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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 - Juniper 5770 entering Hibernate crashes the system (instant reboot)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=91841">91841</a>
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<th>Summary</th>
<td>Juniper 5770 entering Hibernate crashes the system (instant reboot)
</td>
</tr>
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<th>Product</th>
<td>DRI
</td>
</tr>
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<th>Version</th>
<td>unspecified
</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>
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<th>Severity</th>
<td>critical
</td>
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<th>Priority</th>
<td>medium
</td>
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<th>Component</th>
<td>DRM/Radeon
</td>
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<th>Assignee</th>
<td>dri-devel@lists.freedesktop.org
</td>
</tr>
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<th>Reporter</th>
<td>Heiko.Lechner@ruhr-uni-bochum.de
</td>
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<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=118037" name="attach_118037" title="grep(ed) drm out of dmesg">attachment 118037</a> <a href="attachment.cgi?id=118037&action=edit" title="grep(ed) drm out of dmesg">[details]</a></span>
grep(ed) drm out of dmesg
Hi!
I'm running Lubuntu 15.04 with open source radeon driver.
Hibernating with systemd crashed, so I read this guide:
<a href="https://www.kernel.org/doc/Documentation/power/basic-pm-debugging.txt">https://www.kernel.org/doc/Documentation/power/basic-pm-debugging.txt</a>
# echo freezer > /sys/power/pm_test
# echo platform > /sys/power/disk
# echo disk > /sys/power/state
worked
# echo devices > /sys/power/pm_test
# echo platform > /sys/power/disk
# echo disk > /sys/power/state
crashed
so according to the guide it seemed to be a driver issue.
I started in recovery mode (command line) and pm_test worked as far as core- so
hibernate worked.
The modules that are only loaded during "normal" boot are:
cfg80211
amdkfd
amd_iommu_v2
radeon
Even without cfg80211 hibernate crashes the system, so only radeon is left.
So I booted with radeon.modeset=0 kernel parameter resulting in radeon not
loading at all- but _hibernate works_!
Then I booted with radeon.dpm=0 kernel parameter resulting in
power_method=profile and profile set to default but hibernate does not work and
crashes.
For me it is obvious that this behavior is triggered by radeon driver.
What can I do next?</pre>
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