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<base href="https://bugs.freedesktop.org/" />
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<th>Priority</th>
<td>medium
</td>
</tr>
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Hibernate: 'echo reboot > /sys/power/disk' no longer has any effect"
href="https://bugs.freedesktop.org/show_bug.cgi?id=57882">57882</a>
</td>
</tr>
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<th>Assignee</th>
<td>systemd-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Summary</th>
<td>Hibernate: 'echo reboot > /sys/power/disk' no longer has any effect
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>systemd-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux (All)
</td>
</tr>
<tr>
<th>Reporter</th>
<td>bugzilla@alastairj.plus.com
</td>
</tr>
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<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
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<th>Component</th>
<td>general
</td>
</tr>
<tr>
<th>Product</th>
<td>systemd
</td>
</tr></table>
<p>
<div>
<pre>Before updating to systemd 196 a few days ago, it was possible to reboot
immediately after hibernating, by setting /sys/power/disk to 'reboot'. This is
useful if you want to, for example, boot up a different Linux distro.
However after upgrading to 196, the system powers down instead.
Carried out by doing the following -
echo reboot > /sys/power/disk
systemctl hibernate
Checking /sys/power/disk after doing the 'echo' shows as expected -
platform shutdown [reboot] suspend
Checking /sys/power/disk after powering back on and thawing -
[platform] shutdown reboot suspend
Journalctl | grep "Hibernation mode" used to produce a single line for the
hibernation -
Nov 30 17:42:17 <hostname> kernel: PM: Hibernation mode set to 'reboot'
Now it gives 2 lines -
Dec 04 11:44:30 <hostname> kernel: PM: Hibernation mode set to 'reboot'
Dec 04 11:44:30 <hostname> kernel: PM: Hibernation mode set to 'platform'
So it looks like the original contents of /sys/power/disk ('reboot') are being
overwritten ('platform') by the 'systemctl hibernate' command.</pre>
</div>
</p>
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