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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 - gen7 regression [bisected]: GPU hangs when attempting to bring up gdm login screen"
href="https://bugs.freedesktop.org/show_bug.cgi?id=96899">96899</a>
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<th>Summary</th>
<td>gen7 regression [bisected]: GPU hangs when attempting to bring up gdm login screen
</td>
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<th>Product</th>
<td>Mesa
</td>
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<th>Version</th>
<td>git
</td>
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<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
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<th>OS</th>
<td>Linux (All)
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>major
</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>idr@freedesktop.org
</td>
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<th>Reporter</th>
<td>awatry@gmail.com
</td>
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<th>QA Contact</th>
<td>intel-3d-bugs@lists.freedesktop.org
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<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=125028" name="attach_125028" title="dmesg output with hangs">attachment 125028</a> <a href="attachment.cgi?id=125028&action=edit" title="dmesg output with hangs">[details]</a></span>
dmesg output with hangs
A week or so ago I had to reboot my laptop at work, and when it came back up,
all I saw was a cursor on a black screen, instead of my login prompt.
Hardware: Haswell i7 mobile (Core i7-4810MQ), 16GB RAM
OS: Ubuntu 16.04, x86-64, mesa/libdrm from git, kernel 4.6.3 from mainline
kernel ppa
I knew that this had been working as of my last reboot, and also with 11.2
installed, so I spent a bit of time last night bisecting down to:
39fdee6b2df3cb297c0d2aba285f6991824867b9 is the first bad commit
commit 39fdee6b2df3cb297c0d2aba285f6991824867b9
Author: Topi Pohjolainen <<a href="mailto:topi.pohjolainen@intel.com">topi.pohjolainen@intel.com</a>>
Date: Wed May 18 22:07:05 2016 +0300
i965/blorp/gen7+: Do not trigger push constant space reconfig
Signed-off-by: Topi Pohjolainen <<a href="mailto:topi.pohjolainen@intel.com">topi.pohjolainen@intel.com</a>>
Reviewed-by: Jason Ekstrand <<a href="mailto:jason@jlekstrand.net">jason@jlekstrand.net</a>>
During bisecting steps, I did a full power-cycle and cold boot, as warm reboots
did NOT necessarily reproduce the issue reliably. This is still an issue in
mesa git as of July 11.
dmesg is attached</pre>
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