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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - System hangs after resume from hibernate (S4) on eM250 running kernel 4.9.38"
href="https://bugs.freedesktop.org/show_bug.cgi?id=101966">101966</a>
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<th>Summary</th>
<td>System hangs after resume from hibernate (S4) on eM250 running kernel 4.9.38
</td>
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<th>Product</th>
<td>DRI
</td>
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<th>Version</th>
<td>DRI git
</td>
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<th>Hardware</th>
<td>x86 (IA32)
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<th>OS</th>
<td>Linux (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
</td>
</tr>
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<th>Reporter</th>
<td>david.a58@optusnet.com.au
</td>
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<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>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=133110" name="attach_133110" title="dmesg before hibernation">attachment 133110</a> <a href="attachment.cgi?id=133110&action=edit" title="dmesg before hibernation">[details]</a></span>
dmesg before hibernation
This bug appears to be similar to #99669.
On resume from hibernate, after the messages about progress of the image
loading process, the display goes blank and the system is unresponsive, forcing
a hard power reset to restart.
I have found that if I do 'rmmod -f i915' prior to hibernation, then I can
blindly do 'modprobe i915' after resume and the display returns.
I am attaching four files created when executing
'intel_reg_dumper > ird_before; rmmod -f i915; dmesg > dmesg_before; echo disk
<span class="quote">> /sys/power/state; dmesg > dmesg_after; intel_reg_dumper > ird_after; modprobe</span >
i915'</pre>
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