<html>
<head>
<base href="https://bugs.freedesktop.org/" />
</head>
<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Laptop black screen [drm:intel_dp_start_link_train [i915]] *ERROR* failed to train DP, aborting"
href="https://bugs.freedesktop.org/show_bug.cgi?id=93517">93517</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Laptop black screen [drm:intel_dp_start_link_train [i915]] *ERROR* failed to train DP, aborting
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr>
<tr>
<th>Version</th>
<td>DRI 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>major
</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>jeroko@gmail.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>
<tr>
<th>i915 platform</th>
<td>BDW
</td>
</tr>
<tr>
<th>i915 features</th>
<td>display/DP
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=120710" name="attach_120710" title="dmesg(dmr.debug=0xe)">attachment 120710</a> <a href="attachment.cgi?id=120710&action=edit" title="dmesg(dmr.debug=0xe)">[details]</a></span>
dmesg(dmr.debug=0xe)
I'm using the kernel from drm-intel-nightly branch on the 2015-12-19, with the
i915.fastboot=1 module parameter (otherwise I get <a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED - eDP link clock recovery fails with *ERROR* too many full retries, give up"
href="show_bug.cgi?id=92878">bug 92878</a>). The 4K laptop
display shows some tearing, but it's functional. Sometimes there is a random
hotplug event ([drm:intel_get_hpd_pins] hotplug event received), then it goes
into training and the display goes black, I can't get it back unless I reboot
the laptop. I didn't plug or do anything to trigger that hotplug event.</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are the QA Contact for the bug.</li>
<li>You are on the CC list for the bug.</li>
<li>You are the assignee for the bug.</li>
</ul>
</body>
</html>