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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Black screen on skylake after 18.0 => 18.2 update"
href="https://bugs.freedesktop.org/show_bug.cgi?id=109583">109583</a>
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<th>Summary</th>
<td>Black screen on skylake after 18.0 => 18.2 update
</td>
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<th>Product</th>
<td>Mesa
</td>
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<th>Version</th>
<td>18.2
</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
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<th>Component</th>
<td>Drivers/DRI/i965
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<th>Assignee</th>
<td>intel-3d-bugs@lists.freedesktop.org
</td>
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<th>Reporter</th>
<td>alkisg@gmail.com
</td>
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<th>QA Contact</th>
<td>intel-3d-bugs@lists.freedesktop.org
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<pre>Several schools reported black screens after normally updating their Ubuntu
boxes from 18.0.5-0ubuntu0~18.04.1 to 18.2.2-0ubuntu1~18.04.1.
Downgrading mesa fixes the problem.
lspci: 00:02.0 VGA compatible controller [0300]: Intel Corporation HD Graphics
530 [8086:1912] (rev 06) Subsystem: ASUSTeK Computer Inc. HD Graphics
530 [1043:8694] Kernel modules: i915
Unfortunately I can't find a lot of useful information, here are some bits:
* systemctl --failed says "gpu-manager" and "lightdm" have failed
* Xorg.log is clean: <a href="https://termbin.com/6l2b">https://termbin.com/6l2b</a>
* dmesg too: <a href="https://termbin.com/ip4e">https://termbin.com/ip4e</a>
* It happens on lightdm/MATE, I don't know about Ubuntu GNOME.
* If one runs `xinit` from ssh, it fails with:
i965: Failed to submit batchbuffer: Invalid argument</pre>
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