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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] [i915] External monitor does not wake up but laptop screen does (USB-C -> DisplayPort)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=97638">97638</a>
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<th>Summary</th>
<td>[SKL] [i915] External monitor does not wake up but laptop screen does (USB-C -> DisplayPort)
</td>
</tr>
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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)
</td>
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<th>OS</th>
<td>Linux (All)
</td>
</tr>
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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
</td>
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<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
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<th>Reporter</th>
<td>victor.trac@gmail.com
</td>
</tr>
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<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>
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<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=126304" name="attach_126304" title="dmesg">attachment 126304</a> <a href="attachment.cgi?id=126304&action=edit" title="dmesg">[details]</a></span>
dmesg
-- system architecture: x86_64
-- kernel version: ("uname -r"). 4.8.0-1-drm-intel-nightly
-- Linux distribution: archlinux
-- Machine or mother board model: Dell XPS 13 9350
-- Display connector: usb-c -> kensington sd4600p -> displayport -> dell P2715q
Problem:
My laptop turns off displays (both internal and external) after 10 minutes.
When I move the mouse or keyboard, the laptop display turns on as expected, but
the external monitor stays in sleep mode. Based on what's displaying on my
laptop's screen, I can tell that GDM is showing the login window on what it
thinks is the external monitor. I can get the external monitor to work at this
point by power cycling the Dell P2715Q, which causes it to detect the DP Input.
At this point everything works fine until the next time the laptop turns off
the displays.</pre>
</div>
</p>
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