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<th>Priority</th>
<td>medium
</td>
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - nouveau no longer reports D3cold on linux-next as of at least 20130906"
href="https://bugs.freedesktop.org/show_bug.cgi?id=69345">69345</a>
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<th>Assignee</th>
<td>nouveau@lists.freedesktop.org
</td>
</tr>
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<th>Summary</th>
<td>nouveau no longer reports D3cold on linux-next as of at least 20130906
</td>
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<th>Severity</th>
<td>minor
</td>
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<th>Classification</th>
<td>Unclassified
</td>
</tr>
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<th>OS</th>
<td>Linux (All)
</td>
</tr>
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<th>Reporter</th>
<td>tod.jackson@gmail.com
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<th>Hardware</th>
<td>x86-64 (AMD64)
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<th>Status</th>
<td>NEW
</td>
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<th>Version</th>
<td>git
</td>
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<th>Component</th>
<td>Drivers/DRI/nouveau
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</tr>
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<th>Product</th>
<td>Mesa
</td>
</tr></table>
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<div>
<pre>Hi there,
I saw Rafael made this recent commit:
<a href="http://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git/commit/?id=8ad928d52e63a9b7d69f0873d7318c4561e2f8cd">http://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git/commit/?id=8ad928d52e63a9b7d69f0873d7318c4561e2f8cd</a>
That may not be the culprit at all, sorry. I noticed that if I'm using, say,
the latest drm-intel-next kernel or nouveau kernel ACPI reports nouveau's
status properly, e.g. nouveau: power state changed by ACPI to D3cold, however
in next I no longer get these messages, although the device seems to be in
D3cold (?). At least temperatures are much lower, especially when building
software.
[23301.994315] ACPI Warning: \_SB_.PCI0.P0P2.PEGP._DSM: Argument #4 type
mismatch - Found [Buffer], ACPI requires [Package] (20130725/nsarguments-95)
(That's the only indicator of power transitions now - a warning that might go
away in the future - p.s., do I need to do some DSDT hacking for that or is it
on the Linux-side?)
Invoking lm_sensors' sensors command shows N/A for the nouveau device on
Optimus laptops, as expected if the device is in D3cold.</pre>
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