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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 - TB3 + MST Hub"
href="https://bugs.freedesktop.org/show_bug.cgi?id=105839">105839</a>
</td>
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<th>Summary</th>
<td>TB3 + MST Hub
</td>
</tr>
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<th>Product</th>
<td>DRI
</td>
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<th>Version</th>
<td>unspecified
</td>
</tr>
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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>
</tr>
<tr>
<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>
<tr>
<th>Reporter</th>
<td>jam01@protonmail.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></table>
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<div>
<pre>Displays settings menu and xrandr will report 2 external monitors connected but
the monitors do not display anything.
The hardware:
Thinkpad T470
Intel i7-7600U
Intel HD Graphics 620
16GB of RAM
2x Asus 229H-P HDMI monitors
1x TB3 Startech dock -> 1x DP
(<a href="https://www.startech.com/Cards-Adapters/Laptop-docking-stations/thunderbolt-3-docking-station~TB3DKDPMAW">https://www.startech.com/Cards-Adapters/Laptop-docking-stations/thunderbolt-3-docking-station~TB3DKDPMAW</a>)
1x Monoprice DP -> 2x HDMI adapter
(<a href="https://www.monoprice.com/product?p_id=21974">https://www.monoprice.com/product?p_id=21974</a>)
Software:
Fedora 27
GNOME 3.26.2
?
boltctl 0.1-2 reports the TB3 dock as authorized, security: none. I disabled
TB3 security in BIOS.
When I first installed all the hardware it was not quite working, but fiddling
around with the displays settings menu both external monitors came on. Usually
only one monitor would come on but I saw that if I lowered the resolution of
one monitor and then changed it back, then both would work. Some major
flickering would occur across both of them but they'd stay on. If laptop went
to sleep they would not come back on wake, it would just crash. Which sounds
related to <a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - Hard lock when unplugging and reconnecting external USB-C DP display"
href="show_bug.cgi?id=103474">https://bugs.freedesktop.org/show_bug.cgi?id=103474</a> and
<a class="bz_bug_link
bz_status_NEW "
title="NEW - External display disconnected with docking station Dell TB16"
href="show_bug.cgi?id=105716">https://bugs.freedesktop.org/show_bug.cgi?id=105716</a>
Eventually it got worse so I'd check for dnf update every now and then. Now I
can only ever get one monitor to actually come on and have run out of ideas.
I'm sure there's need for logged activity but I don't have a lot of experience
gathering that. Let me know what logs or what commands to run and I'll do so.</pre>
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