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            <b><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [BDW] System hang while running Qt QML application, with unclaimed registers"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=97985#c13">Comment # 13</a>
              on <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [BDW] System hang while running Qt QML application, with unclaimed registers"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=97985">bug 97985</a>
              from <span class="vcard"><a class="email" href="mailto:yann.argotti@intel.com" title="yann <yann.argotti@intel.com>"> <span class="fn">yann</span></a>
</span></b>
        <pre>(In reply to Anssi Hannula from <a href="show_bug.cgi?id=97985#c12">comment #12</a>)
<span class="quote">> Created <span class=""><a href="attachment.cgi?id=126976" name="attach_126976" title="intel-drm-nightly 20160927 unclaimed read of 0x44404 with i915.enable_psr=0">attachment 126976</a> <a href="attachment.cgi?id=126976&action=edit" title="intel-drm-nightly 20160927 unclaimed read of 0x44404 with i915.enable_psr=0">[details]</a></span>
> intel-drm-nightly 20160927 unclaimed read of 0x44404 with i915.enable_psr=0

> No kernel messages at hang time, same as before.

> Attached is also an unclaimed read of 0x44404 with "i915.enable_psr=0", it
> contains the same vblank-related backtrace as before without that parameter.</span >

Please try with applying Chris' patch set
<a href="https://patchwork.freedesktop.org/series/13230/">https://patchwork.freedesktop.org/series/13230/</a></pre>
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