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    <body><span class="vcard"><a class="email" href="mailto:yu.c.chen@intel.com" title="yu.c.chen@intel.com <yu.c.chen@intel.com>"> <span class="fn">yu.c.chen@intel.com</span></a>
</span> changed
          <a class="bz_bug_link 
          bz_status_REOPENED "
   title="REOPENED - Xorg waits for long time(200ms+) to invoke VT_RELDISP"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=99173">bug 99173</a>
          <br>
             <table border="1" cellspacing="0" cellpadding="8">
          <tr>
            <th>What</th>
            <th>Removed</th>
            <th>Added</th>
          </tr>

         <tr>
           <td style="text-align:right;">Status</td>
           <td>CLOSED
           </td>
           <td>REOPENED
           </td>
         </tr>

         <tr>
           <td style="text-align:right;">Resolution</td>
           <td>NOTABUG
           </td>
           <td>---
           </td>
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        <div>
            <b><a class="bz_bug_link 
          bz_status_REOPENED "
   title="REOPENED - Xorg waits for long time(200ms+) to invoke VT_RELDISP"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=99173#c13">Comment # 13</a>
              on <a class="bz_bug_link 
          bz_status_REOPENED "
   title="REOPENED - Xorg waits for long time(200ms+) to invoke VT_RELDISP"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=99173">bug 99173</a>
              from <span class="vcard"><a class="email" href="mailto:yu.c.chen@intel.com" title="yu.c.chen@intel.com <yu.c.chen@intel.com>"> <span class="fn">yu.c.chen@intel.com</span></a>
</span></b>
        <pre>Sorry for my late response, I've just confirmed this issue  can be still
reproduced on 4.12 vanilla kernel.  Here's the dmesg boot up log with
drm.debug=14 appended. Could you please point to me which part/code/function
in the i915 should I track when  using ftrace? 
Here's the history discussion on this issue:
<a href="https://lists.freedesktop.org/archives/xorg-devel/2016-December/052064.html">https://lists.freedesktop.org/archives/xorg-devel/2016-December/052064.html</a></pre>
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