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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 - Sony Vaio Z2 laptop; attempt to use external HDMI monitor gives pipe A stuck"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=92659">92659</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Sony Vaio Z2 laptop; attempt to use external HDMI monitor gives pipe A stuck
          </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>john@calva.com
          </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>With kernel 4.2.3 attempting to set an external HDMI monitor as the primary
screen in Gnome (function/F7 or from tools menu) moves the display to the
external monitor but gnome stops responding.

dmesg shows:

[ 1289.604921] [drm:intel_dp_start_link_train [i915]] *ERROR* too many full
retries, give up
[ 1289.613146] [drm:intel_dp_start_link_train [i915]] *ERROR* too many full
retries, give up
[ 1289.621230] [drm:intel_dp_start_link_train [i915]] *ERROR* too many full
retries, give up
[ 1289.629174] [drm:intel_dp_start_link_train [i915]] *ERROR* too many full
retries, give up
[ 1289.637050] [drm:intel_dp_start_link_train [i915]] *ERROR* too many full
retries, give up
[ 1289.644877] [drm:intel_dp_start_link_train [i915]] *ERROR* too many full
retries, give up
[ 1289.652712] [drm:intel_dp_start_link_train [i915]] *ERROR* too many full
retries, give up
[ 1289.652894] [drm:intel_dp_complete_link_train [i915]] *ERROR* failed to
train DP, aborting
[ 1289.684550] [drm:__intel_set_mode [i915]] *ERROR* mode set failed: pipe A
stuck</pre>
        </div>
      </p>
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