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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 - Thunderbolt display not detected"
href="https://bugs.freedesktop.org/show_bug.cgi?id=109795">109795</a>
</td>
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<th>Summary</th>
<td>Thunderbolt display not detected
</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>
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<th>Status</th>
<td>NEW
</td>
</tr>
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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>max@element.in
</td>
</tr>
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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>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=143493" name="attach_143493" title="dmesg_xrandr_lspci_lsusb_logs">attachment 143493</a> <a href="attachment.cgi?id=143493&action=edit" title="dmesg_xrandr_lspci_lsusb_logs">[details]</a></span>
dmesg_xrandr_lspci_lsusb_logs
I am using a Dell XPS 13 (9370) connected to a Caldigit TS3 Plus thunderbolt
dock. On this dock I have two monitors connected. One is connected to the
display port of the dock, the second one is connected to an USB-C Thunderbolt
port using an USB-C to mini DP adapter.
The second monitor is only detected, when I _first_ plug in the adapter and
_then_ plug in the the cable to the adapter. This also only works when the
system has booted _and_ I am logged in. I already disabled thunderbolt security
completely in UEFI. Once the monitor has been detected it is also working
during boot, when I restart the system. This also appears when directly
plugging in the adapter to a Thunderbolt port of the laptop.
I can reproduce the issue also with latest DRM-tip kernel
<a href="https://kernel.ubuntu.com/~kernel-ppa/mainline/drm-tip/2019-02-21/">https://kernel.ubuntu.com/~kernel-ppa/mainline/drm-tip/2019-02-21/</a>
I Reported this bug already to Ubuntu kernel:
<a href="https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1817070">https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1817070</a></pre>
</div>
</p>
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