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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 --- - linux-3.14-rc7 radeon/nouveau runtime-suspend never coming back"
href="https://bugs.freedesktop.org/show_bug.cgi?id=76531">76531</a>
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<th>Assignee</th>
<td>dri-devel@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Summary</th>
<td>linux-3.14-rc7 radeon/nouveau runtime-suspend never coming back
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux (All)
</td>
</tr>
<tr>
<th>Reporter</th>
<td>bonbons67@internet.lu
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Other
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Version</th>
<td>XOrg CVS
</td>
</tr>
<tr>
<th>Component</th>
<td>DRM/other
</td>
</tr>
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<th>Product</th>
<td>DRI
</td>
</tr></table>
<p>
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<pre>Most recent testing: 3.14-rc7 mainline.
As suggested on IRC by imirkin, returning -EBUSY instead of -EINVAL from
nouveau_pmops_runtime_suspend() avoids driver to fall too far to the ground.
When returning -EINVAL connectors get being seen as "disconnected" and there is
no way to get them connected anymore.
When returning -EBUSY the connectors stay functional but DE (enlightenment)
complains about missing crtc and all that is visible is black background and a
cursor that response to mouse/trackpad.
Way to reproduce:
Have xorg running, then for each avtive output call:
xrandr --output $OUTPUT --off
When last output got marked off runtime-suspend kicks in.
Same/similar behavior has been observed on radeon (I don't remember the exact
kernel releases, but older ones got console to display when switching VTs while
newer failed to do so).</pre>
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