7f, in Prison Architec [10485],
reason: Ring hung, action: reset
[21854.507486] [drm] stuck on render ring
[21854.508185] [drm] GPU HANG: ecode 0:0x87f77c12, in Prison Architec [10485],
reason: Ring hung, action: reset</pre>
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