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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - External monitor connected through dock says blank"
href="https://bugs.freedesktop.org/show_bug.cgi?id=108694">108694</a>
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<th>Summary</th>
<td>External monitor connected through dock says blank
</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>Other
</td>
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<th>OS</th>
<td>All
</td>
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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>benjamin@sipsolutions.net
</td>
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<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
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<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=142408" name="attach_142408" title="dmesg with drm.debug=0x106 set and plugging in the dock">attachment 142408</a> <a href="attachment.cgi?id=142408&action=edit" title="dmesg with drm.debug=0x106 set and plugging in the dock">[details]</a></span>
dmesg with drm.debug=0x106 set and plugging in the dock
Seems to happen quite reliably with my setup, but not necessarily reproducable
with different hardware components. i.e. different laptop, almost identical
kernel seemed fine:
* X1 Carbon 4th Gen
* Lenovo OneLink+ dock
* 1x DELL 1920x1080 external screen
* 1x DELL U2515H (2560x1440) external screen
The U2515H stayed blank but GNOME (wayland) thought it was there. Attaching
dmesg output with drm.debug=0x106 set. Kernel 4.18.16-300.fc29.x86_64 seems to
behave better in this regard.
Kernel was drm-tip, latest commit:
commit 9ef57c71386778d8425b4884252f1919184645a1 (HEAD, drm-tip/drm-tip)
Author: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
Date: Fri Oct 19 12:25:58 2018 +0100
drm-tip: 2018y-10m-19d-11h-24m-46s UTC integration manifest</pre>
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</p>
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