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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 --- - pwm1[_enable] faults after hibernate/restore related to automatic (or otherwise) fan management"
href="https://bugs.freedesktop.org/show_bug.cgi?id=66022">66022</a>
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<th>Assignee</th>
<td>nouveau@lists.freedesktop.org
</td>
</tr>
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<th>Summary</th>
<td>pwm1[_enable] faults after hibernate/restore related to automatic (or otherwise) fan management
</td>
</tr>
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<th>QA Contact</th>
<td>xorg-team@lists.x.org
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr>
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<th>OS</th>
<td>All
</td>
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<th>Reporter</th>
<td>mr.dash.four@googlemail.com
</td>
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<th>Hardware</th>
<td>Other
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Component</th>
<td>Driver/nouveau
</td>
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<th>Product</th>
<td>xorg
</td>
</tr></table>
<p>
<div>
<pre>This is a collection of 2 bugs, which I think are related (hence why I am
reporting them both here) as they both happen as a result of hibernate/restore:
1. After a hibernate/restore cycle, the fan management option (the value of
pwm1_enable) is not restored; and also
2. After a hibernate/restore cycle, when automatic fan management is applied
("echo 2 > .../pwm1_enable"), this doesn't work - the nouveau driver takes the
fan speed to 2 and keeps it there *regardless* of the temperature of the video
card, which may cause the card to BURN OUT!
The kernel in use is 3.9.6 with the stock-supplied nvidia driver. For more
details please see <a href="https://bugzilla.redhat.com/show_bug.cgi?id=976658">https://bugzilla.redhat.com/show_bug.cgi?id=976658</a></pre>
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</p>
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