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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 - [SKL] Sometimes fails to DPMS on"
href="https://bugs.freedesktop.org/show_bug.cgi?id=107489">107489</a>
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<th>Summary</th>
<td>[SKL] Sometimes fails to DPMS on
</td>
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<th>Product</th>
<td>DRI
</td>
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<th>Version</th>
<td>XOrg git
</td>
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<th>Hardware</th>
<td>x86-64 (AMD64)
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<th>OS</th>
<td>Linux (All)
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>medium
</td>
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<th>Component</th>
<td>DRM/Intel
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<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
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<th>Reporter</th>
<td>mattst88@gmail.com
</td>
</tr>
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<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
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<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr></table>
<p>
<div>
<pre>On my Lenovo P50, I'd guess 1/4 of the time it attempts to DPMS on, it fails to
modeset, leaving me with a black screen.
In my dmesg I see:
[drm:intel_dp_start_link_train] *ERROR* [CONNECTOR:71:eDP-1] Link Training
failed at link rate = 540000, lane count = 4
This has occurred with every kernel I've used on this machine, 4.9 to 4.17.5.
Typically closing the lid and letting the machine suspend/resume is sufficient
to get it back.
# lspci -s 0:02 -nn
00:02.0 VGA compatible controller [0300]: Intel Corporation HD Graphics P530
[8086:191d] (rev 06)
# xrandr -q
Screen 0: minimum 320 x 200, current 3840 x 2160, maximum 8192 x 8192
eDP-1 connected primary 3840x2160+0+0 (normal left inverted right x axis y
axis) 346mm x 194mm
3840x2160 60.00*+
Running xserver-1.19.5 and the modesetting driver.</pre>
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