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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 - [drm] GPU HANG: ecode 8:0:0x00201001, reason: Ring hung, action: reset"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=91764">91764</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>[drm] GPU HANG: ecode 8:0:0x00201001, reason: Ring hung, action: reset
          </td>
        </tr>

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

        <tr>
          <th>Version</th>
          <td>XOrg git
          </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>siflfran@hawo.net
          </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=117927" name="attach_117927" title="crash log">attachment 117927</a> <a href="attachment.cgi?id=117927&action=edit" title="crash log">[details]</a></span>
crash log

I get the following when load the i915 module on a broadwell-u:

[  891.121322] [drm] Initialized drm 1.1.0 20060810
[  891.127056] [drm] Memory usable by graphics device = 4096M
[  891.127151] [drm] VT-d active for gfx access
[  891.127251] [drm] Replacing VGA console driver
[  891.127957] Console: switching to colour dummy device 80x25
[  891.134284] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[  891.134290] [drm] Driver supports precise vblank timestamp query.
[  891.134435] vgaarb: device changed decodes:
PCI:0000:00:02.0,olddecodes=io+mem,decodes=io+mem:owns=io+mem
[  891.147350] ACPI: Video Device [GFX0] (multi-head: yes  rom: no  post: no)
[  891.147690] input: Video Bus as
/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/LNXVIDEO:00/input/input7
[  891.147803] [drm] Initialized i915 1.6.0 20150327 for 0000:00:02.0 on minor
0
[  891.185303] fbcon: inteldrmfb (fb0) is primary device
[  891.313813] Console: switching to colour frame buffer device 240x67
[  891.318478] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device
[  891.318504] i915 0000:00:02.0: registered panic notifier
[  899.180411] [drm] stuck on render ring
[  899.181241] [drm] GPU HANG: ecode 8:0:0x00201001, reason: Ring hung, action:
reset
[  899.181272] [drm] GPU hangs can indicate a bug anywhere in the entire gfx
stack, including userspace.
[  899.181307] [drm] Please file a _new_ bug report on bugs.freedesktop.org
against DRI -> DRM/Intel
[  899.181341] [drm] drm/i915 developers can then reassign to the right
component if it's not a kernel issue.
[  899.181376] [drm] The gpu crash dump is required to analyze gpu hangs, so
please always attach it.
[  899.181423] [drm] GPU crash dump saved to /sys/class/drm/card0/error
[  899.183561] drm/i915: Resetting chip after gpu hang
[  905.179524] [drm] stuck on render ring
[  905.180348] [drm] GPU HANG: ecode 8:0:0x00201001, reason: Ring hung, action:
reset
[  905.180435] [drm:i915_set_reset_status [i915]] *ERROR* gpu hanging too fast,
banning!
[  905.182602] drm/i915: Resetting chip after gpu hang</pre>
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