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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 - Skylake gen6 suspend/resume video regression 4.9"
href="https://bugs.freedesktop.org/show_bug.cgi?id=98517">98517</a>
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<th>Summary</th>
<td>Skylake gen6 suspend/resume video regression 4.9
</td>
</tr>
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<th>Product</th>
<td>DRI
</td>
</tr>
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<th>Version</th>
<td>XOrg git
</td>
</tr>
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<th>Hardware</th>
<td>Other
</td>
</tr>
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<th>OS</th>
<td>All
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>medium
</td>
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<th>Component</th>
<td>DRM/Intel
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<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
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<th>Reporter</th>
<td>waltercool@slash.cl
</td>
</tr>
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<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
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<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=127644" name="attach_127644" title="Kernel config file">attachment 127644</a> <a href="attachment.cgi?id=127644&action=edit" title="Kernel config file">[details]</a></span>
Kernel config file
Hi there,
Reporting bug as previously discussed at
<a href="https://bugzilla.kernel.org/show_bug.cgi?id=177731">https://bugzilla.kernel.org/show_bug.cgi?id=177731</a>, looks like 4.9 have a
regression of screen suspend/resume issue. Suspending the laptop will "likely"
not turn on the screen back (sometimes does, but is very rare).
I had that problem also at 4.6 or 4.7 (I can't remember properly), but 4.8 was
fine, suspending the device has no major problems. I'm using my same kernel
configuration for both 4.8 and 4.9, and no problem detected there for 4.8 and
failing for 4.9-rc1 4.9-rc2 and 4.9-rc3
I done some testing with pm_test and seems to fail under "device" test, freezer
works fine.
Also, I have a problem since 4.8 with PM screen power saving, tested with both
Ubuntu 16.10 with kernel 4.8 and my Gentoo with kernel 4.8 and 4.9, the problem
in specific is: PM turns off the screen after some minutes, then will never
turn it back.
This second issue is quite different than the suspend regression, but may worth
to mention it. On 4.8 suspension works fine, but PM power saving with turn off
the screen correctly and not turn it on. Works fine deactivating that PM option
on both Gnome or Powerdevil (KDE). With 4.9 everything fails, suspension and PM
screen saving.
Please, any extra test you need from my side, please ask it to me and I can
provide it to you.</pre>
</div>
</p>
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