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<base href="https://bugs.freedesktop.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [BAT BDW] *ERROR* failed to enable link training/failed to start channel equalization"
href="https://bugs.freedesktop.org/show_bug.cgi?id=96614">96614</a>
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<th>Summary</th>
<td>[BAT BDW] *ERROR* failed to enable link training/failed to start channel equalization
</td>
</tr>
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<th>Product</th>
<td>DRI
</td>
</tr>
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<th>Version</th>
<td>DRI git
</td>
</tr>
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<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
</tr>
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<th>OS</th>
<td>All
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>major
</td>
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<th>Priority</th>
<td>medium
</td>
</tr>
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<th>Component</th>
<td>DRM/Intel
</td>
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<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>imre.deak@intel.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>
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<div>
<pre>Created <span class=""><a href="attachment.cgi?id=124637" name="attach_124637" title="dmesg">attachment 124637</a> <a href="attachment.cgi?id=124637&action=edit" title="dmesg">[details]</a></span>
dmesg
<a href="http://gfxci.rb.intel.com/archive/results/CI_IGT_test/RO_CI_DRM_531/ro-bdw-i7-5557U/">http://gfxci.rb.intel.com/archive/results/CI_IGT_test/RO_CI_DRM_531/ro-bdw-i7-5557U/</a>
After suspend-to-ram and resume on an external DP output:
[ 291.867864] [drm:intel_enable_shared_dpll] enable LCPLL 1350 (active 1, on?
0) for crtc 26
[ 291.867865] [drm:intel_enable_shared_dpll] enabling LCPLL 1350
[ 291.870603] [drm:intel_dp_aux_ch] dp_aux_ch timeout status 0x7145000c
...
[ 291.950407] [drm:drm_dp_dpcd_access] too many retries, giving up
...
[ 292.119813] [drm:intel_dp_sink_dpms] failed to enable sink power state
...
[ 292.373085] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR*
failed to enable link training
...
[ 292.458254] [drm:intel_dp_start_link_train [i915]] *ERROR* failed to start
channel equalization</pre>
</div>
</p>
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